JE Pistons and Rings 100 Bore 79mm Stroke 9.5:1 Comp Subaru WRX / STI EJ257 2004-2021 vendor_Magnaflow Performance however we can not guarantee

however we can not guarantee fitment with other companies gauges

Heavy-Duty reinforced pressure plate

OEM steel endlinks are small

The Tomioka Throttle Body Hose is longer than the stock hose to make sure it’s securely clamped under high boost condition

JE Pistons and Rings 100 Bore 79mm Stroke 9.5:1 Comp Subaru WRX / STI EJ257 2004-2021 vendor_Magnaflow Performance however we can not guaranteePart #: 310938 JE piston 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: SUBARU EJ257 TIME ATTACK "FSR" NOTE: NOW COMPATIBLE WITH EITHER OEM OR AFTERMARKET RODS! SOME BLOCKS MAY REQURE CLEARANCING FOR