J's Racing | SUS Exhaust Plus Front Pipe 70F | Honda Civic Type R | FK8 K20C1 2.0T | 2017-2022By changing the main pipe design to a straight 66 inner diameter (70 outer diameter), J's Racing have successfully increased the torque and power with a higher mid to top RPM range efficiency where the boost is applied. Consequently, you will feel significantly better throttle response and enjoy smooth and stress free driving. The material of the main pipe is 2mm thick SUS 304 stainless steel and it is meticulously hand made one by one with a special