JE TIME ATTACK "FSR" Pistons 99.5mm Bore 2006-2014 WRX 2004-2021 STI
Time Attack FSR Pistons now available! 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.
-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 Tru Arc locks included
Bore: 99.5mm (Standard)
Head CC's: 57
C/r With 0.40: 8.5:1
Dome CC's: -16.5