x X X X X 770 RING BUYERS GUIDE All Pistons manufactured by Wiseco after May 1, 1992 have the Piston Part Number, Replacement Ring Type and Overbore Size (in millimeters) stamped on the dome of the piston. * CSM and CDM rings are designed to be used in chrome bores Type List Bore Range Top Ring Second Ring Oil Ring 4-STROKE RINGS XA 2913XA $49.95 60-74.5mm (2.362-2.933”) 0.8mm (.031”) Alloy steel, ferrox coated, chrome faced 0.8mm (.031”) Cast iron, phosphate coated, taper faced 1.5mm (.059”) 3 piece oil assembly: Stainless steel flex-vent spacer, chrome faced rails Type Thickness Bore Range Description 2 STROKE RINGS CS 1mm (.039”) 39-74mm (1.535-2.913”) Alloy steel, ferrox coated, chrome faced, internally notched CST 1mm (.039”) 54mm (2.126”) Alloy steel, ferrox coated, chrome plated, internally notched CD 1mm (.039”) 1mm (.039”) 39-74mm (1.535-2.913”) Alloy steel, ferrox coated, chrome plated, internally notched *CDM 1mm (.039”) 1mm (.039”) 39-73mm (1.535-2.874”) *(for use in chrome bores) Nodular iron, phospate coated, internally notched (for use in Chrome Bores) TC 1.2mm (.047”) 74.25-91mm (2.923-3.583”) Alloy steel, ferrox coated, chrome plated, internally notched TD 1.2mm (.047”) 1.2mm (.047”) 74.25-91mm (2.923-3.583”) Alloy steel, ferrox coated, chrome plated, internally notched TDW 1.2mm (.047”) 1.2mm (.047”) 74.8-81mm (2.945-3.189”) (for 2.04mm knock pin) Alloy steel, ferrox coated, chrome plated, internally notched LK 2.0mm (.079”) 67.5 - 84mm (2.658 - 3.307) LK ring package contains 1 LT ring and 1 flat ring. The flat ring will be a CS style for bore sizes up to 74mm; TC style for 74.25mm bores and larger KA 1.5mm (.059”) 55.57-98mm (2.188-3.858”) Alloy steel, ferrox coated, chrome faced, side notched, half-keystone KD 1.5mm (.059”) 1.5mm (.059”) 55.57-98mm (2.188-3.858”) Alloy steel, ferrox coated, chrome faced, side notched, half-keystone KE 1.2mm (.047”) 1.2mm (.047”) 65-66.5mm (2.559-2.618”) Alloy steel, ferrox coated, chrome faced, back notched, half keystone KF 1.2mm (.047”) 1.2mm (.047”) 65-66.5mm (2.559-2.618”) Alloy steel, ferrox coated, chrome faced, internally notched, half keystone SNOW BIKE SURVIVAL SNOWMOBILE ACCESSORIES HANDLEBARS / CONTROLS CABLES WINDSHIELDS BODY SKIS /RUNNERS FRONT SUSPENSION REAR SUSPENSION SHOCKS TRACKS/STUDS SPROCKETS ELECTRICAL EXHAUST ENGINE AIR / FUEL CLUTCHING BELTS BRAKES CHAIN / SPROCKETS LUBRICANTS / CHEMICALS TOOLS / HARDWARE TRANSPORT / RAMPS INDEX ENGINE
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