inc. GST

SKU: SRP231591

BRAND: SRP Pistons

Forged 4.125" Flat Top Piston Set, -5cc, 4.000" Stroke, 6.250" Rod

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JE Pistons SRP line is proud to offer huge performance for the price. Forged from strong, 4032 aluminium alloy material, SRP pistons blend strength with affordability, offering an excellent performance bargain for performance rebuild and street/strip applications. (some applications in 2618)


  • Fits Ford, TFS, GT40, Canfield, Brodix Track I, OE & Dart Windsor.
  • Does not fit Twisted Wedge®, N351 or Edlebrock 7721.
  • 4032 low expansion high silicon aluminium alloy heat treated to SRP specifications
  • CNC Machined ring grooves accept 1/16, 1/16, 3/16 rings (Rings Sold Separately)
  • Includes wrist pin see footnotes for diameter D=912x2750 140 wall, C=927x2750 150 wall


  • Bore Diameter: 4.125
  • Compression Height: 1.230
  • Compression Ratio with 58cc chamber volume: 13.2
  • Compression Ratio with 64cc chamber volume: 12.2
  • Compression Ratio with 70cc chamber volume: 11.4
  • Piston Volume: -5
  • Cylinder Head: SMALL BLOCK FORD 20 DEG
  • Piston Pin Outside Diameter: 0.927
  • Piston Pin Length: 2.750
  • Piston Pin Material: 5115
  • Ringset Included: No
  • Top Compression Ring Thickness: 1/16"
  • Second Compression Ring Thickness: 1/16"
  • Oil Ring Thickness: 3/16"
  • Piston Material: 4032
  • Forging Type: FSR
  • Piston Avg Weight: 463
  • Pin Wall Thickness: 0.150
  • Piston Type: Flat
  • Ring Set: S100S8-4125-5

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