(In Stock) Speed Engineering Y-Pipes are made out of 304 stainless steel and offer great quality, performance, and affordability. Our Y-Pipes are mandrel bent, tig welded, and feature natural stainless steel construction. All of our Y-Pipes have been dyno proven. We stand behind our headers & Y-Pipes in saying you will not find a better fitting, quality built, budget header for your vehicle. Revised Y-Pipe: Now works with 4L60E & 4L80E transmissions with factory pan. Also allows more room for 4wd vehicles. Features include: Mandrel Bent Tubing 3" Tubing Natural Stainless Steel Stainless Steel Band Clamps Note: "This system is designed to work with our longtube headers only. It is not designed to work with any factory exhaust manifold equipment". Note: Most 6.0 applications have a 2 into 1 exhaust system which our y pipe system will not work with. Double check your exhaust for confirmation of fitment with single exhaust. Our x pipe kit can work on the 2 into 1 exhaust systems, but require fabrication for connection. (Warning) This is a RACE ONLY product manufactured and sold for installation on vehicles to be used solely for competition purposes. Once this part is installed, the vehicle may never be used, or registered or licensed for use, on a public road or highway. If you install this part on your vehicle and use the vehicle on a public road or highway, you will violate the Clean Air Act 203(a)(3), 42 U.S.C, 7522(a)(3) and may be subject to personal civil or criminal liability.