JE 99.5mm 8.5:1 Time Attack FSR Piston Set (79mm Stroke)- Subaru WRX 2006-2014 / STi 2004-2021 (+Multiple Fitments) Subaru-Forester-XT-2010 IE's FDS design eliminates this

IE's FDS design eliminates this problem and works to deliver more boost to the engine by minimizing pressure drop across the intercooler

GrimmSpeed Cold Air Intake System (060077)

Larger catalytic converters are better because they allow for more exhaust flow and the increased catalysts surface area allows for better exhaust gas filtering which means emissions compliance and will NOT trigger a check engine light

six rivet carriage is good for ease of gear transition with higher horsepower

JE 99.5mm 8.5:1 Time Attack FSR Piston Set (79mm Stroke)- Subaru WRX 2006-2014 / STi 2004-2021 (+Multiple Fitments) Subaru-Forester-XT-2010 IE's FDS design eliminates thisJE 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. JE's Subaru Time Attack FSR 99. 5mm piston set starts with 2618 T6 high tensile forged aluminum blanks. The pistons are specifically designed and