JE Pistons and Rings 100 Bore 83mm Stroke 8.5:1 Comp Subaru WRX / STI EJ257 2004-2019 (291064)

JE piston and ring designs are specifically engineered for extreme applications up to, and including professional competition for your Subaru WRX and STI. In this environment, the higher compression ratios, highest boost or heavy nitrous usage necessitate the higher tensile strength 2618 aluminum alloy.

Fitment:

JE Pistons and Rings for SUBARU 2004+ IMPREZA STI , 2005+ FORESTER XT, LEGACY GT, 2006+ WRX EJ257

Features:

• 2618 T6 high tensile forged aluminum
• Dome and dishes feature smooth flowing radii for excellent flame travel
• 1.2 x 1.2 x 2.5mm ring widths
• .905 x 2.500 straight wall carbon steel wrist pin provided
• Pin fitting and wire locks included
• Includes 4 piston / 4 rings