JE FSR Forged Pistons WRX STi EJ257 75mm De-Stroke Long Rod 99.75mm +0.25mm 9.1:1 -7.3 cc 310937

This is the newer FSR (Forged Side Relief) skirt style. JE is slowly transitioning all of their applications over to this superior design. The FSR forging allows unmatched strength while shedding unnecessary weight through machining. In short, they are light, and strong, and they are the future of pistons.

JE has lead the Piston market since the very beginning. All of the big boys making noise in the industry right now use JE because of their superior design and strength. This is a top of the line piston that one would use to build the ultimate street engine or a reliable race engine. All pistons come balanced within one gram, include pin lock grooves and wrist pins at no additional charge.
SUBARU 2004+ IMPREZA STI , 2005+ FORESTER XT, LEGACY GT, 2006+ WRX EJ257

• 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 2.500 straight wall carbon steel wrist pin provided.
• Pin fitting and Tru Arc locks included
• Rings Now Included