GrimmSpeed HiFlow Exhaust Manifold Crosspipe - 02-05 WRX / 08-14 WRX / 04-14 STi
2002-2005 Subaru WRX
2008-2014 Subaru WRX
2004-2014 Subaru STi
(* Not for 06-07 WRX models *)
This pipe should net around 5-8 HP increase or see up to 15 HP when combined with the GrimmSpeed Ported Manifold. Available bare, stainless steel or with a black, high-temp ceramic coating. Fits 2002-2005 WRX, 2008-2014 WRXand 2004-2014 STi.
The entire GrimmSpeed HiFlow Crosspipe is made of 304 stainless steel (flanges, flex, tubing) and has a pipe-wall thickness of 14 gauge. This is the most heavy-duty pipe you will find! Many other pipes use cheap, thin steel and are marketed as "super light weight."
The one-of-a-kind triple layer flex joint is not located in the bend, which adds to the life expectancy of the flex section. This unit is built from 1.92" 304 stainless steel tubing, maximizing exhaust flow from cylinders 1 and 4 to the manifold collector for faster turbo response.
Customers have seen up to 15 HP increase when combined with the GrimmSpeed Ported Subaru Exhaust Manifold. The pipe by itself should net around 5-8 HP increase.
Available bare stainless steel or with a black, ceramic coating.
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