VSC Performance is the parts branch of Vermont SportsCar, the legendary builder of Subaru rally cars and the company responsible for all of Subaru of America's motorsports programs.
The VSC Performance GESI catted downpipe is a motorsports-oriented part designed to allow legal transit on public roads while providing the highest-possible flow for performance on rally stages and rally cross events.
The downpipe is made of all stainless steel 304 mandrel-bent tubing, with thick stainless steel flanges and extra-beefy support brackets. The 49-state GESI cat is the latest generation for maximum compatibility and minimum chance of Check Engine lights. A flat flange at the rear of the J-pipe bolts directly the VSC Performance cat-back, or most other aftermarket cat-backs that have a flat flange on the front.
You could also pair this downpipe with a stock-style cat-back with a donut gasket by using an adapter, sold separately.
This pipe is not CARB-approved and therefore cannot be sold to California residents. For other states, please read and understand your local laws; we do not claim to know the latest state laws in every one of the 49 US states. Athough we use GESI cat-equipped J-pipes regularly and our customers have good luck with them, we cannot guarantee that this pipe will not trigger catalytic-converter Check Engine light codes, and we will not accept returns or warranty claims related to such codes.
Hardware and gaskets are included.
Fits all manual-transmission 2008-2014 Subaru WRX and 2008-2021 WRX STI. Does NOT fit automatic transmission cars.