Sidewinder® Big Bore Stroker Engine Performance Kit — 3.625" bore, 4.5" stroke, 93" displacement

S&S CYCLE Sidewinder® Big Bore Stroker Engine Performance Kit — 3.625" bore, 4.5" stroke, 93" displacement – 70-84 Big Twin, 80-83 Touring, 82-84 FXR, 84 Police

S&S CYCLE
0904-0005
91-9130

Comprehensive kit with high-tensile Sidewinder cylinders, forged pistons, balanced flywheel, heavy-duty pushrods, gaskets and installation hardware; made in the U.S.A.

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Upgrade your Shovelhead with the Sidewinder® Big Bore Stroker Engine Performance Kit — a comprehensive, high-quality package that delivers durable performance and reliable street power. 🔧🔥

The kit includes high-tensile cast iron Sidewinder cylinders, forged pistons with wrist pins and rings, a dynamically balanced flywheel assembly with heavy-duty connecting rods and mainshafts, stainless steel head bolts, gaskets, adjustable chromoly pushrods, a heavy-duty top motor mount, and the hardware needed for installation.

Designed and manufactured in the U.S.A., this kit is engineered for longevity and straightforward installation on compatible Shovelhead engines. 🛠️🇺🇸

: 0904-0005
In Stock

Data sheet

Type
Engine
Units
Kit
Color/Finish
Black
Style
Big Bore
Brand
S&S CYCLE
Bore Size
3,625"
Displacement
93"
Stroke Length
4-1/2"
Compression Ratio
9.1:1
Harley Family
FXR
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 1970
Harley Davidson Electra Glide Big Twin 1971
Harley Davidson Electra Glide Big Twin 1972
Harley Davidson Electra Glide Big Twin 1973
Harley Davidson Electra Glide Big Twin 1974
Harley Davidson Electra Glide Big Twin 1975
Harley Davidson Electra Glide Big Twin 1976
Harley Davidson Electra Glide Big Twin 1977
Harley Davidson Electra Glide Big Twin 1970
Harley Davidson Electra Glide Big Twin 1971
Harley Davidson Electra Glide Big Twin 1972
Harley Davidson Electra Glide Big Twin 1973
Harley Davidson Electra Glide Big Twin 1974
Harley Davidson Electra Glide Big Twin 1975
Harley Davidson Electra Glide Big Twin 1976
Harley Davidson Electra Glide Big Twin 1977
Harley Davidson Electra Glide Big Twin 1978
Harley Davidson Electra Glide Big Twin 1979
Harley Davidson Electra Glide Big Twin 1980
Harley Davidson Electra Glide Big Twin 1981
Harley Davidson Electra Glide Big Twin 1982
Harley Davidson Electra Glide Big Twin 1983
Harley Davidson Electra Glide Belt Drive Big Twin 1984
Harley Davidson Electra Glide Classic Big Twin 1979
Harley Davidson Electra Glide Big Twin 1980
Harley Davidson Electra Glide Classic Big Twin 1981
Harley Davidson Electra Glide Classic Big Twin 1982
Harley Davidson Electra Glide Classic Big Twin 1983
Harley Davidson Electra Glide Touring 1983
Harley Davidson Tour Glide Touring 1980
Harley Davidson Tour Glide Touring 1981
Harley Davidson Tour Glide Touring 1982
Harley Davidson Tour Glide Touring 1983
Harley Davidson Tour Glide Classic Touring 1980
Harley Davidson Tour Glide Classic Touring 1981
Harley Davidson Tour Glide Classic Touring 1982
Harley Davidson Tour Glide Classic Touring 1983
Harley Davidson Super Glide Big Twin 1971
Harley Davidson Super Glide Big Twin 1972
Harley Davidson Super Glide Big Twin 1973
Harley Davidson Super Glide Big Twin 1974
Harley Davidson Super Glide Big Twin 1975
Harley Davidson Super Glide Big Twin 1976
Harley Davidson Super Glide Big Twin 1977
Harley Davidson Super Glide Big Twin 1978
Harley Davidson Sturgis Big Twin 1980
Harley Davidson Sturgis Big Twin 1981
Harley Davidson Sturgis Big Twin 1982
Harley Davidson Big Twin 1983
Harley Davidson Big Twin 1984
Harley Davidson Super Glide Big Twin 1974
Harley Davidson Super Glide Big Twin 1975
Harley Davidson Super Glide Big Twin 1976
Harley Davidson Super Glide Big Twin 1977
Harley Davidson Super Glide Big Twin 1978
Harley Davidson Super Glide Big Twin 1981
Harley Davidson Super Glide Big Twin 1982
Harley Davidson Super Glide Big Twin 1983
Harley Davidson Super Glide Big Twin 1984
Harley Davidson Fat Bob Big Twin 1979
Harley Davidson Fat Bob Big Twin 1980
Harley Davidson Fat Bob Big Twin 1981
Harley Davidson Fat Bob Big Twin 1982
Harley Davidson Super Glide II FXR 1982
Harley Davidson Super Glide II FXR 1983
Harley Davidson Super Glide II FXR 1984
Harley Davidson Disc Glide Big Twin 1984
Harley Davidson Sport Glide Police Police 1984
Harley Davidson Low Glide FXR 1984
Harley Davidson Super Glide II FXR 1982
Harley Davidson Sport Glide FXR 1984
Harley Davidson Low Rider Big Twin 1977
Harley Davidson Low Rider Big Twin 1978
Harley Davidson Low Rider Big Twin 1979
Harley Davidson Low Rider Big Twin 1980
Harley Davidson Low Rider Big Twin 1981
Harley Davidson Low Rider Big Twin 1982
Harley Davidson Low Rider Big Twin 1983
Harley Davidson Low Rider Big Twin 1984
Harley Davidson Wide Glide Big Twin 1980
Harley Davidson Wide Glide Big Twin 1981
Harley Davidson Wide Glide Big Twin 1982
Harley Davidson Wide Glide Big Twin 1983
Harley Davidson Wide Glide Big Twin 1984