Product SnowmobilePiston Back 09-815-02 Piston Kit For Yamaha 09-815-02 Piston Kit For Yamaha Snowmobile 0.50 Item Number: 09-815-02 (0.50) Description: Piston Kit (Piston + Piston Rings) For Yamaha Snowmobile, oversize 0.50 You May Also Be Interested In 09-679-04 Piston Kit For Arctic Cat 09-815-02 Piston Kit For Yamaha 808660 Complete Gasket Kit For Yamaha 09-710235 Gasket Set For Ski Doo