Category Snowmobile/Other Back Piston Ring R09-661 Snowmobile Parts & Accessories Type: STD 01 (0.25) 02 (0.50) 03 (0.75) 04 (1.00) Viewer:155 Item No: R09-661 Fits on Piston Kit 09-661 Fits: 1974-1978 Cuyuna You May Also Be Interested In Piston Kit 09-8040 STD (Left Side) Piston Ring R09-8038 Piston Ring R09-818 Gasket - Exhaust Pipe 66E-14623-00