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Agile Cat-back Exhaust Systems for 2002-2007 Subaru WRX/STI

At Agile we’ve always sought to bring the highest quality and best performing parts to market. In pursuit of that goal, we have created our own line of full 3-inch cat-back exhaust systems for the 2002-2007 Subaru WRX/STI. Our system is designed for maximum performance, while also giving our customers three options for sound and volume levels. Whether you’re looking for a stealthy setup with our twin-resonated mid-pipe or an all-out racing exhaust sound with no resonators, we have the cat-back exhaust for you. All three exhaust systems feature a straight-exit tip for a stock-like appearance (no JDM slant/no melon launcher).

All of our systems utilize Magnaflow resonators and mufflers with large diameter, perforated cores, which have no louvers or baffles for maximum flow rate. These Magnaflow components were engineered and selected to provide a deep, smooth tone and powerful sound to take advantage of the Subaru’s unique exhaust note. Each exhaust is hand-built and TIG welded by one of our professional welders using 100% stainless steel.

Our exhausts feature:

Agile Race Cat-back - $599
Our Race system is our lightest, loudest, and throatiest exhaust system, designed for those who want to hear and be heard. This system has no resonators, but does feature a single muffler at the back to comply with some tracks’ regulations which require a muffler.

Agile Sport Cat-back - $649
Our Sport system is our mid-level volume and tone option. It is a bit louder than the Stealth system at idle, cruise, and wide open throttle. This system features a single resonator in the mid-pipe to maintain a smooth tone and eliminate drone under low throttle cruise conditions.

Agile Stealth Cat-back - $699
Our Stealth system is our quietest offering, featuring two resonators in the mid-pipe. This system is one of the quietest systems on the market that will not compromise exhaust flow. It is quiet but audible at idle and cruise, but still very sporty sounding at wide open throttle. The Stealth system was designed to avoid attracting unwanted attention when driving normally, but to still sound great at higher throttle.