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Part Number:
SRP-140688

SRP Pistons 140688 Forged Windsor 302 Stroker Combo Flat Top 4.020 Bore

SRP Pistons, SBF 345/ 433, Bore 4.020, Stroke 3.400/ 4.250, Rod Length 5.400/ 6.250, Flat Top -5.0cc, 418 Grams, Set of 8

Special Price $661.49 Regular Price $734.99
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⚠ PROP 65 WARNING
⚠ WARNING: This product can expose you to chemicals, which are known to the State of California to cause cancer. Please contact us to obtain a list of harmful chemicals. For more information, go to www.P65Warnings.ca.gov.
SRP Professional pistons are the most advanced lightweight FSR forging that offers superior strength. SRP pistons are up to 20% lighter than traditional equivalent pistons. High-silicon 4032 aluminum alloy for reduced piston-to-wall clearance and quiet operation. Accumulator grooves for improved ring seal. Designed for normally aspirated or moderate forced induction nitrous engine applications. SRP professional pistons come standard with high-performance skirt coating and low drag performance piston rings.

  • Fits Ford, TFS, GT40, Canfield, Brodix, Track I, OE & Dart Windsor.
  • Does not fit Twisted Wedge, N351 or Edelbrock 7721.
  • CNC machined ring grooves accept 1/16, 1/16, 3/16 rings (Sold separately)
  • Includes wrist pin

    Compression Ratio:
  • 58cc 10.8:1/ 13.3:1
  • 64cc 10.1:1/ 12.3:1
  • 70cc 9.4:1/ 11.5:1
    Note: *Oil rail supports included.*
  • More Information
    CNC Part Number SRP-140688
    Price $734.99
    Manufacturer's Part Number 140688
    Brands SRP
    Part Types Engine Piston
    Departments Parts
    Vehicle Make Ford SB
    Bore Size 4.020
    Crankshaft Stroke 3.400, 4.250
    Rod Length 5.400, 6.250
    Piston Type Flat Top
    Compression Height 1.100
    Piston Material 4032 Forged
    Piston Ring Size 1/16 1/16 3/16
    Wrist Pin Size 0.927
    Custom Notices ⚠ PROP 65 WARNING

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