S&S Cycle 3-5/8 Inch Big Bore Cylinder and Piston Kit for 1966-1984 Harley-Davidson Shovelhead

S&S Cycle 3-5/8 Inch Big Bore Cylinder and Piston Kit for 1966-1984 Harley-Davidson Shovelhead

The S&S 3-5/8 inch big bore kit takes a 1966-1984 Shovelhead to 88 cubic inches with forged pistons and high tensile cast iron cylinders that are built to handle the pressures of a performance Shovelhead build. The included stainless steel head bolts and complete gasket set make this a proper all-in-one top-end solution rather than a parts puzzle you have to assemble from multiple suppliers.

Key Features

• 3-5/8 inch bore high tensile cast iron cylinders for 88 cubic inch displacement
• Forged pistons with rings and wristpins for durability under high-compression operation
• Stainless steel head bolts with washers included
• Complete gasket set: head gaskets, base gaskets included
• Made in the USA by S&S Cycle

Technical Specifications

• Bore: 3-5/8 inches
• Displacement: 88 cubic inches (with 4.25 inch stroke)
• Piston Type: Forged with rings and wristpins
• Cylinder Material: High tensile cast iron
• Head Bolts: Stainless steel with washers
• Included: Cylinders, forged pistons with rings and wristpins, head gaskets, stainless steel head bolts, base nuts, base gaskets
• Fitment: 1966-1984 Harley-Davidson Shovelhead engines
• Origin: Made in USA

Fitment Notes

• Fits 1966-1984 Harley-Davidson models with Shovelhead engines
• Stock cases and heads must be bored to accept 3-5/8 inch cylinders
• Stock flywheels must be rebalanced
• An S&S manifold must be purchased separately due to increased cylinder length
• Review the Fitment tab for the complete year and model breakdown