{"title":"KB Performance","description":null,"products":[{"product_id":"kb-performance-kb660c-std-piston-kit-3-875-standard-10-0-1-cr-103-twin-cam-96-big-bore-to-103-w-se-95-cc-heads","title":"Kb Performance KB660C.STD Piston Kit - 3.875\" Standard - 10.0:1 CR - 103\" Twin Cam | 96\" Big Bore to 103\" w\/SE 95 cc Heads","description":"\u003cp\u003eThis KB Performance replacement piston kit is designed for the specific Harley-Davidson applications listed below. Offset pin design for quiet operation.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOffset pin design for quiet operation.\u003c\/li\u003e\n\u003cli\u003eEach kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings.\u003c\/li\u003e\n\u003cli\u003eReplacement rings and pin locks are also available separately.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kb Performance","offers":[{"title":"Default Title","offer_id":52529359257895,"sku":"0910-3970","price":322.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/2746\/9095\/files\/180A9AD3-A8EC-4285-91D5-D6ED7F419544.png?v=1793834239"},{"product_id":"kb-performance-kb660c-005-piston-kit-3-875-0-005-10-0-1-cr-103-twin-cam-96-big-bore-to-103-w-se-95-cc-heads","title":"Kb Performance KB660C.005 Piston Kit - 3.875\" +0.005\" - 10.0:1 CR - 103\" Twin Cam | 96\" Big Bore to 103\" w\/SE 95 cc Heads","description":"\u003cp\u003eThis KB Performance replacement piston kit is designed for the specific Harley-Davidson applications listed below. Offset pin design for quiet operation.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOffset pin design for quiet operation.\u003c\/li\u003e\n\u003cli\u003eEach kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings.\u003c\/li\u003e\n\u003cli\u003eReplacement rings and pin locks are also available separately.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kb Performance","offers":[{"title":"Default Title","offer_id":52529359356199,"sku":"0910-3971","price":322.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/2746\/9095\/files\/180A9AD3-A8EC-4285-91D5-D6ED7F419544_fe4c9699-b5a8-4624-97dd-dfccbb98ecfd.png?v=1793834242"},{"product_id":"kb-performance-kb661c-std-piston-kit-4-000-standard-10-0-1-cr-96-103-twin-cam-bored-to-110-ci-w-se-95-cc-heads","title":"Kb Performance KB661C.STD Piston Kit - 4.000\" Standard - 10.0:1 CR - 96\"\/103\" Twin Cam Bored to 110 CI w\/SE 95 cc Heads","description":"\u003cp\u003eThis KB Performance replacement piston kit is designed for the specific Harley-Davidson applications listed below. Offset pin design for quiet operation.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOffset pin design for quiet operation.\u003c\/li\u003e\n\u003cli\u003eEach kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings.\u003c\/li\u003e\n\u003cli\u003eReplacement rings and pin locks are also available separately.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kb Performance","offers":[{"title":"Default Title","offer_id":52529359520039,"sku":"0910-3973","price":322.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/2746\/9095\/files\/27773EA3-9DC3-4FD3-91D6-295E263AC601.png?v=1793834246"},{"product_id":"kb-performance-kb661c-005-piston-kit-4-000-0-005-10-0-1-cr-96-103-twin-cam-bored-to-110-ci-w-se-95-cc-heads","title":"Kb Performance KB661C.005 Piston Kit - 4.000\" +0.005\" - 10.0:1 CR - 96\"\/103\" Twin Cam Bored to 110 CI w\/SE 95 cc Heads","description":"\u003cp\u003eThis KB Performance replacement piston kit is designed for the specific Harley-Davidson applications listed below. Offset pin design for quiet operation.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOffset pin design for quiet operation.\u003c\/li\u003e\n\u003cli\u003eEach kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings.\u003c\/li\u003e\n\u003cli\u003eReplacement rings and pin locks are also available separately.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kb Performance","offers":[{"title":"Default Title","offer_id":52529359651111,"sku":"0910-3974","price":322.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/2746\/9095\/files\/180A9AD3-A8EC-4285-91D5-D6ED7F419544_624d79da-8ee1-41c3-97bd-034ebd009769.png?v=1793834250"},{"product_id":"kb-performance-kb661c-010-piston-kit-4-000-0-010-10-0-1-cr-96-103-twin-cam-bored-to-110-ci-w-se-95-cc-heads","title":"Kb Performance KB661C.010 Piston Kit - 4.000\" +0.010\" - 10.0:1 CR - 96\"\/103\" Twin Cam Bored to 110 CI w\/SE 95 cc Heads","description":"\u003cp\u003eThis KB Performance replacement piston kit is designed for the specific Harley-Davidson applications listed below. Offset pin design for quiet operation.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOffset pin design for quiet operation.\u003c\/li\u003e\n\u003cli\u003eEach kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings.\u003c\/li\u003e\n\u003cli\u003eReplacement rings and pin locks are also available separately.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kb Performance","offers":[{"title":"Default Title","offer_id":52529359847719,"sku":"0910-3975","price":322.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/2746\/9095\/files\/0EE99BF2-0DFD-46F9-899B-AB86DEF618BB.png?v=1793834254"},{"product_id":"kb-performance-kb662c-std-piston-kit-4-125-standard-10-0-1-cr-96-103-twin-cam-bored-to-117-ci-w-se-95-cc-heads","title":"Kb Performance KB662C.STD Piston Kit - 4.125\" Standard - 10.0:1 CR - 96\"\/103\" Twin Cam Bored to 117 CI w\/SE 95 cc Heads","description":"\u003cp\u003eThis KB Performance replacement piston kit is designed for the specific Harley-Davidson applications listed below. Offset pin design for quiet operation.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOffset pin design for quiet operation.\u003c\/li\u003e\n\u003cli\u003eEach kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings.\u003c\/li\u003e\n\u003cli\u003eReplacement rings and pin locks are also available separately.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kb Performance","offers":[{"title":"Default Title","offer_id":52529359946023,"sku":"0910-3976","price":322.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/2746\/9095\/files\/CBF6C3B2-4FE6-4437-A02C-A2D862B38125.png?v=1793834258"},{"product_id":"kb-performance-kb920c-005-piston-kit-3-498-0-005-9-5-1-cr-evolution-big-twin-street","title":"Kb Performance KB920C.005 Piston Kit - 3.498\" +0.005\" - 9.5:1 CR - Evolution Big Twin | Street","description":"\u003cp\u003eThis KB Performance replacement piston kit is designed for the specific Harley-Davidson applications listed below. Pistons forged from 4032 aluminum alloy.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePistons forged from 4032 aluminum alloy.\u003c\/li\u003e\n\u003cli\u003eOffset pin design for quiet operation.\u003c\/li\u003e\n\u003cli\u003eNew superior coated skirts.\u003c\/li\u003e\n\u003cli\u003eEach kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kb Performance","offers":[{"title":"Default Title","offer_id":52529360044327,"sku":"0910-5055","price":299.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/2746\/9095\/files\/A7CA622D-8527-42F8-B8D5-3123D4E17D2B.png?v=1793834261"},{"product_id":"kb-performance-kb904c-std-piston-kit-3-875-standard-9-25-1-cr-big-bore-95-twin-cam-street","title":"Kb Performance KB904C.STD Piston Kit - 3.875\" Standard - 9.25:1 CR - Big Bore - 95\" Twin Cam | Street","description":"\u003cp\u003eThis KB Performance replacement piston kit is designed for the specific Harley-Davidson applications listed below. Offset pin design for quiet operation.