Super Turbo Dual Stainless Steel Tip Cat-Back Exhaust

• 2015–2021 Subaru | WRX STI
• 2015–2021 Subaru | WRX

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

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