Introduction

2002-2014 Subaru WRX, 2004-2021 Subaru WRX STI, and 2005-2009 Subaru Legacy GT HiFlow Exhaust Manifold Crosspipe by GrimmSpeed

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 lightweight”, 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.

Features

• Constructed from High-Quality 204 Stainless Steel

Benefits

• Boost transition is improved over stock
• Helps airflow in the mid to high rpm range.

Applications

• 2002-2014 Subaru WRX
• 2004-2021 Subaru WRX STI
• 2005-2009 Subaru Legacy GT

What’s In The Box?

• 1 – HiFlow Exhaust Manifold Crosspipe

Warranty

• GrimmSpeed’s Standard Limited Warranty