For Audi A3 A4 S3 S4 1-2Pcs 2.5" In 3.5" Out Carbon Fiber Exhaust Tip Tail Pipe

Step 1: Clean the Surface of Tailpipe. Easy installation: weld-on design, double layer wall, slant angle cut, rolled edge. The bolt-on design makes it super easy to fasten to your exhaust pipe with M6 Allen key, no drilling or welding needed.