JE Pistons and Rings 100 Bore 83mm Stroke 8.5:1 Comp Subaru WRX / STI EJ257 2004-2021 Vehicle Model_FX35 For the best (and safest)

For the best (and safest) performance

Ideal for street

By grinding cores in high volume

Most adjustability available on the market

it is stronger than the OEM piece it replaces

JE Pistons and Rings 100 Bore 83mm Stroke 8.5:1 Comp Subaru WRX / STI EJ257 2004-2021 Vehicle Model_FX35 For the best (and safest)Part #: 291064 JE piston and ring 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: JE Pistons and Rings for SUBARU 2004+ IMPREZA STI , 2005+ FORESTER XT, LEGACY GT, 2006+ WRX EJ257 Features: 2618 T6 high