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:143 Item No: R09-661 Fits on Piston Kit 09-661 Fits: 1974-1978 Cuyuna You May Also Be Interested In Piston Ring R09-662 Piston Kit 09-662 STD Oil Seal 93102-32M07-00 Piston Ring R66V-11631-00