HiFlow Exhaust Manifold Crosspipe

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 butter 2″ stainless steel, thick 12mm stainless flanges. This unit has a flex in the center to allow for easier installation and for thermal expansion during hard driving.