High Flow Exhaust Downpipe for Honda 17-23+ Civic Type R FK8 & FL5 / 23+ Integra Type S DE5

Unlock the full potential of your K20C1-powered platform with this Catless Exhaust Downpipe Upgrade. Designed for the 2017–2021 Civic Type R (FK8), 2023+ Civic Type R (FL5), and 2023+ Acura Integra Type S (DE5), this downpipe delivers maximum exhaust flow, reduced backpressure, and faster turbo response. Constructed from high-quality T304 stainless steel with smooth mandrel bends and precision TIG welds, it’s built to handle extreme heat and performance demands. The CNC-machined turbo flange ensures a perfect fit with OEM and aftermarket turbos, while retaining factory O2 sensor locations for proper ECU function. This is a true bolt-on upgrade no cutting or welding required and pairs perfectly with a high-flow front pipe and proper ECU tuning for maximum gains. Performance Gains: +15–25 HP on stock tune Up to +40+ HP with tuning Key Benefits: Increased horsepower & torque Faster turbo spool Improved exhaust flow Direct bolt-on installation Fitment: 2017–2021 Honda Civic Type R (FK8) 2023+ Honda Civic Type R (FL5) 2023+ Acura Integra Type S (DE5) ⚠️ For off-road and track use only. Not emissions compliant in all areas.