3 5/8'' Bore Cylinders with LC Pistons for 1986–'03 XL 1994–'02 Buell® with Super Stock® Heads

3-5/8" bore cylinder and piston kit for modified 1986–'03 Harley-Davidson® Sportster® models or 1994–'02 Buell® models with 89" or 103" Sidewinder® kits and stock style cylinder heads. Forged pistons and S&S cylinders provide consistent performance and reliability. Stock crankcases must be machined to accommodate the larger spigot diameter. Valve pocket recesses in S&S pistons are enlarged for oversize valves and higher lift cams. Combustion chamber modifications must be made to stock cylinder heads to reduce compression. Choose displacement and finish.