CP Piston & Ring Set for Subaru EJ257 WRX STI- Bore (99.75mm) - Size (+0.25) - CR (8.5) - Set of 4
CP Pistons are available standard or oversized. CP pistons are compatible with oversize valves and higher lift cams. Specific X designated part numbers incorporate an X-style forging for additional strength, durability and weight reduction. Along with full radius dome designs, high performance rings and lightweight pins, CP Pistons represent the highest quality and are engineered for maximum power. Pistons can be ordered with skirt coating if desired.
Deep valve relief depth accommodates high lift camshaft
Made for +1mm valve sizes
Custom skirt cam and barrel design
High strength aluminum forgings
High performance rings
Fully CNC machined and balanced to +/- 1 gram
Wrist pins included at no additional cost
Double pin oilers, force fed oil ring
Pick lock grooves for easy lock removal
Pin fitting included
2004-2012 Subaru STi
Actual Product May Vary from Image.
This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov