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Use Coupon Code BOOST5 at Checkout!

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GrimmSpeeed HiFlow Exhaust Manifold Crosspipe - 2002-2005 WRX / 2008-2014 WRX / 2004-2021 STI

SKU: GRM 001001

Starting at $22/mo with . See if you qualify

What's one of the most overlooked anti-flowing Subaru pieces you ask?? ...The stock exhaust manifold crossover. 50% of your exhaust gasses are passing through this tiny tiny pipe and that is not good. Well here comes the solution for this problem.

Welcome the GrimmSpeed Version 2 Subaru Exhaust Manifold HiFlow Crossover. Well they've decided to step it up a notch with the first revision of the crossover. Meet HiFlow Crossover v2. Immaculate welds, smooth as butte. . . Show More >

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Use Coupon Code BOOST5 at Checkout!

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