Category Snowmobile/YamahaYamaha - Snowmobile Piston Kits Back Piston Ring R09-818 Snowmobile Parts & Accessories Type: STD 01 (0.25) 02 (0.50) 03 (0.75) 04 (1.00) Viewer:153 Item No: R09-818 Fits with Piston 09-818 Fits: 1978 Yamaha SRX440B 1979 Yamaha SRX440C 1980 Yamaha SRX440D You May Also Be Interested In Piston Ring R09-808 Piston Ring R09-813 O-Ring 81340 / 313754 Top End Gasket Kit PWTK-00640-TG