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Transform the sound, appearance, and performance of your Subaru with the HKS Hi-Power Single Exit Cat-Back Exhaust System. Designed specifically for the 2015-2021 WRX and STI, this premium exhaust replaces the factory quad-tip setup with an aggressive single-exit configuration featuring an 85mm main pipe and race-inspired muffler design.
Constructed from high-quality SUH409 coated steel and SUS304 stainless steel, the Hi-Power exhaust reduces back pressure to improve throttle response while delivering the signature HKS sound. The included removable inner silencer allows drivers to tailor exhaust volume for daily driving or track use, while the lightweight design sheds nearly 20 pounds compared to the factory exhaust system.
The HKS Hi-Power Single Exit Exhaust offers the perfect balance of performance, sound, and weight reduction. Its high-flow design helps improve engine efficiency while delivering the aggressive exhaust note enthusiasts expect from HKS. Whether you're building a street car or weekend track machine, this exhaust system provides a distinctive look and proven performance upgrade.
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