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CP Pistons

CP Piston & Ring Set for EJ257 WRX STi - Bore (99.75mm) - Size (+0.25mm) - CR (9.0)

CP Piston & Ring Set for EJ257 WRX STi - Bore (99.75mm) - Size (+0.25mm) - CR (9.0)

$858.90 USD
$858.90 USD $858.90 USD
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The forged pistons used in the CP WRX and STI have an excellent ring seal, a higher vacuum, less blow-by, improved durability, and more power and torque across the power band. Even better, peak horsepower is maintained for the duration of the piston rings' life. This is made possible by CP's unique machining processes and lightweight forgings. Each and every piston made by CP demonstrates the company's dedication to racing.

With a focus on performance and dependability, CP is committed to using the best forging processes and CNC equipment available. This, combined with strict quality control, results in consistently high-quality products. The quality control requirements at CP are among the finest in the business.

Applications:

  • Subaru Impreza WRX STI 2004-2014
  • Subaru Impreza WRX 2006-2014
  • Subaru WRX STI 2015-2021

Features:

  • high-strength forgings made of aluminum.
  • Extremely light construction.
  • Fully CNC-machined and +/- 1 gram balanced.
  • Includes accumulator groove.
  • Force fed double pin oilers from the oil ring.
  • Including wrist pins
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