• HKS Hi-Power Muffler Exhaust Honda Civic SI Coupe 2017+ | 31006-BH001
  • HKS Hi-Power Muffler Exhaust Honda Civic SI Coupe 2017+ | 31006-BH001

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Hi-Power Muffler Cat-Back Exhaust

Fits: 17+ Civic Si Coupe

$1,20000
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Pay over time available · Est. $37.50/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 Muffler Cat-Back Exhaust
Fits: 17+ Civic Si Coupe
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Fitment

Please Note: Title keeps legacy '2017+' wording (HKS Japan lists Model Year 17/** open-ended) as [17+ Civic Si Coupe]; 'Hi-Power Muffler' kept as HKS's official series name per the HKS Japan table header and dealer naming. Coupe-only fitment: the sedan variant is a different HKS part (31006-BH002). Buckets do not encode body style - documented here; closest valid label '2017-2021 Honda | Civic Si' used. Legacy YouTube embed (O7NlbpLZRww) dropped per description format rule; video ID noted here. Not on sale ($1200.00 = compare-at) - no On Sale tag. Media: 2 legacy images kept (provenance unverified); no official HKS product images attached - flag for Leo's media sweeps.
  • 2017-2021 Honda | Civic Si

Description

The HKS Hi-Power Muffler Cat-Back Exhaust for the 2017+ Honda Civic Si Coupe (FC3, 1.5L turbo) is HKS's race-inspired High Power & High Performance system for the 10th-generation Si. Dual 97mm titanium-look center-exit tips and a 60mm main pipe in SUS304 stainless steel cut exhaust pressure to 50 percent of stock, letting the turbo run smoothly from low RPM for stronger output across the speed range - and the effect grows with tuning, supporting up to 500 ps without power loss. The system delivers HKS's signature aggressive, resonant Hi-Power sound.

  • Fits 2017+ Honda Civic Si Coupe (FC3, 1.5L turbo)
  • Ti dual-tip Hi-Power muffler; 97mm tip diameter
  • 60mm center pipe; SUS304 stainless steel construction
  • Reduces exhaust pressure to 50% of stock; supports up to 500 ps
  • Sound: stock 81 dB / HKS 95 dB (close)
  • Gaskets and installation hardware included
  • HKS part 31006-BH001

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