Engines and Components› Engines, Blocks and Components

S&S Cycle

S&S Cycle 66-84 BT 80in 3-1/2in Bore Cylinder and Standard Compression Piston Kit

$1,995.95

SKU: S0GE 91-9024

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INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

Part #: 91-9024

This kit is intended to replace the cylinders and pistons of a 80" shovelhead engine and maintain the stock compression ratio of 8:1. Compatible with stock or S&S cylinder heads. Kit includes S&S 3-1/2" bore high tensile cast iron cylinders, 3-1/2" bore forged standard compression pistons for 80" (4-1/4" stroke) engines with rings and wristpins, head gaskets, S&S stainless steel head bolts with washers, base nuts, base gaskets.

MIA's Description

This kit replaces cylinders and pistons for 1979-1984 80" Harley-Davidson Shovelhead Big Twin engines. It maintains the stock 8:1 compression ratio and includes S&S 3-1/2" bore high tensile cast iron cylinders, 3-1/2" bore forged standard compression pistons with rings and wristpins, head gaskets, S&S stainless steel head bolts with washers, base nuts, and base gaskets. Made in the U.S.A.

Fitment

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Specifications

BrandS&S Cycle
Part NumberS0GE 91-9024

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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