Category Snowmobile/Ski DooSki Doo - Snowmobile Piston Kits Back Piston Kit 09-769 Snowmobile Parts & Accessories Type: STD 01 (0.25) 02 (0.50) 03 (0.75) 04 (1.00) Viewer:726 Item No: 09-769 Fits: 1979-1977 Ski Doo Futura 400, E You May Also Be Interested In Piston Kit 09-760 Piston Kit 09-784 Oil Seal 3852548 Gasket Plate to Adaptor 911702-WH