DS Piston Set 3-7/16" + .070" Bore 8.5:1 Compression Ratio

Item: 338172-403856

$116.34

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DS Piston Set 3-7/16" + .070" Bore 8.5:1 Compression Ratio


  • Pistons come complete with wrist pins and circlips (sold in pairs)
  • Piston rings are not included
Specification Details
Bore 3.4375 in.
Compression Ratio 8.5:1
Displacement 74 cu. in.
Engine Type Shovelhead / Panhead
Material Aluminum
Quantity 2
Size Over Standard 0.070 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 1948
  • FL 80 Electra Glide 1980
  • FL Duo Glide 1958-1964
  • FL Hydra Glide 1949-1957
  • FLH Electra Glide 1970-1981
  • FLHB Electra Glide 1966-1969
  • FLHS Electra Glide Sport 1977, 1980
  • FX 1200 Super Glide 1971-1978
  • FXE 1200 Super Glide 1973-1980
  • FXEF Super Glide Fat Bob 1979-1980
  • FXS Super Glide Low Rider 1977-1979

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