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:334 Item No: R09-661 Fits on Piston Kit 09-661 Fits: 1974-1978 Cuyuna You May Also Be Interested In Bearing 09-504-1 Piston Kit 09-821-F Top End Gasket Kit For ATPO-44040003-TP Washer 92990-06600-00