The American Thunder axle-back kit features stainless steel construction with larger 2.50-inch mandrel-bent tubing replacing the small factory 2.25-inch tailpipes and resonators. The non-resonated tailpipes exit in the stock location, utilize the factory hanger locations are finished off with large 4.50-inch diameter black ceramic coated 304S stainless steel tips, giving your RAM some bark to go with its bite. Includes installations instructions and all necessary hardware for a quick and easy at home installation. Note: Fit 2/4 wheel drive trucks and all wheelbases except trucks with the factory single tailpipe.