Feature 1, Universal design, inlet 63mm-outlet 80mm single out car exhaust pipe tail throat. 2, Special designed for making the exhaust smoother and improve the power. 3, Stainless steel material, anti-corrosion and wear-resistance. 4, Easy and convenient for installation, reliable and durable to use. 5, Wonderful replacement for the old or broken one, directly fitment. Features: Universal design, inlet 63mm-outlet 80mm single out car exhaust pipe tail throat. Special designed for making the exhaust smoother and improve the power. Stainless steel material, anti-corrosion and wear-resistance. Easy and convenient for installation, reliable and durable to use. Wonderful replacement for the old or broken one, directly fitment. Specifications: Condition: 100% Brand New Material: Stainless steel Inlet Diameter: 63mm / 2.5in (for 60mm / 2.4in exhaust pipe Outlet Diameter: 80mm / 3.1in Total Length: 170mm / 6.7in Color: Blue Fitment: Universal design fit for 3456 series 320li 535 modification Package List: 1 * Tail Throat 1 * Clamp Note: Please make sure the size of the product fit your car before purchasing. When the product is installed, it is necessary to cut the tail-throat and fix it with clamp.