27WON High Flow Catted Downpipe | 17-23+ Civic Type R FK8 & FL5, 23+ Integra Type S DE5

Unity Performance is the exclusive Canadian Dealer for all 27WON Performance Products in Canada! US folks, please continue to purchase through 27WON directly.

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Fits:

• 2017 - 2021 Honda Civic Type R (Hatch FK8)
• 2023+ Honda Civic Type R (Hatch FL5)
• 2023+ Acura Integra Type S (Hatch DE5)

For off-road use only. CEL can be illuminated.

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27WON's high-flow downpipe uses a 3.75" inlet — the largest drop-in downpipe diameter available for the CTR — letting hot exhaust gas escape the turbine side quickly for better turbocharger efficiency and response. It's designed to match the stock turbo perfectly, and also works with 27WON's own Kuro upgraded turbo (500+ whp capable) or any aftermarket turbo retaining OEM-sized turbine flanges.

Cast from T304 stainless steel and precisely TIG welded section to section for a leak-free connection, the downpipe retains all OEM pickup points so you can reuse your factory heat shields — keeping heat out of the engine bay without extra fabrication. A high-flow 200-cell density metallic foil catalytic converter is tuned specifically for the K20C1's flow characteristics. Across a 6-run dyno average against the stock downpipe, 27WON measured over 10 whp and 28 lb-ft more torque, with a best single run showing over 33 lb-ft over stock.

Features

• 3.75" inlet — largest drop-in downpipe available for the CTR
• T304 stainless steel construction, precision TIG welded
• Retains OEM pickup points — reuse factory heat shields
• 200-cell density high-flow metallic foil catalytic converter
• Dyno-proven: +10 whp / +28 lb-ft average, up to +33 lb-ft on best run
• Matches stock turbo or 27WON Kuro turbo (500+ whp capable); compatible with any turbo retaining OEM turbine flanges
• Includes all nuts, bolts, and studs for install
• Gains increase further when paired with 27WON's full 3" cat-back exhaust