Inlet diameter of 51mm, can be continuously reduced to 38mm with an adapter (included). Adapter for manifold connection 61mm available separately e. Overall length 450mm, silencer length 250mm, height 120mm, inlet diameter 51mm.Important: This is a universal article, the models listed are only examples. Please use the dimensions and pictures to check whether the exhaust fits before purchasing. This item is in the category "Vehicle Parts & Accessories\Motorcycle Parts\Exhausts & Exhaust Systems\Slip-On Exhausts & Silencers". The seller is "motea-uk" and is located in this country: DE. This item can be shipped worldwide.