CTS's TTRS High Flow Downpipe features a CNC machined 4" T303 stainless steel vband flange and turbo outlet. Our 3" mandrel-bent stainless steel design is free of obstructions and uses a premium core interlock style flex section. For optimal clearance between downpipe and driveshaft our design splits from a 3"design to a dual 2.5" design where two more stainless steel flanges mate seamlessly to your secondary catalysts or high flow mid pipes. Each downpipe is hand built in our facility, and test fitted in our hand made jigs to ensure exact fitment each and every time. In addition to the quality craftsmanship and great sound, our TTRS High Flow Downpipes come with installation hardware.