GSC Power-Division Exhaust Valves 29mm (STD) Subaru WRX 2015-2021 (Set of 8) | 2281-8 FocusRS_2016-2018 H&R Sport Springs offer the

H&R Sport Springs offer the perfect balance of daily drivability and performance handling

Improves tuning stability and power delivery

making for a truly bolt-on installation (no drilling or modifying required)

or completely damage a fuel injector

100% drop-in fitment

GSC Power-Division Exhaust Valves 29mm (STD) Subaru WRX 2015-2021 (Set of 8) | 2281-8 FocusRS_2016-2018 H&R Sport Springs offer theFitment Information: 2015 2021 Subaru WRX Specs: Stem Diameter: 5. 5mm Overall Length 97. 90mm Head Diameter: 29mm Features: When creating our new valve line we set out to create the best performance longest lasting valves available to the aftermarket. Using advanced 3D design and simulation programs we have created a stronger and higher flowing valve head design. We flow test prototype valve heads in the specific applications to make sure we have the