Do you already have a TurboXS Stealthback combo? Complete your setup with a Turbo XS cat back. The cat-back consists of a 3" midpipe and a quad-tip muffler with polished stainless steel tips. The large piping diameter on the Turbo XS Catback makes it one of the best at adding power to the market.

2008-2014 STI hatchbacks only.

2011-2014 WRX hatchbacks only.

2008+ STI GT Series STI Exhaust was designed with three things in mind:

1. Style
2. Sound
3. Performance

We engineered the dual 3.5-inch tips on each side of the STI to accentuate the rear valance, giving it that aggressive look from the rear while maintaining its sophisticated attitude.

Our goal was to design a muffler that wouldn't take away from the well-loved, "Boxer" sound our fans were accustomed too. Effectively, we had attenuated the droning while on the highways and successfully keeping the general exhaust-note down to reasonable levels.

This was accomplished by using strategically positioned panels inside the muffler that reflect soundwaves, canceling out bad tones without impeding the exhaust flow. We reinforced this muffler with 3-inch mandrel-bent stainless steel piping throughout to better promote exhaust gas energy. The final result was an immaculate exhaust system that will never hinder horsepower.