This Athena replacement b piston kit is designed for the specific Yamaha applications listed below. High resistance to mechanical and thermal stresses.

Key Features

• High resistance to mechanical and thermal stresses.
• Has been tested on engine dynamometer benches under progressive stress load, and thereafter on track to validate it performance even in the most extreme conditions.
• Equipped with piston rings that guarantee less friction with the OE cylinder producing a higher performance.
• Made by reverse extrusion.
• For OE cylinder.