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOffset pin design for quiet operation.\u003c\/li\u003e\n\u003cli\u003eEach kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings.\u003c\/li\u003e\n\u003cli\u003eReplacement rings and pin locks are also available separately.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kb Performance","offers":[{"title":"Default Title","offer_id":52529362829607,"sku":"0910-0933","price":322.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/2746\/9095\/files\/99E4DC46-0153-46B2-8FA1-312112467155.png?v=1793834319"},{"product_id":"kb-performance-kb906c-std-piston-kit-3-875-standard-10-5-1-cr-big-bore-95-twin-cam-street","title":"Kb Performance KB906C.STD Piston Kit - 3.875\" Standard - 10.5:1 CR - Big Bore - 95\" Twin Cam | Street","description":"\u003cp\u003eThis KB Performance replacement piston kit is designed for the specific Harley-Davidson applications listed below. Offset pin design for quiet operation.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOffset pin design for quiet operation.\u003c\/li\u003e\n\u003cli\u003eEach kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings.\u003c\/li\u003e\n\u003cli\u003eReplacement rings and pin locks are also available separately.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kb Performance","offers":[{"title":"Default Title","offer_id":52529362960679,"sku":"0910-0935","price":322.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/2746\/9095\/files\/77D5CC62-3B5F-41DE-92ED-827050424848.png?v=1793834322"},{"product_id":"kb-performance-kb907c-std-piston-kit-3-875-standard-9-5-1-cr-96-to-103-big-bore-103-twin-cam","title":"Kb Performance KB907C.STD Piston Kit - 3.875\" Standard - 9.5:1 CR - 96\" to 103\" Big Bore |103\" Twin Cam","description":"\u003cp\u003eThis KB Performance replacement piston kit is designed for the specific Harley-Davidson applications listed below. Offset pin design for quiet operation.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOffset pin design for quiet operation.\u003c\/li\u003e\n\u003cli\u003eEach kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings.\u003c\/li\u003e\n\u003cli\u003eReplacement rings and pin locks are also available separately.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kb Performance","offers":[{"title":"Default Title","offer_id":52529363058983,"sku":"0910-0937","price":322.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/2746\/9095\/files\/30DFCCC2-7794-4538-84E6-97FA3DD4712C.png?v=1793834325"},{"product_id":"kb-performance-kb909c-std-piston-kit-3-875-standard-10-5-1-cr-96-to-103-big-bore-103-twin-cam","title":"Kb Performance KB909C.STD Piston Kit - 3.875\" Standard -10.5:1 CR - 96\" to 103\" Big Bore |103\" Twin Cam","description":"\u003cp\u003eThis KB Performance replacement piston kit is designed for the specific Harley-Davidson applications listed below. Offset pin design for quiet operation.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOffset pin design for quiet operation.\u003c\/li\u003e\n\u003cli\u003eEach kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings.\u003c\/li\u003e\n\u003cli\u003eReplacement rings and pin locks are also available separately.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kb Performance","offers":[{"title":"Default Title","offer_id":52529363222823,"sku":"0910-0939","price":322.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/2746\/9095\/files\/4A67A327-A3B9-4A06-A28C-479ED1FD3638.png?v=1793834329"},{"product_id":"kb-performance-kb258-030-piston-kit-3-498-0-030-8-6-1-cr-80-evolution-big-twin-street","title":"Kb Performance KB258.030 Piston Kit - 3.498\" +0.030\" - 8.6:1 CR - 80\" Evolution Big Twin | Street","description":"\u003cp\u003eThis KB Performance replacement piston kit is designed for the specific Harley-Davidson applications listed below. Manufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloy.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eManufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloy.\u003c\/li\u003e\n\u003cli\u003eAllow a tighter fit and longer piston and ring life.\u003c\/li\u003e\n\u003cli\u003eDiamond-machined pistons are held to plus or minus one gram weight and less than one-half-thousandth-inch (.0005\") tolerances from piston to piston.\u003c\/li\u003e\n\u003cli\u003eEach kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings.\u003c\/li\u003e\n\u003cli\u003eReplacement piston rings and pin lock rings available separately.\u003c\/li\u003e\n\u003cli\u003eKB pistons can be installed tighter than other pistons. This results in less piston rock and better ring seal. Please read instructions included with piston for correct piston clearance.\u003c\/li\u003e\n\u003cli\u003eDue to the thermal conductivity and design of KB pistons, special attention is required to the top ring end gap. Please read instructions furnished with piston for correct ring installation.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kb Performance","offers":[{"title":"Default Title","offer_id":52529363353895,"sku":"0910-2017","price":233.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/2746\/9095\/files\/8BA6AA68-122E-4FC2-8B66-2CBF6084EF56.png?v=1793834332"},{"product_id":"kb-performance-kb305-040-piston-kit-3-498-0-040-9-6-1-cr-80-evolution-big-twin-street","title":"Kb Performance KB305.040 Piston Kit - 3.498\" +0.040\" - 9.6:1 CR - 80\" Evolution Big Twin | Street","description":"\u003cp\u003eThis KB Performance replacement piston kit is designed for the specific Harley-Davidson applications listed below. Manufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloy.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eManufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloy.\u003c\/li\u003e\n\u003cli\u003eAllow a tighter fit and longer piston and ring life.\u003c\/li\u003e\n\u003cli\u003eDiamond-machined pistons are held to plus or minus one gram weight and less than one-half-thousandth-inch (.0005\") tolerances from piston to piston.\u003c\/li\u003e\n\u003cli\u003eEach kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings.\u003c\/li\u003e\n\u003cli\u003eReplacement piston rings and pin lock rings available separately.\u003c\/li\u003e\n\u003cli\u003eKB pistons can be installed tighter than other pistons. This results in less piston rock and better ring seal. Please read instructions included with piston for correct piston clearance.\u003c\/li\u003e\n\u003cli\u003eDue to the thermal conductivity and design of KB pistons, special attention is required to the top ring end gap. Please read instructions furnished with piston for correct ring installation.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kb Performance","offers":[{"title":"Default Title","offer_id":52529363484967,"sku":"0910-2019","price":246.