Turbo XS 02-07 WRX/STI / 04-08 Forester XT Catted Stealth Back Exhaust

Black Ops Auto Works carries one of the largest selections of performance exhaust systems available online, with 7,700+ products covering cat-back exhausts, axle-back exhausts, turbo-back systems, downpipes, headers, mid-pipes, X-pipes, H-pipes, mufflers, resonators, catalytic converters, exhaust tips, and every component in between. Whether you're building a street car, a daily driver, a diesel truck, or a track build, the right exhaust upgrade is here. Shop by Exhaust System Type Cat-Back Exhaust Systems: The most popular performance exhaust upgrade. Replaces everything from the catalytic converter back for improved sound, better flow, and premium tip styling. Available in single exit, dual exit, and quad exit configurations. Axle-Back Exhaust Systems: A simpler bolt-on that replaces the rear section from the axle back. Best for drivers who want an improved exhaust note and cleaner tip appearance without a full system swap. Headers and Manifolds: Long tube headers and shorty h...

A turbo back exhaust replaces every exhaust component from the turbocharger outlet to the tailpipe tip, including the downpipe, mid-pipe, catalytic converter or test pipe, and cat-back section. This full-system replacement delivers the most significant exhaust flow improvement available and produces the largest power and sound gains of any exhaust upgrade. Popular Turbo Back Exhaust Components A complete turbo back exhaust system typically includes a high-flow downpipe with a 200 or 300 cell metallic catalytic converter or a test pipe for track-only use, a flex section to absorb drivetrain movement, a mid-pipe section, and a cat-back section with resonator and muffler. Popular brands offering complete turbo back systems include Invidia, Agency Power, Borla, Corsa, and Milltek Sport, with options for stock-replacement catalysts or high-flow alternatives depending on emissions requirements. How much power does a turbo back exhaust add? On a modestly tuned turbocharged vehicle, a compl...

TurboXS has manufactured performance parts for turbocharged vehicles since 1999, specializing in blow-off valves, intercooler kits, turbo inlets, downpipes, and boost control products engineered for popular turbocharged import and domestic platforms. TurboXS products are known for precise fitment and proven performance on Subaru, Mitsubishi, and other turbocharged sport compact platforms. Popular TurboXS Products The TurboXS product lineup includes recirculating and atmospheric blow-off valves compatible with the Subaru EJ and FA series engines, top-mount and front-mount intercooler kits for the WRX and STI, high-flow turbo inlets and charge pipes, race downpipes with high-flow catalytic converters, and boost controller kits for managing boost pressure on modified turbocharged applications. TurboXS has been a trusted name in the Subaru performance community for over two decades. What vehicles does TurboXS support? TurboXS specializes in parts for the Subaru WRX and STI across multip...