Snowmobile/Ski DooSki Doo - Snowmobile Piston Kits Back Piston Ring R09-765 Snowmobile Parts & Accessories Type: STD 01 (0.25) 02 (0.50) 03 (0.75) 04 (1.00) Viewer:237 Item No: R09-765 Fits: Ski-Doo TNT 340 1977 You May Also Be Interested In Piston Kit 09-762 Piston Kit 09-776 O-Ring 0313446 SCREW (.375-16 x 1.00) 10-98794