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WRX Exhaust Parts

(153 products)

Cat-backs, axle-backs, J-pipes, downpipes, up-pipes and headers for the WRX and STI, plus the gaskets and hangers you need to install them.
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A cat-back or axle-back changes the sound and runs fine on the stock tune. Anything ahead of the catalytic converters, like a downpipe, J-pipe or up-pipe, changes how the turbo behaves and needs a matching map. Catless parts are for off-road use only, so check the emissions notes on each listing for your state.

Replacing a downpipe on an older car? Buy new gaskets with it. The old ones rarely seal a second time.

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Shop by generation: 2002–2007 WRX/STI (GD) · 2008–2014 WRX/STI (GR/GV) · 2015–2021 WRX (VA) · 2015–2021 STI (VA) · 2022+ WRX (VB)

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