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/2746\/9095\/files\/5421B4D6-9AE7-4E13-B695-B53F95BD9E38.png?v=1793834336"},{"product_id":"kb-performance-kb909lca-std-piston-kit-3-875-standard-11-0-1-cr-103-twin-cam-big-bore-96-to-103-w-85-cc-heads","title":"Kb Performance KB909LCA.STD Piston Kit - 3.875\" Standard - 11.0:1 CR - 103\" Twin Cam | Big Bore 96\" to 103\" w\/ 85 cc Heads","description":"\u003cp\u003eThis KB Performance replacement piston kit is designed for the specific Harley-Davidson applications listed below. New skirt coating technology is applied to the entire thickness of the piston-to-wall clearance for a zero install clearance; coating then abrades in on start-up to hone for the perfect fit per cylinder.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eNew skirt coating technology is applied to the entire thickness of the piston-to-wall clearance for a zero install clearance; coating then abrades in on start-up to hone for the perfect fit per cylinder.\u003c\/li\u003e\n\u003cli\u003eHard anodized top ring groove eliminates micro welding of the ring to the groove; this maintains a flat and smooth surface for the best ring seal and top ring groove.\u003c\/li\u003e\n\u003cli\u003eSkirt coating eliminates piston rock for the best possible ring seal with no piston slap noise.\u003c\/li\u003e\n\u003cli\u003eHard anodized crown to aid in heat deflection and to reduce corrosion from alcohol fuels.\u003c\/li\u003e\n\u003cli\u003eIncludes pistons, rings, pins and clips.\u003c\/li\u003e\n\u003cli\u003eMade in the USA.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kb Performance","offers":[{"title":"Default Title","offer_id":52529363648807,"sku":"0910-5044","price":410.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/2746\/9095\/files\/5699CAF6-F051-48CB-BB85-AEC508AA1179.png?v=1793834338"},{"product_id":"kb-performance-kb660lca-std-piston-kit-3-875-standard-10-0-1-cr-103-twin-cam-96-big-bore-to-103-w-se-95-cc-heads","title":"Kb Performance KB660LCA.STD Piston Kit - 3.875\" Standard - 10.0:1 CR - 103\" Twin Cam | 96\" Big Bore to 103\" w\/SE 95 cc Heads","description":"\u003cp\u003eThis KB Performance replacement piston kit is designed for the specific Harley-Davidson applications listed below. New skirt coating technology is applied to the entire thickness of the piston-to-wall clearance for a zero install clearance; coating then abrades in on start-up to hone for the perfect fit per cylinder.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eNew skirt coating technology is applied to the entire thickness of the piston-to-wall clearance for a zero install clearance; coating then abrades in on start-up to hone for the perfect fit per cylinder.\u003c\/li\u003e\n\u003cli\u003eHard anodized top ring groove eliminates micro welding of the ring to the groove; this maintains a flat and smooth surface for the best ring seal and top ring groove.\u003c\/li\u003e\n\u003cli\u003eSkirt coating eliminates piston rock for the best possible ring seal with no piston slap noise.\u003c\/li\u003e\n\u003cli\u003eHard anodized crown to aid in heat deflection and to reduce corrosion from alcohol fuels.\u003c\/li\u003e\n\u003cli\u003eIncludes pistons, rings, pins and clips.\u003c\/li\u003e\n\u003cli\u003eMade in the USA.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kb Performance","offers":[{"title":"Default Title","offer_id":52529363779879,"sku":"0910-5045","price":410.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/2746\/9095\/files\/99BCC985-188D-4BBF-89F6-278B524FDFCC.png?v=1793834342"},{"product_id":"kb-performance-kb661lca-std-piston-kit-4-00-standard-10-0-1-cr-96-103-twin-cam-bored-to-110-ci-w-se-95-cc-heads","title":"Kb Performance KB661LCA.STD Piston Kit - 4.00\" Standard - 10.0:1 CR - 96\"-103\" Twin Cam Bored to 110 ci w\/SE 95 cc Heads","description":"\u003cp\u003eThis KB Performance replacement piston kit is designed for the specific Harley-Davidson applications listed below. New skirt coating technology is applied to the entire thickness of the piston-to-wall clearance for a zero install clearance; coating then abrades in on start-up to hone for the perfect fit per cylinder.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eNew skirt coating technology is applied to the entire thickness of the piston-to-wall clearance for a zero install clearance; coating then abrades in on start-up to hone for the perfect fit per cylinder.\u003c\/li\u003e\n\u003cli\u003eHard anodized top ring groove eliminates micro welding of the ring to the groove; this maintains a flat and smooth surface for the best ring seal and top ring groove.\u003c\/li\u003e\n\u003cli\u003eSkirt coating eliminates piston rock for the best possible ring seal with no piston slap noise.\u003c\/li\u003e\n\u003cli\u003eHard anodized crown to aid in heat deflection and to reduce corrosion from alcohol fuels.\u003c\/li\u003e\n\u003cli\u003eIncludes pistons, rings, pins and clips.\u003c\/li\u003e\n\u003cli\u003eMade in the USA.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kb Performance","offers":[{"title":"Default Title","offer_id":52529364271399,"sku":"0910-5047","price":442.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/2746\/9095\/files\/5AFF5BAC-6253-43CF-9486-2EC7F56A4EDD.png?v=1793834345"},{"product_id":"kb-performance-kb661lca-010-piston-kit-4-00-0-010-10-0-1-cr-96-103-twin-cam-bored-to-110-ci-w-se-95-cc-heads","title":"Kb Performance KB661LCA.010 Piston Kit - 4.00\" +0.010\" - 10.0:1 CR - 96\"-103\" Twin Cam Bored to 110 ci w\/SE 95 cc Heads","description":"\u003cp\u003eThis KB Performance replacement piston kit is designed for the specific Harley-Davidson applications listed below. New skirt coating technology is applied to the entire thickness of the piston-to-wall clearance for a zero install clearance; coating then abrades in on start-up to hone for the perfect fit per cylinder.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eNew skirt coating technology is applied to the entire thickness of the piston-to-wall clearance for a zero install clearance; coating then abrades in on start-up to hone for the perfect fit per cylinder.\u003c\/li\u003e\n\u003cli\u003eHard anodized top ring groove eliminates micro welding of the ring to the groove; this maintains a flat and smooth surface for the best ring seal and top ring groove.\u003c\/li\u003e\n\u003cli\u003eSkirt coating eliminates piston rock for the best possible ring seal with no piston slap noise.\u003c\/li\u003e\n\u003cli\u003eHard anodized crown to aid in heat deflection and to reduce corrosion from alcohol fuels.\u003c\/li\u003e\n\u003cli\u003eIncludes pistons, rings, pins and clips.\u003c\/li\u003e\n\u003cli\u003eMade in the USA.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kb Performance","offers":[{"title":"Default Title","offer_id":52529364402471,"sku":"0910-5048","price":442.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/2746\/9095\/files\/5AFF5BAC-6253-43CF-9486-2EC7F56A4EDD_42583ce4-b5f8-47c9-9464-f54d264bd2c5.png?v=1793834348"},{"product_id":"kb-performance-kb662lca-std-piston-kit-4-125-standard-10-0-1-cr-96-103-twin-cam-bored-to-117-ci-w-se-95-cc-heads","title":"Kb Performance KB662LCA.STD Piston Kit - 4.125\" Standard - 10.0:1 CR - 96\"-103\" Twin Cam Bored to 117 ci w\/SE 95 cc Heads","description":"\u003cp\u003eThis KB Performance replacement piston kit is designed for the specific Harley-Davidson applications listed below. New skirt coating technology is applied to the entire thickness of the piston-to-wall clearance for a zero install clearance; coating then abrades in on start-up to hone for the perfect fit per cylinder.