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Ships within 48 hours · Estimated delivery Jul 31 - Aug 5
Typical Output Ranges from 380WHP - 450WHP
Dynamic sound levels apply to a moving vehicle and not the volume from a static vehicle
and signature 5" slash-cut tips
Longer clutch life achieved through ACT's exclusive diaphragm design
GrimmSpeed Boost Control Solenoid Cover BLACK - Subaru 08-21 STI (112000.2) 5004 Typical Output Ranges from 380WHPGrimmSpeed engine dress up pieces have been extremely popular with Subaru owners over the years, but there's always been one small piece missing: Introducing The GrimmSpeed Boost Control Solenoid Cover for the 08 2021 Subaru STI! We decided on a subtle design for this cover that mimics the vent styling on our matching GrimmSpeed Alternator Cover. Is it made from a single piece of lightweight aluminum with a laser cut GS logo for you to proudly
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