The Aero Turbine XL 5050XL is a Resonated 5" i.d. inlet, 5" i.d. outlet. The 5050XL was designed specifically for Diesel Trucks, Semi-Trucks and Motorhomes. The Aero Turbine XL Series 5050L Muffler is composed of high quality 304 stainless steel, embossed with the Aero Turbine XL signature logo and polished to a mirror finish. Inside is a high temperature ceramic acoustic material followed by the patented air foil providing the deep throaty tone that any diesel owner will love. The Aero Turbine XL 5050XL is the latest breakthrough in diesel performance exhaust technology. Designed for high output diesel engines ensuring that your performance diesel truck, motorhome, or semi will perform more efficiently. With a built-in resonator and patented air foil cone, the Aero Turbine XL 5050XL will not only increase fuel mileage, but significantly improve your horsepower and torque while decreasing noise and exhaust gas temperature.