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eNew skirt coating technology is applied to the entire thickness of the piston-to-wall clearance for a zero install clearance; coating then abrades in on start-up to hone for the perfect fit per cylinder.\u003c\/li\u003e\n\u003cli\u003eHard anodized top ring groove eliminates micro welding of the ring to the groove; this maintains a flat and smooth surface for the best ring seal and top ring groove.\u003c\/li\u003e\n\u003cli\u003eSkirt coating eliminates piston rock for the best possible ring seal with no piston slap noise.\u003c\/li\u003e\n\u003cli\u003eHard anodized crown to aid in heat deflection and to reduce corrosion from alcohol fuels.\u003c\/li\u003e\n\u003cli\u003eIncludes pistons, rings, pins and clips.\u003c\/li\u003e\n\u003cli\u003eMade in the USA.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kb Performance","offers":[{"title":"Default Title","offer_id":52529364533543,"sku":"0910-5049","price":410.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/2746\/9095\/files\/1CE44EC2-0F4F-4C90-A283-6740122FB14C.png?v=1793834351"},{"product_id":"kb-performance-kb662lca-010-piston-kit-4-125-0-010-10-0-1-cr-96-103-twin-cam-bored-to-117-ci-w-se-95-cc-heads","title":"Kb Performance KB662LCA.010 Piston Kit - 4.125\" +0.010\" - 10.0:1 CR - 96\"-103\" Twin Cam Bored to 117 ci w\/SE 95 cc Heads","description":"\u003cp\u003eThis KB Performance replacement piston kit is designed for the specific Harley-Davidson applications listed below. New skirt coating technology is applied to the entire thickness of the piston-to-wall clearance for a zero install clearance; coating then abrades in on start-up to hone for the perfect fit per cylinder.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eNew skirt coating technology is applied to the entire thickness of the piston-to-wall clearance for a zero install clearance; coating then abrades in on start-up to hone for the perfect fit per cylinder.\u003c\/li\u003e\n\u003cli\u003eHard anodized top ring groove eliminates micro welding of the ring to the groove; this maintains a flat and smooth surface for the best ring seal and top ring groove.\u003c\/li\u003e\n\u003cli\u003eSkirt coating eliminates piston rock for the best possible ring seal with no piston slap noise.\u003c\/li\u003e\n\u003cli\u003eHard anodized crown to aid in heat deflection and to reduce corrosion from alcohol fuels.\u003c\/li\u003e\n\u003cli\u003eIncludes pistons, rings, pins and clips.\u003c\/li\u003e\n\u003cli\u003eMade in the USA.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kb Performance","offers":[{"title":"Default Title","offer_id":52529364664615,"sku":"0910-5050","price":390.86,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/2746\/9095\/files\/6EDFA440-FDE0-4B99-9174-9AD546866B7F.png?v=1793834354"},{"product_id":"kb-performance-kb920c-010-piston-kit-3-498-0-010-9-5-1-cr-evolution-big-twin-street","title":"Kb Performance KB920C.010 Piston Kit - 3.498\" +0.010\" - 9.5:1 CR - Evolution Big Twin | Street","description":"\u003cp\u003eThis KB Performance replacement piston kit is designed for the specific Harley-Davidson applications listed below. Pistons forged from 4032 aluminum alloy.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePistons forged from 4032 aluminum alloy.\u003c\/li\u003e\n\u003cli\u003eOffset pin design for quiet operation.\u003c\/li\u003e\n\u003cli\u003eNew superior coated skirts.\u003c\/li\u003e\n\u003cli\u003eEach kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kb Performance","offers":[{"title":"Default Title","offer_id":52529364861223,"sku":"0910-5056","price":299.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/2746\/9095\/files\/A7CA622D-8527-42F8-B8D5-3123D4E17D2B_63e47fa4-58b3-4cc8-b292-d1a1d82399e2.png?v=1793834357"},{"product_id":"kb-performance-kb921c-010-piston-kit-3-498-0-010-10-5-1-cr-evolution-big-twin-street","title":"Kb Performance KB921C.010 Piston Kit - 3.498\" +0.010\" - 10.5:1 CR - Evolution Big Twin | Street","description":"\u003cp\u003eThis KB Performance replacement piston kit is designed for the specific Harley-Davidson applications listed below. Pistons forged from 4032 aluminum alloy.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePistons forged from 4032 aluminum alloy.\u003c\/li\u003e\n\u003cli\u003eOffset pin design for quiet operation.\u003c\/li\u003e\n\u003cli\u003eNew superior coated skirts.\u003c\/li\u003e\n\u003cli\u003eEach kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kb Performance","offers":[{"title":"Default Title","offer_id":52529364992295,"sku":"0910-5059","price":299.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/2746\/9095\/files\/A7CA622D-8527-42F8-B8D5-3123D4E17D2B_bba447b7-9ca4-44e0-b501-0ed1cba85538.png?v=1793834360"},{"product_id":"kb-performance-kb542lca-std-piston-kit-4-125-standard-11-0-1-cr-114-117-bored-to-120-m8-street","title":"Kb Performance KB542LCA.STD Piston Kit - 4.125\" Standard - 11.0:1 CR - 114\"\/117\" Bored to 120\" - M8 | Street","description":"\u003cp\u003eThis KB Performance replacement piston kit is designed for the specific Harley-Davidson applications listed below. New skirt coating technology is applied to the entire thickness of the piston-to-wall clearance for a zero install clearance; coating then abrades in on start-up to hone for the perfect fit per cylinder.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eNew skirt coating technology is applied to the entire thickness of the piston-to-wall clearance for a zero install clearance; coating then abrades in on start-up to hone for the perfect fit per cylinder.\u003c\/li\u003e\n\u003cli\u003eHard anodized top ring groove eliminates micro welding of the ring to the groove; this maintains a flat and smooth surface for the best ring seal and top ring groove.\u003c\/li\u003e\n\u003cli\u003eTeflon based skirt coating eliminates piston rock for the best possible ring seal with no piston slap noise.\u003c\/li\u003e\n\u003cli\u003eHard anodized crown to aid in heat deflection and to reduce corrosion from alcohol fuels.\u003c\/li\u003e\n\u003cli\u003eFlat Top 1.2 cc design with oversized valve pockets to accept 1.00 mm larger valves.\u003c\/li\u003e\n\u003cli\u003eIncludes pistons, rings, pins and clips.\u003c\/li\u003e\n\u003cli\u003eMade in the USA.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kb Performance","offers":[{"title":"Default Title","offer_id":52529365188903,"sku":"0910-5724","price":427.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/2746\/9095\/files\/3809E1BF-B62E-46C0-8291-BE1E972F96A7.png?v=1793834364"},{"product_id":"kb-performance-kb542lca-020-piston-kit-4-125-0-020-11-0-1-cr-114-117-bored-to-120-m8-street","title":"Kb Performance KB542LCA.020 Piston Kit - 4.125\" +0.020\" - 11.0:1 CR - 114\"\/117\" Bored to 120\" - M8 | Street","description":"\u003cp\u003eThis KB Performance replacement piston kit is designed for the specific Harley-Davidson applications listed below. New skirt coating technology is applied to the entire thickness of the piston-to-wall clearance for a zero install clearance; coating then abrades in on start-up to hone for the perfect fit per cylinder.