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HKS

Super Turbo Dual Stainless Steel Tip Cat-Back Exhaust

Fits: 2015-2021 WRX / WRX STI

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Pay over time available · Est. $68.75/payment
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Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.

Pay over time available · Est. $68.75/payment
ⓘ

Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.

HKS Super Turbo Dual Stainless Steel Tip Cat-Back Exhaust
Fits: 2015-2021 WRX / WRX STI
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Fitment

Please Note: Fits 2015-2021 Subaru WRX and WRX STI (VA chassis, FA20/EJ25 turbo). 31029-AF011 is the stainless-steel tip variant with dual silver 124mm tips — distinct from the titanium-tip Super Turbo Ti (31029-AF013V). Center pipe with resonator included. Note: with a stock j-pipe/downpipe, the GrimmSpeed stock-DP-to-aftermarket-3in-catback adapter (p/n 077046) is required.
  • 2015–2021 Subaru | WRX STI
  • 2015–2021 Subaru | WRX

Description

HKS designed the Super Turbo Muffler cat-back to deliver powerful performance with a quiet, comfortable sound: once you step on the pedal, a dry sporty exhaust note is heard throughout the cabin. A 75mm straight structure generates the lowest exhaust pressure possible while maintaining interior comfort, and the JASMA-standard sound suits street use without sacrificing performance.

  • HKS part 31029-AF011 — the stainless-steel tip variant (dual silver tips, not the burnt-blue titanium tips of the Super Turbo Ti 31029-AF013V)
  • Full SUS304 stainless steel construction
  • 75mm main piping splitting to dual 60mm piping
  • Two 124mm (4.9 in) polished stainless tips with owl-feather slot design to reduce exit sound
  • Center pipe with resonator included
  • Sound level: 85dB (stock 78dB); 60dB at idle for both
  • Fits 2015-2021 Subaru WRX and WRX STI (VA chassis)
  • Note: with a stock j-pipe/downpipe, the GrimmSpeed stock-DP-to-aftermarket-3in-catback adapter (p/n 077046) is required

Shipping and Delivery

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Warranty and Support

For HKS warranty information, contact our support team.

Return and Refund

Eligibility, exclusions, applicable fees and exceptions are detailed in our Return Policy. Restrictions apply to special-order and custom products.

Proposition 65

Proposition 65 Warnings: cancer and reproductive harm www.p65warnings.ca.gov