ATHENA Piston Kit - 47.45 mm - Yamaha YZ85 S4C04750005A

Piston Kit - 47.45 mm - Yamaha YZ85
High resistance to mechanical and thermal stresses, Made from special high-performance aluminum alloy with high silicon content that guarantee the same reliability of the OE piston, 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