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eNew skirt coating technology is applied to the entire thickness of the piston-to-wall clearance for a zero install clearance; coating then abrades in on start-up to hone for the perfect fit per cylinder.\u003c\/li\u003e\n\u003cli\u003eHard anodized top ring groove eliminates micro welding of the ring to the groove; this maintains a flat and smooth surface for the best ring seal and top ring groove.\u003c\/li\u003e\n\u003cli\u003eTeflon based skirt coating eliminates piston rock for the best possible ring seal with no piston slap noise.\u003c\/li\u003e\n\u003cli\u003eHard anodized crown to aid in heat deflection and to reduce corrosion from alcohol fuels.\u003c\/li\u003e\n\u003cli\u003eFlat Top 1.2 cc design with oversized valve pockets to accept 1.00 mm larger valves.\u003c\/li\u003e\n\u003cli\u003eIncludes pistons, rings, pins and clips.\u003c\/li\u003e\n\u003cli\u003eMade in the USA.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kb Performance","offers":[{"title":"Default Title","offer_id":52529365319975,"sku":"0910-5726","price":427.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/2746\/9095\/files\/3D2C721D-E513-4CBF-9D8A-48A8C1CE6AB2.png?v=1793834367"},{"product_id":"kb-performance-kb425c-005-piston-kit-3-750-0-005-8-8-1-cr-88-twin-cam-street","title":"Kb Performance KB425C.005 Piston Kit - 3.750\" +0.005\" - 8.8:1 CR - 88\" Twin Cam | Street","description":"\u003cp\u003eThis KB Performance replacement piston kit is designed for the specific Harley-Davidson applications listed below. Manufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloy.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eManufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloy.\u003c\/li\u003e\n\u003cli\u003eAllows a tighter fit and longer piston and ring life.\u003c\/li\u003e\n\u003cli\u003eDiamond-machined pistons are held to plus or minus one gram weight and less than one-half-thousandth-inch (.0005\") tolerances from piston to piston.\u003c\/li\u003e\n\u003cli\u003eEach kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings.\u003c\/li\u003e\n\u003cli\u003eReplacement piston rings sold separately.\u003c\/li\u003e\n\u003cli\u003eKB pistons can be installed tighter than other pistons. This results in less piston rock and better ring seal. Please read instructions included with piston for correct piston clearance.\u003c\/li\u003e\n\u003cli\u003eDue to the thermal conductivity and design of KB pistons, special attention is required to the top ring end gap. Please read instructions furnished with piston for correct ring installation.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kb Performance","offers":[{"title":"Default Title","offer_id":52529366597927,"sku":"0910-6088","price":287.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/2746\/9095\/files\/4B750B60-8DBB-4F45-933E-2BEEFF8A1070.png?v=1793834370"},{"product_id":"kb-performance-kb425c-010-piston-kit-3-750-0-010-8-8-1-cr-88-twin-cam-street","title":"Kb Performance KB425C.010 Piston Kit - 3.750\" +0.010\" - 8.8:1 CR - 88\" Twin Cam | Street","description":"\u003cp\u003eThis KB Performance replacement piston kit is designed for the specific Harley-Davidson applications listed below. Manufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloy.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eManufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloy.\u003c\/li\u003e\n\u003cli\u003eAllows a tighter fit and longer piston and ring life.\u003c\/li\u003e\n\u003cli\u003eDiamond-machined pistons are held to plus or minus one gram weight and less than one-half-thousandth-inch (.0005\") tolerances from piston to piston.\u003c\/li\u003e\n\u003cli\u003eEach kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings.\u003c\/li\u003e\n\u003cli\u003eReplacement piston rings sold separately.\u003c\/li\u003e\n\u003cli\u003eKB pistons can be installed tighter than other pistons. This results in less piston rock and better ring seal. Please read instructions included with piston for correct piston clearance.\u003c\/li\u003e\n\u003cli\u003eDue to the thermal conductivity and design of KB pistons, special attention is required to the top ring end gap. Please read instructions furnished with piston for correct ring installation.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kb Performance","offers":[{"title":"Default Title","offer_id":52529367023911,"sku":"0910-6089","price":287.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/2746\/9095\/files\/4B750B60-8DBB-4F45-933E-2BEEFF8A1070_94874e68-c16d-4803-8a0b-55dbe7bd01cb.png?v=1793834373"},{"product_id":"kb-performance-kb426c-010-piston-kit-3-750-0-010-10-5-1-cr-88-twin-cam-street","title":"Kb Performance KB426C.010 Piston Kit - 3.750\" +0.010\" - 10.5:1 CR - 88\" Twin Cam | Street","description":"\u003cp\u003eThis KB Performance replacement piston kit is designed for the specific Harley-Davidson applications listed below. Manufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloy.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eManufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloy.\u003c\/li\u003e\n\u003cli\u003eAllows a tighter fit and longer piston and ring life.\u003c\/li\u003e\n\u003cli\u003eDiamond-machined pistons are held to plus or minus one gram weight and less than one-half-thousandth-inch (.0005\") tolerances from piston to piston.\u003c\/li\u003e\n\u003cli\u003eEach kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings.\u003c\/li\u003e\n\u003cli\u003eReplacement piston rings sold separately.\u003c\/li\u003e\n\u003cli\u003eKB pistons can be installed tighter than other pistons. This results in less piston rock and better ring seal. Please read instructions included with piston for correct piston clearance.\u003c\/li\u003e\n\u003cli\u003eDue to the thermal conductivity and design of KB pistons, special attention is required to the top ring end gap. Please read instructions furnished with piston for correct ring installation.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kb Performance","offers":[{"title":"Default Title","offer_id":52529367154983,"sku":"0910-6094","price":295.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/2746\/9095\/files\/75558D12-0D6F-4F67-9261-F7A06695A5F6.png?v=1793834377"},{"product_id":"kb-performance-kb426c-020-piston-kit-3-750-0-020-10-5-1-cr-88-twin-cam-street","title":"Kb Performance KB426C.020 Piston Kit - 3.750\" +0.020\" - 10.5:1 CR - 88\" Twin Cam | Street","description":"\u003cp\u003eThis KB Performance replacement piston kit is designed for the specific Harley-Davidson applications listed below. Manufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloy.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eManufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloy.\u003c\/li\u003e\n\u003cli\u003eAllows a tighter fit and longer piston and ring life.\u003c\/li\u003e\n\u003cli\u003eDiamond-machined pistons are held to plus or minus one gram weight and less than one-half-thousandth-inch (.0005\") tolerances from piston to piston.\u003c\/li\u003e\n\u003cli\u003eEach kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings.\u003c\/li\u003e\n\u003cli\u003eReplacement piston rings sold separately.