HKS Super Turbo Muffler Cat-Back Exhaust - 2015+ Subaru WRX & WRX STi

Regular price $1,840.00 USD $1,438.88 USD

Ready To Ship! Special Order! Ships in 10+ weeks

Part # hks31029-AF011

The HKS Super Turbo Muffler Cat-Back Exhaust for the 2015+ Subaru WRX & 2015+ Subaru WRX STi is a high performance exhaust system for drivers seeking a tame system that can be driven in the street but opens up power and sound at wide-open throttle. The Super Turbo Muffler series from HKS focuses on factory equipped turbo vehicles creating a perfect balance of street comfort and performance.

The Super Turbo Muffler combines a low back pressure design for improved power and torque but maintains low sound levels at low RPMs for comfortable street driving. This is the perfect hybrid exhaust if you love your neighbors!

  • Subaru WRX [VA] (2015, 2016, 2017, 2018, 2019, 2020, 2021)
  • Subaru WRX STi [VA] (2015, 2016, 2017, 2018, 2019, 2020, 2021)


  • Full SUS304 Stainless Steel Cat-Back Exhaust System
  • 75mm to dual 60mm piping to large dual 124mm tip
  • May require modification of aftermarket rear bumpers/spoilers
  • Includes mid/center pipe with resonator
  • Meant as a performance exhaust with a subdued sound
  • Made in Japan

Extended Information

  • Type: Dual Exit Cat Back Exhaust
  • Piping Diameter: 75mm to dual 60mm
  • Tip Diameter: Dual 124 mm
  • Material: SUS304 Stainless Steel
  • Sound Level @ Idle: 85 dB (OE 78 db)
  • Chassis: VA
  • Engine: EJ25 / FA20
  • Ground Clarence (from lowest point at oem height): 125 [mm]
  • Weight Total: n/a
  • Notes: N/A
  • Warranty: HKS Manufacturers Warranty

Customer Reviews

Customer Reviews

Based on 1 review
Jimmy W. (North Wales, PA, US)
Great Item…A+++ Seller!!

I have received my catback, I always like the HKS Products by HKS Company Limited. They Always Have Great Products. Thanks again to Kamispeed. It worth of waiting for the Product to arrive. 👍🏻👍🏻

Customer Questions


In stock, non special order items can be returned within 30 days of the product arriving to your house or place of work.
Returns will NOT be accepted on Clearance Items, Final Sales, Special Orders, Opened, Installed, Incomplete, or Otherwise Used Products. In order to initiate a return, an RMA number must be requested and approved via e-mail.
All returns will be subject to a 20% restocking fee minus complete shipping cost (roundtrip).

Any processed orders that have not shipped will incur a 6% cancelation refund fee unless the product was not available to ship within a timely manner. No fee will be incurred if used as store credit.

For complete details on our return policy, please see our Help and FAQ link under HELPFUL INFO.

All international orders outside of the USA are subject to duties and taxes per your countries jurisdiction and determined by customs.
Kami Speed serves the right to ship using an alternative method if we see it fit, in order to expedite shipping and reduce your rate depending on product value.