Fitment: This high - flow crosspipe fits 2002 - 2005 Subaru WRX, 2008 - 2014 Subaru WRX, 2004 - 2021 Subaru STI, and 2005 - 2009 Subaru Legacy GT. Note that it does not fit 06 - 07 WRX. Features: Crafted from 304 stainless steel, including flanges, flex, and tubing, with a 14 - gauge pipe - wall thickness. It's the most heavy - duty aftermarket pipe. The unique triple - layer flex joint, not in the bend, extends its lifespan. Made from 1.92 - inch 304 stainless steel tubing, it maximizes exhaust flow from cylinders 1 and 4 to the manifold collector for quicker turbo response. The flanges' insides are cut back for a flush mating surface and optimal flow. Available in a brushed finish or amazing ceramic heat coating to contain heat and speed up exhaust gases. Product details: Finish options are brushed (uncoated) or black ceramic coated. 304 stainless steel construction. 14 - gauge pipe wall. 1.92 - inch piping diameter. Improves boost transition over stock. Enhances airflow in the mid - to high - RPM range. Comes with heavy - duty GrimmSpeed gaskets. Flex joint is 'Tuned - Bellow' with an interlocking liner. Cut - back flanges for a smooth connection. Flanges are 1/2 - inch 304 stainless steel CNC milled with precise tolerances. Increases power by 5 - 8 HP. Sold individually.
Using your GrimmSpeed high - flow crosspipe is straightforward. First, make sure your vehicle is on a stable surface and the engine is cool. Follow the fitment information to ensure it's the right match for your Subaru model. When installing, use the included heavy - duty GrimmSpeed gaskets for a proper seal. Tighten all the connections securely but be careful not to overtighten. For maintenance, if you choose the brushed finish, a simple stainless - steel cleaner can be used to keep it looking good. If you have the ceramic heat - coated version, avoid using abrasive cleaners as they may damage the coating. Regularly check the flex joint and all connections for any signs of wear or looseness. Also, keep in mind that this crosspipe does not fit 06 - 07 WRX models, so double - check your vehicle's details before installation.
