HKS Hi-Power Muffler WRX STI/WRX 2015 US

Shop catback exhaust systems at Black Ops Auto Works for cat-back exhaust kits, performance exhaust systems, stainless steel exhausts, titanium exhausts, dual rear exit exhausts, track exhausts, touring exhausts, axle-back exhausts, and street performance exhaust upgrades. This collection is built for drivers who want deeper sound, improved exhaust flow, better throttle response, aggressive rear-end styling, and vehicle-specific bolt-on fitment. Use this Catback collection to choose the right exhaust system by vehicle platform, brand, material, sound level, tip finish, and driving goal. A catback exhaust can help improve sound, reduce exhaust restriction, support performance upgrades, and give your car, truck, SUV, Jeep, or performance build a cleaner, more aggressive look. Shop Catback Exhaust Systems by Brand Black Ops Auto Works carries catback exhaust systems from trusted performance brands including Borla, CORSA Performance, MagnaFlow, MBRP, AWE Tuning, Invidia, Solo Performanc...

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...

HKS is a Japanese manufacturer of premium performance parts founded in 1973 that has been at the forefront of turbocharged engine development, producing turbochargers, exhaust systems, engine management, intercoolers, and supporting performance components for some of the most iconic Japanese sports cars ever built. The brand's GT and GTIII turbocharger series, Super Sequential Blow Off Valves, and Racing Suction intake kits are recognized globally as benchmark-quality products that combine Japanese manufacturing precision with decades of motorsport development experience. HKS products are particularly well-known in the Toyota Supra, Mitsubishi Evo, Subaru STI, Nissan GT-R, and Honda NSX communities, where the brand's heritage in building the world's fastest versions of these cars has created a loyal following among enthusiasts who want the best available components. From a simple racing suction kit to a complete GT turbo with intercooler and ECU tune, HKS provides an end-to-end perf...