Description:
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.

NOTE: Stroker Pistons not compatible with OEM Rods. OEM Rods must be milled above pin end to clear under crown of piston. Some Blocks may require clearance for stroker applications.

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 Tru Arc locks included

Specifications:
Bore: 99.75mm
Stroke: 83mm
C/D: 28.7mm
Head CC's: 57
C/r With 0.40: 8.5:1
Dome CC's: -21.7
Grams: 401

Applications: 
2006-2007 WRX
2004-2007 STI 
2008-2014 WRX
2008-2014 STI
2015-2021 STI