JE Pistons 310937 forged pistons Subaru Forester, Legacy, Outback, Impreza WRX, WRX STi 2.5 DOHC (EJ255, EJ257) 99.75 mm CR 9.5:1

For: Subaru Forester, Legacy, Outback, Impreza WRX, WRX STi with 2.5 DOHC EJ255, EJ257 engines

• Time Attack FSR Pistons now available!
• 2618 T6 high tensile forged aluminum
• JE designs are specifically engineered for extreme applications up to, and including, professional competition. In this environment, the higher compression ratios, highest boost or heavy nitrous usage necessitate the higher tensile strength 2618 aluminum alloy.
• Dome and dishes feature smooth flowing radii for excellent flame travel.
• 1.2 x 1.2 x 2.5mm ring widths.
• .905 x 2.250 straight wall carbon steel wrist pin provided.
• Pin fitting and Tru Arc locks included
• Rings Now Included