There are 12 products.

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WRX/STI Rear Muffler
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WRX/STI Rear Muffler

The TurboXS WRX STI Standard Rear Muffler Assembly is the epitome of subdued looks but performance sound. It's a full 3 inch straight...

$450.45
WRX/STI Rear Muffler
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WRX/STI Rear Muffler

A 3" straight through design unleashes all the power your engine can make. Unique flange design allows the WS02-RMA-TI to be bolted...

$481.95
WRX/STi Racing Bypass Valve
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WRX/STi Racing Bypass Valve

Specifically designed for MY 2002 - 2007 Subaru WRX and STi's will also fit the 2008-2012 STI, the WS-RBV requires no adapter kit to...

$249.00
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WRX/STI External Wastegate Uppipe

The externally gated uppipe allows you to get every last bit of power out of your stock location turbocharger.  Uppipe is TIG welded to...

$366.45
WRX/STi Catless Upppipe
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WRX/STi Catless Upppipe

The TXS uppipe is a direct replacement for the factory uppipe connecting the exhaust header to the turbocharger inlet.  Design is all 304...

$219.45
WRX/STI Cat Back Adapter Pipe
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WRX/STI Cat Back Adapter Pipe

The TXS cat-back adapter allows you to use our ORIGINAL design downpipe (WS-DP) with any 3" catback exhaust system.?

$156.45
 WRX Stage 4 Power Package
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WRX Stage 4 Power Package

The WRX Stage 4 kit gives you a 108 ft. lb and 144 hp increase over your stock vehicle. For a total output of 281 ft. lbs and 311 whp....

$5,175.00
WRX Stage 3 Power Package
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WRX Stage 3 Power Package

The WRX Stage 3 kit gives you a 70 ft. lb and 76 hp increase over your stock vehicle. For a total output of 244 ft. lbs and 243 whp. The...

$3,445.00
WRX Stage 2 Power Package
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WRX Stage 2 Power Package

The WRX Stage 2 kit gives you a 48 ft. lb and 59 hp increase over your stock vehicle. For a total output of 221 ft. lbs and 226 whp. The...

$2,596.00