JE Pistons and Rings 99.75 Bore 79mm Stroke 9.5:1 Comp Subaru WRX / STI EJ257 2004-2021 Vehicle Model_IS 250 An added benefit of the

An added benefit of the ACT Prolite flywheel is that they are serviceable and can be resurfaced with no need to purchase additional parts

If you have a 2015-2017 WRX or STI with a Front Mount Intercooler

Red illuminated analog-style display

housing bore: 2

6 pad race clutch disc paired with their ever popular heavy duty pressure plate

JE Pistons and Rings 99.75 Bore 79mm Stroke 9.5:1 Comp Subaru WRX / STI EJ257 2004-2021 Vehicle Model_IS 250 An added benefit of thePart #: 310937 JE piston designs are specifically engineered for extreme applications up to, and including, professional competition 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: SUBARU EJ257 TIME ATTACK "FSR" NOTE: NOW COMPATIBLE WITH EITHER OEM OR AFTERMARKET RODS! SOME BLOCKS MAY REQURE CLEARANCING FOR STROKER