CNT Racing V2 Bellmouth catted Header For 12-15 Honda Civic Si / 13-15 Acura ILK K24

CNT RacingSKU: HD-9717

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  • Features stainless Bellmouth is a 4 inch to a 76mm / 3inch piping
  • fitment to fit both stock and any aftermarket exhaust.
  • 200 cell metal performance high flow cat
  • Improves horsepower, torque, throttle response, and fuel mileage
  • CNC machine mandrel-bent stainless steel tubing for maximum exhaust flow for K24 motor
  • Significant weight reduction compared to OEM exhaust system

    Not for sale in the state of California, New York, and Maine.

Customer Reviews

Based on 5 reviews
David Difulvio jr

i love the exchust its amazing only reason can give it 5 stars is because the hiss is very loud could be user error and maybe theres a tiny exchust leak but if its my fault then 5 stars if i go check it out and tighten everything back up and the hiss is still this loud then ill get use to it im sure but wish it was a bit quieter and didn’t sound like an exchust leak!!


This downpipe was high quality for the price. The downpipe flows very well and really opened up the exhaust. Very good product!

Mike Wirth
Great product!

The down pipe fit, and finish were excellent. Everything needed to swap the stock downpipe out was present in the box. The sound is awesome. Excited to get the car tuned and see how much horsepower it'll make!

Brandon clement
3" CNT Catted Downpipe

This downpipe is a must for anyone trying to get any power gains and way less restriction in the factory downpipe. I did a full review on this product on my youtube channel 413 speed! Thanks CNT!

Wesley Bittner
Great downpipe

The downpipe looks great, has awesome welds and was shipped out quickly.

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