GrimmSpeed HiFlow Exhaust Manifold Crosspipe Subaru WRX / STi / LGT 2002-2021
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. Do not worry though, GrimmSpeed has a solution for you!
The GrimmSpeed Subaru 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 in the aftermarket. Many other pipes use cheap thin steel and are marketed as "super light weight", not us. 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.
Add on our amazing Ceramic Heat Coating for a small fee to help keep the heat in and speed up those exhaust gasses even more.
Boost transition is improved over stock
Helps airflow in the mid to high rpm range.
- 2002-2005 and 2008-2014 Subaru WRX
- 2004+ Subaru STI
- 2005-2009 Subaru Legacy GT
This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov