S&S 3-5/8" Big Bore Cylinder and Piston Kit for Harley-Davidson

The S&S 3-5/8" Big Bore Cylinder and Piston Kit gives you a precise, durable fit for a strong, healthy top end. It is made from cast.

Fits Harley-Davidson models from 1966-1984. Check the fitment chart below to confirm your exact year and model.

• Cylinder and piston kit can be used to build an 88" engine, or to replace the cylinders and piston in an engine with an existing S&S stock bore stroker kit
• Includes 3-5/8" bore high tensile cast iron cylinders, forged pistons with rings and wristpins, head gaskets, stainless steel head bolts with washers, base nuts and base gaskets
• 88", 7.5:1 compression
• Can be used in engines with 4-1/4" flywheels
• Made in the U.S.A.
• Crankcases must be bored to accept the larger 3-5/8" cylinders and stock flywheel assembly should be rebalanced.