\u003c\/li\u003e\n\u003cli\u003eKB pistons can be installed tighter than other pistons. This results in less piston rock and better ring seal. Please read instructions included with piston for correct piston clearance.\u003c\/li\u003e\n\u003cli\u003eDue to the thermal conductivity and design of KB pistons, special attention is required to the top ring end gap. Please read instructions furnished with piston for correct ring installation.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kb Performance","offers":[{"title":"Default Title","offer_id":52529367318823,"sku":"0910-6095","price":295.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/2746\/9095\/files\/75558D12-0D6F-4F67-9261-F7A06695A5F6_2a0c4770-4808-46b0-bc34-8804c9318bd7.png?v=1793834380"},{"product_id":"kb-performance-kb576lca-std-piston-kit-4-250-standard-11-4-1-cr-124-big-bore-107-m8-street","title":"Kb Performance KB576LCA.STD Piston Kit - 4.250\" Standard - 11.4:1 CR - 124\" Big Bore - 107\" M8 | Street","description":"\u003cp\u003eThis KB Performance replacement big bore piston kit is designed for the specific Harley-Davidson applications listed below. Valve pockets are designed to accept up to +4.00 mm oversized intake and exhaust valves.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eValve pockets are designed to accept up to +4.00 mm oversized intake and exhaust valves.\u003c\/li\u003e\n\u003cli\u003eType 3 hard-anodized crown offers corrosion resistance for alcohol-added fuels.\u003c\/li\u003e\n\u003cli\u003eType 3 hard-anodized top ring groove eliminates micro-welding of ring to the groove and gives a hard-flat surface for ring to rotate on.\u003c\/li\u003e\n\u003cli\u003eOE-style round wire locks are easily installed.\u003c\/li\u003e\n\u003cli\u003eHeavy-duty wrist pins with true 0.9270” diameter to fit rods correctly.\u003c\/li\u003e\n\u003cli\u003eLine2Line AST skirt coating starts out with a near-zero wall clearance and through the break-in period hones the cylinders to produce the correct oil wedge, keeping the piston square to the cylinder for best ring seal and quiet operation.\u003c\/li\u003e\n\u003cli\u003eKit includes pistons, rings, pins and locks.\u003c\/li\u003e\n\u003cli\u003eRequires 4.250\" bore cylinder sold separately.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kb Performance","offers":[{"title":"Default Title","offer_id":52529367417127,"sku":"0910-6177","price":446.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/2746\/9095\/files\/EB443B26-387B-4FD6-A009-5AA37AD8F9DB.png?v=1793834383"},{"product_id":"kb-performance-kb576lca-005-piston-kit-4-250-0-005-11-4-1-cr-124-big-bore-107-m8-street","title":"Kb Performance KB576LCA.005 Piston Kit - 4.250\" +0.005\" - 11.4:1 CR - 124\" Big Bore - 107\" M8 | Street","description":"\u003cp\u003eThis KB Performance replacement big bore piston kit is designed for the specific Harley-Davidson applications listed below. Valve pockets are designed to accept up to +4.00 mm oversized intake and exhaust valves.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eValve pockets are designed to accept up to +4.00 mm oversized intake and exhaust valves.\u003c\/li\u003e\n\u003cli\u003eType 3 hard-anodized crown offers corrosion resistance for alcohol-added fuels.\u003c\/li\u003e\n\u003cli\u003eType 3 hard-anodized top ring groove eliminates micro-welding of ring to the groove and gives a hard-flat surface for ring to rotate on.\u003c\/li\u003e\n\u003cli\u003eOE-style round wire locks are easily installed.\u003c\/li\u003e\n\u003cli\u003eHeavy-duty wrist pins with true 0.9270” diameter to fit rods correctly.\u003c\/li\u003e\n\u003cli\u003eLine2Line AST skirt coating starts out with a near-zero wall clearance and through the break-in period hones the cylinders to produce the correct oil wedge, keeping the piston square to the cylinder for best ring seal and quiet operation.\u003c\/li\u003e\n\u003cli\u003eKit includes pistons, rings, pins and locks.\u003c\/li\u003e\n\u003cli\u003eRequires 4.250\" bore cylinder sold separately.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kb Performance","offers":[{"title":"Default Title","offer_id":52529367580967,"sku":"0910-6178","price":446.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/2746\/9095\/files\/84A0D605-95CE-4FBB-ABA8-1295E10D2B90.png?v=1793834387"},{"product_id":"kb-performance-kb595lca-std-piston-kit-4-250-standard-11-8-1-cr-124-big-bore-107-m8-street","title":"Kb Performance KB595LCA.STD Piston Kit - 4.250\" Standard - 11.8:1 CR - 124\" Big Bore - 107\" M8 | Street","description":"\u003cp\u003eThis KB Performance replacement big bore piston kit is designed for the specific Harley-Davidson applications listed below. Valve pockets are designed to accept up to +4.00 mm oversized intake and exhaust valves.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eValve pockets are designed to accept up to +4.00 mm oversized intake and exhaust valves.\u003c\/li\u003e\n\u003cli\u003eType 3 hard-anodized crown offers corrosion resistance for alcohol-added fuels.\u003c\/li\u003e\n\u003cli\u003eType 3 hard-anodized top ring groove eliminates micro-welding of ring to the groove and gives a hard-flat surface for ring to rotate on.\u003c\/li\u003e\n\u003cli\u003eOE-style round wire locks are easily installed.\u003c\/li\u003e\n\u003cli\u003eHeavy-duty wrist pins with true 0.9270” diameter to fit rods correctly.\u003c\/li\u003e\n\u003cli\u003eLine2Line AST skirt coating starts out with a near-zero wall clearance and through the break-in period hones the cylinders to produce the correct oil wedge, keeping the piston square to the cylinder for best ring seal and quiet operation.\u003c\/li\u003e\n\u003cli\u003eKit includes pistons, rings, pins and locks.\u003c\/li\u003e\n\u003cli\u003eRequires 4.250\" bore cylinder sold separately.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kb Performance","offers":[{"title":"Default Title","offer_id":52529367744807,"sku":"0910-6403","price":446.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/2746\/9095\/files\/822A7F4B-E6AB-4D25-BEA0-3A67A982B58F.png?v=1793834390"},{"product_id":"kb-performance-kb595lca-005-piston-kit-4-250-0-005-11-8-1-cr-124-big-bore-107-m8-street","title":"Kb Performance KB595LCA.005 Piston Kit - 4.250\" +0.005\" - 11.8:1 CR - 124\" Big Bore - 107\" M8 | Street","description":"\u003cp\u003eThis KB Performance replacement big bore piston kit is designed for the specific Harley-Davidson applications listed below. Valve pockets are designed to accept up to +4.00 mm oversized intake and exhaust valves.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eValve pockets are designed to accept up to +4.00 mm oversized intake and exhaust valves.\u003c\/li\u003e\n\u003cli\u003eType 3 hard-anodized crown offers corrosion resistance for alcohol-added fuels.\u003c\/li\u003e\n\u003cli\u003eType 3 hard-anodized top ring groove eliminates micro-welding of ring to the groove and gives a hard-flat surface for ring to rotate on.\u003c\/li\u003e\n\u003cli\u003eOE-style round wire locks are easily installed.\u003c\/li\u003e\n\u003cli\u003eHeavy-duty wrist pins with true 0.9270” diameter to fit rods correctly.