Forged CP Pistons Subaru WRX STI EJ257 100MM 9:1

CP Pistons are made of 2618 aluminium, with less amount of silicon than other pistons made of 4032 aluminium.

Along with full radius dome designs, high performance rings and lightweight pins, CP Pistons represent the highest quality and are engineered for maximum power.

Complete with rings, wristpins & locks, and specification sheets.

Fits: Subaru WRX STI EJ257

Bore size: 100MM

Compression ratio: 9,0:1