For 5 Series E60 E61 F10 2.5" IN 3.5'' OUT Carbon Wall Dual Pipe Exhaust Tip
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.