• HKS Hi-Power Cat Back Exhaust WRX/STI 2002-2007 | 3106-EX008

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Hi-Power Cat-Back Exhaust

Fits: 02-07 WRX/STI

$77000
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Pay over time available · Est. $24.06/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.

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HKS Hi-Power Cat-Back Exhaust
Fits: 02-07 WRX/STI
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Fitment

Please Note: Title retitled per cleanup rules: part-number fragment removed (SKU-off-title rule); 'Cat Back' -> 'Cat-Back'; [02-07 WRX/STI] matches legacy bracket years and dealer fitment (verified, no change in years). Not on sale ($770.00 = compare-at) - no On Sale tag. Legacy install note (GrimmSpeed 077046 adapter with stock downpipe) retained in description bullets. Media: 1 legacy image kept (provenance unverified); no official HKS product images attached - flag for Leo's media sweeps.
  • 2004-2007 Subaru | WRX STI
  • 2002–2007 Subaru | WRX

Description

The HKS Hi-Power Cat-Back Exhaust for the 2002-2007 Subaru WRX and 2004-2007 WRX STI (GD/GDB chassis) is a full 3-inch straight-through system built for turbocharged applications. Mandrel-bent piping with an SUS304 stainless steel muffler and corrosion-resistant coated SUH409 piping reduces back-pressure and turbo lag while producing HKS's signature deep, throaty exhaust tone. An angled-exit muffler with a polished 120mm tip gives the system its classic JDM look and sound. Built to JASMA standards and made in Japan, it bolts directly to the factory exhaust with the included gaskets and hardware.

  • Fits 2002-2007 Subaru WRX and 2004-2007 WRX STI (GD/GDB)
  • Full straight 3 in (75mm) piping; angled-exit Hi-Power muffler
  • SUS304 stainless steel muffler; coated SUH409 stainless piping
  • 120mm polished tip; meets JASMA standards
  • Gaskets and installation hardware included
  • Install note: with a stock j-pipe/downpipe, the GrimmSpeed stock-DP-to-aftermarket-catback adapter p/n 077046 is required
  • HKS part 3106-EX008

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