HKS Hi-Power Cat Back Exhaust Honda Civic Si Sedan (FC) 2017-2021 | 31006-BH002

Rated 5.0 out of 5
Based on 2 reviews
SKU: hks31006-BH002
Availability: 7 In Stock
Type: Exhaust Cat Back
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Regular Price: $1,100.00 - Instant discount: $250.01 = $849.99

Subtotal: $849.99
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Fitment Information:

2017-2021 Honda Civic SI Sedan


  • Improves horsepower, torque, and throttle response
  • Increases exhaust flow and power over stock
  • Loud and aggressive exhaust tone
  • Material: SUS304 Stainless Steel
  • Piping Diameter: 65mm - 60mm (2.56 - 2.36 inches)
  • Dual Tip Diameter: 97mm (3.82 inches)
  • Gaskets and Hardware for installation included

This HKS Hi-Power Exhaust comes with a 65mm large diameter pipe and full straight structure reduce the exhaust pressure to 50% of the stock. This significant exhaust pressure reduction enables the turbine to run smoothly from low RPM range, which results in the engine output increase in an entire speed range. Also, this pressure reduction effect is enhanced as the tuning level becomes more advanced; the engine output can be increased to 500ps without engine power-loss.

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