This Athena replacement cylinder kit is designed for the specific Yamaha applications listed below. Aluminum cylinder is nickel carbide coated designed with larger water jackets.

Key Features

• Aluminum cylinder is nickel carbide coated designed with larger water jackets.
• Specially designed, high performance, hard anodized power valves (cannot use OEM).
• There is an aluminum cylinder head with a removable bronze dome allowing for a higher compression ratio and anti-detonation features (except where noted).
• Kit also includes a Cast-Lite flat top piston kit, and an Athena top-end gasket set that includes required seals and hardware.
• Bolt on; no matching required except where noted.