Category Snowmobile/Other Back Piston Kit 09-661 STD Snowmobile Parts & Accessories Type: STD 01 (0.25) 02 (0.50) 03 (0.75) 04 (1.00) Viewer:267 Item No: 09-661 STD Fits: Cuyuna 1974-1978 You May Also Be Interested In Piston Kit 09-821-F Piston Ring R09-8039 Gasket 420950850 Gasket - Exhaust Pipe 6M6-14613-00 / 6M6-14613-A0