aFe BladeRunner | Intercooler Pipe Kit | Honda Civic Type R | FK8 2.0T K20C1 | 2017-2021Flow and Performance: aFe POWER intercooler tubes are constructed out of mandrel bent, powder coated texture red aluminium tubing to maximize flow. The Hot Side tube is 2 1 4 IN diameter and the cold side is 2 1 2 IN diameter. The smooth transition bends decrease turbulence and minimizes boost loss, which increases horsepower and torque. The aFe tubes outflow the factory tubes by 7%. Perfect Fit: Utilizes the factory mounting locations to provide