\u003c\/li\u003e\n\u003cli\u003eLine2Line AST skirt coating starts out with a near-zero wall clearance and through the break-in period hones the cylinders to produce the correct oil wedge, keeping the piston square to the cylinder for best ring seal and quiet operation.\u003c\/li\u003e\n\u003cli\u003eKit includes pistons, rings, pins and locks.\u003c\/li\u003e\n\u003cli\u003eRequires 4.250\" bore cylinder sold separately.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kb Performance","offers":[{"title":"Default Title","offer_id":52529367875879,"sku":"0910-6404","price":446.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/2746\/9095\/files\/54518747-EC0E-4AA3-96BB-5AFF45E98716.png?v=1793834393"},{"product_id":"kb-performance-kb596lca-std-piston-kit-4-250-standard-11-7-1-cr-128-big-bore-114-117-m8-street","title":"Kb Performance KB596LCA.STD Piston Kit - 4.250\" Standard - 11.7:1 CR - 128\" Big Bore - 114\"\/117\" M8 | Street","description":"\u003cp\u003eThis KB Performance replacement big bore piston kit is designed for the specific Harley-Davidson applications listed below. Valve pockets are designed to accept up to +4.00 mm oversized intake and exhaust valves.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eValve pockets are designed to accept up to +4.00 mm oversized intake and exhaust valves.\u003c\/li\u003e\n\u003cli\u003eType 3 hard-anodized crown offers corrosion resistance for alcohol-added fuels.\u003c\/li\u003e\n\u003cli\u003eType 3 hard-anodized top ring groove eliminates micro-welding of ring to the groove and gives a hard-flat surface for ring to rotate on.\u003c\/li\u003e\n\u003cli\u003eOE-style round wire locks are easily installed.\u003c\/li\u003e\n\u003cli\u003eHeavy-duty wrist pins with true 0.9270” diameter to fit rods correctly.\u003c\/li\u003e\n\u003cli\u003eLine2Line AST skirt coating starts out with a near-zero wall clearance and through the break-in period hones the cylinders to produce the correct oil wedge, keeping the piston square to the cylinder for best ring seal and quiet operation.\u003c\/li\u003e\n\u003cli\u003eKit includes pistons, rings, pins and locks.\u003c\/li\u003e\n\u003cli\u003eRequires 4.250\" bore cylinder sold separately.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kb Performance","offers":[{"title":"Default Title","offer_id":52529368039719,"sku":"0910-6405","price":446.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/2746\/9095\/files\/BEF84EDB-2C2E-433B-AEE0-28376F872E71.png?v=1793834396"},{"product_id":"kb-performance-kb409c-std-piston-kit-3-875-standard-10-0-1-cr-103-twin-cam-96-twin-cam-big-bore","title":"Kb Performance KB409C.STD Piston Kit - 3.875\" Standard - 10.0:1 CR - 103\" Twin Cam | 96\" Twin Cam Big Bore","description":"\u003cp\u003eThis KB Performance replacement piston kit is designed for the specific Harley-Davidson applications listed below. Manufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloy.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eManufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloy.\u003c\/li\u003e\n\u003cli\u003eAllows a tighter fit and longer piston and ring life.\u003c\/li\u003e\n\u003cli\u003eDiamond-machined pistons are held to plus or minus one gram weight and less than one-half-thousandth-inch (.0005\") tolerances from piston to piston.\u003c\/li\u003e\n\u003cli\u003eEach kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings.\u003c\/li\u003e\n\u003cli\u003eReplacement piston rings sold separately.\u003c\/li\u003e\n\u003cli\u003eKB pistons can be installed tighter than other pistons. This results in less piston rock and better ring seal. Please read instructions included with piston for correct piston clearance.\u003c\/li\u003e\n\u003cli\u003eDue to the thermal conductivity and design of KB pistons, special attention is required to the top ring end gap. Please read instructions furnished with piston for correct ring installation.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kb Performance","offers":[{"title":"Default Title","offer_id":52529368662311,"sku":"0910-0915","price":236.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/2746\/9095\/files\/C5E963C8-A1C7-4B52-B13E-79553D5592B8.png?v=1793834402"},{"product_id":"kb-performance-kb409c-005-piston-kit-3-875-0-005-10-0-1-cr-103-twin-cam-96-twin-cam-big-bore","title":"Kb Performance KB409C.005 Piston Kit - 3.875\" +0.005\" - 10.0:1 CR - 103\" Twin Cam | 96\" Twin Cam Big Bore","description":"\u003cp\u003eThis KB Performance replacement piston kit is designed for the specific Harley-Davidson applications listed below. Manufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloy.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eManufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloy.\u003c\/li\u003e\n\u003cli\u003eAllows a tighter fit and longer piston and ring life.\u003c\/li\u003e\n\u003cli\u003eDiamond-machined pistons are held to plus or minus one gram weight and less than one-half-thousandth-inch (.0005\") tolerances from piston to piston.\u003c\/li\u003e\n\u003cli\u003eEach kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings.\u003c\/li\u003e\n\u003cli\u003eReplacement piston rings sold separately.\u003c\/li\u003e\n\u003cli\u003eKB pistons can be installed tighter than other pistons. This results in less piston rock and better ring seal. Please read instructions included with piston for correct piston clearance.\u003c\/li\u003e\n\u003cli\u003eDue to the thermal conductivity and design of KB pistons, special attention is required to the top ring end gap. Please read instructions furnished with piston for correct ring installation.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kb Performance","offers":[{"title":"Default Title","offer_id":52529368891687,"sku":"0910-0916","price":236.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/2746\/9095\/files\/C5E963C8-A1C7-4B52-B13E-79553D5592B8_28626d52-aaa1-4855-bdaf-d517cee44696.png?v=1793834406"},{"product_id":"kb-performance-kb409c-010-piston-kit-3-875-0-010-10-0-1-cr-103-twin-cam-96-twin-cam-big-bore","title":"Kb Performance KB409C.010 Piston Kit - 3.875\" +0.010\" - 10.0:1 CR - 103\" Twin Cam | 96\" Twin Cam Big Bore","description":"\u003cp\u003eThis KB Performance replacement piston kit is designed for the specific Harley-Davidson applications listed below. Manufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloy.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eManufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloy.\u003c\/li\u003e\n\u003cli\u003eAllows a tighter fit and longer piston and ring life.\u003c\/li\u003e\n\u003cli\u003eDiamond-machined pistons are held to plus or minus one gram weight and less than one-half-thousandth-inch (.0005\") tolerances from piston to piston.\u003c\/li\u003e\n\u003cli\u003eEach kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings.\u003c\/li\u003e\n\u003cli\u003eReplacement piston rings sold separately.\u003c\/li\u003e\n\u003cli\u003eKB pistons can be installed tighter than other pistons. This results in less piston rock and better ring seal. Please read instructions included with piston for correct piston clearance.\u003c\/li\u003e\n\u003cli\u003eDue to the thermal conductivity and design of KB pistons, special attention is required to the top ring end gap. Please read instructions furnished with piston for correct ring installation.