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S&S 3-5/8" Piston Set

Item: 327352

$359.96

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S&S 3-5/8" Piston Set


This forged 3-5/8" bore stroker piston replaces several cast and forged big bore pistons that S&S previously offered. Applications for this piston include 88" (4-1/4" stroke), 93" (4-1/2" stroke), and 96" (4-5/8" stroke) engines with stock 8-1/2" diameter flywheels, and 98" (4-3/4" stroke) and 103" (5" stroke) engines with 8-1/4" small diameter flywheels. As with the stock bore stroker piston, the modern metallurgy and advanced skirt profiles allow a relatively close piston fit for low engine noise and long engine life.

Displacement: 88"

  • Stroke: 4-1/4"
  • Flywheel Diameter: 8-1/2"
  • Compression Ratio: 8.5:1
  • Cylinder Length (SH and P series engines): 5.330"

Displacement: 93"

  • Stroke: 4-1/2"
  • Flywheel Diameter: 8-1/2"
  • Compression Ratio: 8.5:1
  • Cylinder Length (SH and P series engines): 5.405"
  • Cylinder Length (KN series engines): 5.625"

Displacement: 93 (High Compression)

  • Stroke: 4-1/2"
  • Flywheel Diameter: 8-1/2"
  • Compression Ratio: 9.1:1
  • Cylinder Length (SH and P series engines): 5.363"

Displacement: 96"

  • Stroke: 4-5/8"
  • Flywheel Diameter: 8-1/2"
  • Compression Ratio: 9.1:1
  • Cylinder Length (SH and P series engines): 5.440"

Displacement: 98"

  • Stroke: 4-3/4"
  • Flywheel Diameter: 8-1/4"
  • Compression Ratio: 8.9:1
  • Cylinder Length (SH and P series engines): 5.530"

Displacement: 103"

  • Stroke: 5"
  • Flywheel Diameter: 8-1/4"
  • Compression Ratio: 9.7:1
  • Cylinder Length (SH and P series engines): 5.630"

Product Note: Only for models with OVH (Overhead Valve) engines.

Specification Details
Bore 3-5/8 in.
Country of Origin USA
Piston Type Forged
Size Over Standard 0.060 in. Larger than Stock

Vehicle Fitment


Fitment is guaranteed or your money back plus free return shipping.
Don’t waste time installing a product that doesn't fit. We worked hard ensuring that this product is an exact fit on the vehicles listed below.

Harley Davidson
  • FL 80 Electra Glide 1980
  • FLB Electra Glide 1966-1969
  • FLFB Electra Glide 1966-1969
  • FLH 80 Electra Glide Heritage 1981-1983
  • FLH Electra Glide 1970-1983
  • FLHB Electra Glide 1966-1969
  • FLHC Electra Glide Classic 1979-1982
  • FLHF Electra Glide 1970-1972, 1974
  • FLHF Electra Glide Sport 1975
  • FLHFB Electra Glide Super Sport 1966-1969
  • FLHS Electra Glide Sport 1977, 1980-1983
  • FLHT Electra Glide 1982-1983
  • FLHTC Electra Glide Classic 1983
  • FLP Electra Glide 1970-1971
  • FLPF Electra Glide 1970-1972
  • FLT Tour Glide 1979-1983
  • FLTC Tour Glide Classic 1980-1983
  • FLTD Tour Glide 1983
  • FX 1200 Super Glide 1971-1978
  • FXB Sturgis 1980-1982
  • FXDG Disc Glide 1983
  • FXE 1200 Super Glide 1973-1980
  • FXE Super Glide 1981-1983
  • FXEF Super Glide Fat Bob 1979-1981
  • FXS Super Glide Low Rider 1977-1979, 1981-1982
  • FXSB Low Rider 1983
  • FXWG Wide Glide 1980-1983

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