Snowmobile/Ski DooSki Doo - Snowmobile Piston Kits Back Piston Kit 09-766 Snowmobile Parts & Accessories Type: STD 01 (0.25) 02 (0.50) 03 (0.75) 04 (1.00) Viewer:795 Item No: 09-766 CC: 440 Bore Size: 67.5mm Cyl: 2 Fits: 1972 Ski-Doo Blizzard 438 1977, 1975-1974 Ski-Doo TNT 440 F/A You May Also Be Interested In Piston Kit 09-753 Piston Ring R09-774 Piston Ring R09-767 Top End Gasket Kit For VG-6155-M