Engines and Components› Pistons and Piston Rings

S&S Cycle

S&S Cycle 36-84 BT 3-7/16in x Up To 4-3/4in Stroke HC Piston Set - .080in

$469.95

SKU: S0GE 106-5781

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Description

Part #: 106-5781

These 3-7/16" +.080" bore, standard compression stroker pistons are part of an S&S stock bore stroker kit for 1936-'84 HD (R) big twins, and are designed to be used in conjunction with S&S (R) stroker flywheels. Flywheels of the following strokes may be used for the following displacements: 4-1/2" stroke - 84" @ 8.4:1 compression, 4-5/8" stroke - 86" @ 9.4:1 compression, 4-3/4" stroke - 88" @10.8:1 compression.

MIA's Description

The S&S Cycle 106-5781 is a forged 3-7/16 inch stroker piston kit, +.080 inch oversized, for 1936-1984 Harley-Davidson Big Twin engines, including 1200cc Knucklehead, Panhead, and Shovelhead, and 1340cc Shovelhead engines. It includes wrist pins, clips, and rings, and features an advanced alloy for durability.

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Specifications

BrandS&S Cycle
Part NumberS0GE 106-5781

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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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