GrimmSpeed HiFlow Exhaust Manifold Crosspipe - 06-07 WRX



Vehicle Fitment:
2006-2007 Subaru WRX

Replace that teeny, tiny factory pipe that is trying so hard to handle 50% of all your exhaust flow. Upgrade to the GrimmSpeed Crosspipe and gain ~5 to 8 HP!

Subaru supplies its turbo owners with a tiny, little crosspipe from the factory. 50% of your exhaust gasses are passing through this tiny pipe and, well, that's just a problem. Crosspipes run in very harsh conditions when bolted to your car so it is important to use high quality components otherwise you risk fatigue. Do not worry though, GrimmSpeed has a solution for you!

This unit is built from 2" 304 Stainless Steel throughout, maximizing exhaust flow from cylinders 1 and 4 to the manifold collector for faster turbo response. This unit has a flex in the center to allow for easier installation and for thermal expansion during hard driving.
  • Gaskets Included
  • Flex Joint: 321 Stainless Steel "Tuned-Bellow" w/ Interlocking Liner
  • Tubing: 14 Gauge 304 Stainless Steel Piping w/ Brushed Finish - 33% thicker than most competitors
  • Pipe to Flange Connection: Cut-Back flange allows much smoother connection. Piping is flush with flange so there is no step into the pipe.
  • Flanges: 1/2" 304 Stainless Steel CNC Milled - All 3 sides are milled for precise tolerances in manufacturing
  • Increased HP by ~5-8HP
  • Improves airflow in mid-high range

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