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Shop now to fuel your passion with trusted performance parts
perfect for wheels with small lug holes
promoting better pad contact and heat dissipation
Enhance your engine bay’s appearance and protect vital components with this premium GrimmSpeed accessory
Grimmspeed V2 Bypass Valve Red 2015-2021 WRX / 2014-2018 Forester XT YMM_2019_BRZ Shop now to fuel yourGrimmSpeed has taken our bypass valve to the next level with a complete redesign of the internal piston, spring, and body for unmatched durability, performance, and style. After extensive testing, we addressed the weaknesses seen in the V1 design and created a valve that holds double the boost pressure of stock units while maintaining a sleek appearance under your hood. In stock FA20 engines, OEM bypass valves have shown internal leakage at as low as
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