CP Piston

CP Piston & Ring Set for Subaru EJ257 WRX STi - Bore (99.5mm) - Size (STD) - CR (9.0)

  • Sale
  • Regular price $653.00 USD

SKU : cppSC7425

Whether you’re racing a Honda, Acura, Mitsubishi, Toyota, Nissan, or Subaru, CP Pistons has specially designed high-performance pistons off-the-shelf. In most cases, these will directly replace the stock pistons.

* High strength aluminum forgings
* Super lightweight designs
* Fully CNC machined and balanced to +/- 1 gram
* Wrist pins included at no extra cost
* Accumulator groove included
* Double pin oilers, force fed from oil ring
* Pick lock grooves for easy lock removal

CP Pistons are priced and sold *per piston*. 4 Cylinder engines will require 'Quantity 4' of each part #.


Comp Height: 1.208
Comp Ratio: 9.0:1
Bore: 3.9175 (99.5mm)
Size: STD