Material: Stainless steel which is durable, corrosion resistance and rustproof 38mm-51mm universal connection diameter.It comes with spring hooks and welding connectors for simply installation. Reducing Overall Weight for Top Performance to Obtain Max Output The Universal Muffler can be used for Dirt Bike, Street Bike, Scooter, ATV, Quad and Any Other Bike with Pipe Diameter 38 mm, very easy to install, can be installed within 5 minutes Any help, you are freely contact with us Product description Features: 100% Brand New, High Quality Products The Unique Design Makes A Deep Resonant Sound Reducing Overall Weight for Top Performance to Obtain Max Output Specification: Color: Same as Pictures Material: Stainless Steel Length: 260mm Inner Diameter: 38-51mm(1.5-2inch) Fitment: The Universal Muffler can be used for Dirt Bike, Street Bike, Scooter, ATV, Quad and Any Other Bike with Pipe Diameter 38-51 mm. Package Includes: 1 * Exhaust Pipe and Hardware as Pictures Installation NOT Included