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kb Performance","offers":[{"title":"Default Title","offer_id":52529369055527,"sku":"0910-0917","price":236.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/2746\/9095\/files\/E438C573-0119-4677-B90C-2973ECEB1E13.png?v=1793834410"},{"product_id":"kb-performance-kb425c-std-piston-kit-3-750-standard-8-8-1-cr-88-twin-cam-street","title":"Kb Performance KB425C.STD Piston Kit - 3.750\" Standard - 8.8:1 CR - 88\" Twin Cam | Street","description":"\u003cp\u003eThis KB Performance replacement piston kit is designed for the specific Harley-Davidson applications listed below. Manufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloy.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eManufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloy.\u003c\/li\u003e\n\u003cli\u003eAllows a tighter fit and longer piston and ring life.\u003c\/li\u003e\n\u003cli\u003eDiamond-machined pistons are held to plus or minus one gram weight and less than one-half-thousandth-inch (.0005\") tolerances from piston to piston.\u003c\/li\u003e\n\u003cli\u003eEach kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings.\u003c\/li\u003e\n\u003cli\u003eReplacement piston rings sold separately.\u003c\/li\u003e\n\u003cli\u003eKB pistons can be installed tighter than other pistons. This results in less piston rock and better ring seal. Please read instructions included with piston for correct piston clearance.\u003c\/li\u003e\n\u003cli\u003eDue to the thermal conductivity and design of KB pistons, special attention is required to the top ring end gap. Please read instructions furnished with piston for correct ring installation.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kb Performance","offers":[{"title":"Default Title","offer_id":52529370136871,"sku":"0910-6087","price":287.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/2746\/9095\/files\/4B750B60-8DBB-4F45-933E-2BEEFF8A1070_d1ea4f66-debc-4355-a89d-e85af6e1e99e.png?v=1793834437"},{"product_id":"kb-performance-kb425c-020-piston-kit-3-750-0-020-8-8-1-cr-88-twin-cam-street","title":"Kb Performance KB425C.020 Piston Kit - 3.750\" +0.020\" - 8.8:1 CR - 88\" Twin Cam | Street","description":"\u003cp\u003eThis KB Performance replacement piston kit is designed for the specific Harley-Davidson applications listed below. Manufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloy.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eManufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloy.\u003c\/li\u003e\n\u003cli\u003eAllows a tighter fit and longer piston and ring life.\u003c\/li\u003e\n\u003cli\u003eDiamond-machined pistons are held to plus or minus one gram weight and less than one-half-thousandth-inch (.0005\") tolerances from piston to piston.\u003c\/li\u003e\n\u003cli\u003eEach kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings.\u003c\/li\u003e\n\u003cli\u003eReplacement piston rings sold separately.\u003c\/li\u003e\n\u003cli\u003eKB pistons can be installed tighter than other pistons. This results in less piston rock and better ring seal. Please read instructions included with piston for correct piston clearance.\u003c\/li\u003e\n\u003cli\u003eDue to the thermal conductivity and design of KB pistons, special attention is required to the top ring end gap. Please read instructions furnished with piston for correct ring installation.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kb Performance","offers":[{"title":"Default Title","offer_id":52529370300711,"sku":"0910-6090","price":287.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/2746\/9095\/files\/4B750B60-8DBB-4F45-933E-2BEEFF8A1070_ab175a1e-ce00-4895-82e6-6d808ea6c171.png?v=1793834440"},{"product_id":"kb-performance-kb425c-030-piston-kit-3-750-0-030-8-8-1-cr-88-twin-cam-street","title":"Kb Performance KB425C.030 Piston Kit - 3.750\" +0.030\" - 8.8:1 CR - 88\" Twin Cam | Street","description":"\u003cp\u003eThis KB Performance replacement piston kit is designed for the specific Harley-Davidson applications listed below. Manufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloy.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eManufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloy.\u003c\/li\u003e\n\u003cli\u003eAllows a tighter fit and longer piston and ring life.\u003c\/li\u003e\n\u003cli\u003eDiamond-machined pistons are held to plus or minus one gram weight and less than one-half-thousandth-inch (.0005\") tolerances from piston to piston.\u003c\/li\u003e\n\u003cli\u003eEach kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings.\u003c\/li\u003e\n\u003cli\u003eReplacement piston rings sold separately.\u003c\/li\u003e\n\u003cli\u003eKB pistons can be installed tighter than other pistons. This results in less piston rock and better ring seal. Please read instructions included with piston for correct piston clearance.\u003c\/li\u003e\n\u003cli\u003eDue to the thermal conductivity and design of KB pistons, special attention is required to the top ring end gap. Please read instructions furnished with piston for correct ring installation.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kb Performance","offers":[{"title":"Default Title","offer_id":52529370464551,"sku":"0910-6091","price":287.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/2746\/9095\/files\/4B750B60-8DBB-4F45-933E-2BEEFF8A1070_8a8e3e3f-ec7f-46d5-89e5-5c44b7b7464f.png?v=1793834443"},{"product_id":"kb-performance-kb426c-std-piston-kit-3-750-standard-10-5-1-cr-88-twin-cam-street","title":"Kb Performance KB426C.STD Piston Kit - 3.750\" Standard - 10.5:1 CR - 88\" Twin Cam | Street","description":"\u003cp\u003eThis KB Performance replacement piston kit is designed for the specific Harley-Davidson applications listed below. Manufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloy.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eManufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloy.\u003c\/li\u003e\n\u003cli\u003eAllows a tighter fit and longer piston and ring life.\u003c\/li\u003e\n\u003cli\u003eDiamond-machined pistons are held to plus or minus one gram weight and less than one-half-thousandth-inch (.0005\") tolerances from piston to piston.\u003c\/li\u003e\n\u003cli\u003eEach kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings.\u003c\/li\u003e\n\u003cli\u003eReplacement piston rings sold separately.\u003c\/li\u003e\n\u003cli\u003eKB pistons can be installed tighter than other pistons. This results in less piston rock and better ring seal. Please read instructions included with piston for correct piston clearance.\u003c\/li\u003e\n\u003cli\u003eDue to the thermal conductivity and design of KB pistons, special attention is required to the top ring end gap. Please read instructions furnished with piston for correct ring installation.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kb Performance","offers":[{"title":"Default Title","offer_id":52529370595623,"sku":"0910-6092","price":295.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/2746\/9095\/files\/75558D12-0D6F-4F67-9261-F7A06695A5F6_fd9d685a-c848-4a17-bf93-37353155e1b7.png?v=1793834446"}],"url":"https:\/\/www.cyclecityoutdoors.com\/collections\/kb-performance.oembed","provider":"Cycle City Outdoors","version":"1.0","type":"link"}