Custom Heavy Duty CP Pistons

Designed specifically for big boost and high power applications.

These pistons are made to handle up to 1,250 horsepower and over 1,500 horsepower with upgraded pins.

Available in:

  • Comp Ratio: 9.0:1 | Bore: +0.005"
  • Comp Ratio: 9.0:1 | Bore: +0.5mm
  • Comp Ratio: 10.0:1 | Bore: +0.25mm

These Spool CP Custom Pistons feature:

  • CP's heavy duty forging
  • Thicker crown and skirt forging
  • Reinforced pin boss
  • 4 x Valve Pockets
  • Offset gudgeon pin
  • 0.200” 51 pins STD
  • Upgraded 0.200” and 0.250” 9310 pins are available when adding to cart.
  • Includes piston rings, pins and pin locks.

Pistons have an offset gudgeon pin same as the OEM piston.

CP Pistons standard features include:

  • 5310 Gudgeon Pins (9310 thicker wall thickness pins are available as an upgrade)
  • Deep valve reliefs accommodate high lift camshafts
  • Larger valve reliefs for +1mm valve sizes
  • Custom skirt cam and barrel design
  • Accumulator grooves
  • High strength aluminum forgings
  • High performance rings
  • Fully CNC machined and balanced to +/- 1 gram
  • Wrist pins included
  • Double pin oilers force fed from oil ring groove
  • Pick lock grooves for easy lock removal
  • Pin fitting included
SKU CUS-CP-PIS-FOR-BAR-XR6T
Brand Spool Imports

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