Piston Kit 80" Stock Big Twin — 80" displacement, 4-1/4" stroke, 3.520" bore

S&S CYCLE Piston Kit 80" Stock Big Twin — 80" displacement, 4-1/4" stroke, 3.520" bore – 79-80 Big Twin, 79-80 Touring

S&S CYCLE
0910-1934
106-5521

Forged pistons for 80" Stock Big Twin; complete kit with rings and wristpins.

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€473.06
€574.40
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Forged piston kit engineered for 80" Stock Big Twin motors for superior strength and durability. 🔧

Includes a complete set of pistons, rings, wristpins, and clips.

Wrist pin deck height: 1.270". Made in the U.S.A. 🇺🇸

Requires connecting rods with a rod length of 7.440" (OEM #24281-74A); earlier 7.470" rods (OEM #24281-41A) can increase compression slightly and may cause clearance issues — check piston-to-head clearances carefully.

: 0910-1934
In Stock

Data sheet

Brand
S&S CYCLE
Bore - Oversize
+0.020"
Bore Size
3,520"
Compression Ratio
9.0:1
Harley Family
Touring
Vintage Big Twin

This product fits the following vehicles. Use the filters below to narrow down the list if needed.

Manufacturer Model Family Year Notes
Harley Davidson Electra Glide Big Twin 1979
Harley Davidson Electra Glide Big Twin 1980
Harley Davidson Electra Glide Sport Touring 1979
Harley Davidson Electra Glide Sport Touring 1980
Harley Davidson Super Glide Big Twin 1979
Harley Davidson Super Glide Big Twin 1979
Harley Davidson Super Glide Big Twin 1980
Harley Davidson Fat Bob Big Twin 1979
Harley Davidson Low Rider Big Twin 1979