This Athena replacement top end piston kit is designed for the specific Yamaha applications listed below. Made of high-performance aluminum alloy with high silicon content that guarantee the same reliability of the OE piston, while at the same time providing greater resistance and excellent performance.

Key Features

• Made of high-performance aluminum alloy with high silicon content that guarantee the same reliability of the OE piston, while at the same time providing greater resistance and excellent performance.
• The smooth profile ensures a regular flow and the perfect flame propagation.
• The piston for 4-stroke Off-Road motorcycles are made by reverse extrusion and produced numerical control (CNC) machines.
• Piston rings create less friction with the cylinder and therefore a higher performance. The segments included, Made in Japan, have a wear-resistant coatings (PVD or chromium nitride) to increase the retain and the durability.