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Forged Stock Bore Stroker Pistons - 106-5781

  • Part #:
    133909
  • Mfg Part #:
    106-5781
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Forged Stock Bore Stroker Pistons - 106-5781

  • Part #:
    133909
  • Mfg Part #:
    106-5781
MSRP: $388.95

Price: $350.06 10% off!
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S&S Cycle Forged Stock Bore Stroker Pistons - 106-5781

These 3 7/16 in. +.080" bore, standard compression stroker pistons are part of an S&S stock bore stroker kit for 1936-1984 HD® big twins, and are designed to be used in conjunction with S&S® stroker flywheels. Flywheels of the following strokes may be used for the following displacements:

4 1/2" Stroke - 84"@ 8.4:1 Compression

4 5/8" Stroke - 86" @ 9.1:1 Compression 

4 38/4" Stroke - 88" @ 10.8:1 Compression 

These pistons are normally used in stock HD® cylinders, and must be purchased separately, based on the required piston oversize. The modern alloys used in these pistons, coupled with the advanced skirt profiles, allow them to be fit tighter resulting in low engine noise and long engine life. In the past this could only be achieved with weaker cast pistons. 

Cylinders are available from S&S® offers machine shop services through the S&S® Service and Speed Center. New pistons can be fit to your existing cylinders for a reasonable charge

to be used with part number 14-9064



Included Items:

(2) Pistons

(4) Cir clips

(2) Wrist pins

(2) Top rings

(2) Second rings

(2) Spacer rings

(4) Oil rings

Instructions



The Air Resources Board (ARB) does not permit the use of aftermarket emission-related parts that alter the air/fuel ratio of an emission-controlled vehicle. Due to these legal restrictions this part cannot be shipped to California.

Specifications
Part #: 133909
Mfg #: 106-5781
Bore Size 3 7/16 in.
Compression Ratio 9:1
Type Piston Kit
Units Pair
Weight 3.05 lbs
Fitment for S&S Cycle Forged Stock Bore Stroker Pistons - 106-5781

Part 133909 fits the following machines

Harley-Davidson
  • Disc Glide - FXDG 1983
  • Disc Glide - FXRDG 1984
  • Duo Glide - FL 1958-1964
  • E 1936-1951
  • EL 1936-1951
  • Electra Glide - FLH 1965-1979, 1981-1984
  • Electra Glide - FLH 1200 1979-1980
  • Electra Glide - FLH-80 1979-1980
  • Electra Glide - FLHS 1977, 1980-1981
  • Electra Glide - FLHT 1983-1984
  • Electra Glide Classic - FLHC 1979-1981
  • Electra Glide Classic - FLHTC 1983-1984
  • Electra Glide Classic - FLHTC (Early Model) 1984
  • Electra Glide Classic - FLHTC (Late Model) 1984
  • Electra Glide Heritage - FLH 1981
  • Electra Glide Special - FLHX 1984
  • Electra Glide Sport - FLHS 1982-1984
  • Electra Glide Super Sport - FLHFB 1965
  • ES 1936-1951
  • F 1941-1954
  • Fat Bob - FXEF 1980-1981
  • Fat Bob - FXEF 1200 1979
  • Fat Bob - FXEF-80 1979
  • FL 1941-1979, 1981
  • FLH 1955-1965
  • FS 1941-1970
  • Hydra Glide - FL 1949-1957
  • Low Glide - FXRS 1984
  • Low Rider - FXS 1977-1978, 1981-1982
  • Low Rider - FXS 1200 1979-1980
  • Low Rider - FXS-80 1979-1980
  • Low Rider - FXSB 1983-1984
  • Sport Glide - FXRT 1983
  • Sport Glide - FXRT (Early Model) 1984
  • Sport Glide - FXRT (Late Model) 1984
  • Sturgis - FXB 1980-1982
  • Super Glide - FX 1971-1978
  • Super Glide - FXE 1974-1984
  • Super Glide - FXR 1984
  • Super Glide II - FXR 1982-1983
  • Super Glide II - FXRS 1982-1983
  • Tour Glide - FLT 1979-1983
  • Tour Glide Classic - FLTC 1982-1983
  • Tour Glide Classic - FLTC (Early Model) 1984
  • Tour Glide Classic - FLTC (Late Model) 1984
  • U 1937-1948
  • UH 1938-1941
  • UHS 1937-1940
  • UL 1937-1948
  • ULH 1938-1941
  • US 1938-1940, 1945-1948
  • Wide Glide - FXWG 1980-1984

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