Top End Kit — Bore 3-7/16", Compression 8.0:1, 74 cu in

S&S CYCLE Top End Kit — Bore 3-7/16", Compression 8.0:1, 74 cu in – 66-78 Big Twin

S&S CYCLE
0903-1269
90-0097
Complete S&S top-end rebuild kit with Shovelhead-style heads, stock-bore cylinders, forged pistons, gaskets and hardware. Pistons pre-fit to minimize machine work.
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Upgrade your engine's top end with the S&S Top End Kit — a complete package that streamlines cylinder and head replacement. 🔧

The kit includes:

  • S&S Shovelhead-style cylinder heads (O-ring style)
  • A pair of S&S stock-bore cylinders sized for your engine
  • Forged pistons complete with rings and wrist pins
  • Manifold clamps and manifold seals
  • All required gaskets and hardware

Pistons are pre-fit to the cylinders to minimize machine work and reduce downtime. Made in the USA. 🇺🇸

: 0903-1269
In Stock

Data sheet

Units
Kit
Brand
S&S CYCLE
Bore Size
3,4375"
Displacement
74"
Stroke Length
3-31/32"
Compression Ratio
8.0:1
Harley Family
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 1966
Harley Davidson Electra Glide Big Twin 1967
Harley Davidson Electra Glide Big Twin 1968
Harley Davidson Electra Glide Big Twin 1969
Harley Davidson Electra Glide Big Twin 1966
Harley Davidson Electra Glide Big Twin 1967
Harley Davidson Electra Glide Big Twin 1968
Harley Davidson Electra Glide Big Twin 1969
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 1966
Harley Davidson Electra Glide Big Twin 1967
Harley Davidson Electra Glide Big Twin 1968
Harley Davidson Electra Glide Big Twin 1969
Harley Davidson Electra Glide Big Twin 1966
Harley Davidson Electra Glide Big Twin 1967
Harley Davidson Electra Glide Big Twin 1968
Harley Davidson Electra Glide Big Twin 1969
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 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 Low Rider Big Twin 1977
Harley Davidson Low Rider Big Twin 1978