HKS Hi-Power Catback Exhaust 2015-2021 WRX / STI

HKS Hi-Power Catback Exhaust 2015-2021 WRX / STI


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OUT OF STOCK, available on backorder.

This is the HKS Hi-Power Exhaust System that features a larger piping diameter, smooth bends, and durable stainless-steel construction to provide your vehicle with a lifetime worth of performance. The design removes any restrictions to the exhaust flow that is associated with the OEM design, allowing your engine to exhale much easier for improved horsepower and torque, all while creating an aggressive exhaust note. 


  • 304 stainless steel construction
  • 3" piping diameter
  • Dual Hi-Power mufflers with 4" burnt exhaust tips
  • Smooth bends
  • Improves the exhaust flow
  • Reduces turbo lag
  • Creates more power, performance, and improves the low-end torque
  • Produces an aggressive exhaust note
  • Exhaust hangers welded onto the OEM location to make for a direct exhaust replacement
  • Will include new hardware and O-ring gaskets

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