Euro 5 homologated. Replaces the oversized stock muffler of the stock 2-1 exhaust system. Stainless steel slip-on muffler with a 900°C heat resistant matte black ceramic coating. 101mm diameter. The V Performance designed sound reduction system allows the sound to be deeper; without losing the Euro 5 homologation. With Ergal (aluminum 7075) ''Rebel'' series end cap. Complete with service card which allows you; by accessing the portal on ''VPerfpormance.pro'' website; to download the approval certificate any time required. Note: Homologation is valid for unmodified stock bikes; for the specific models and model years as mentioned in the product description. Removing or modifying the standard Db killers will void the homologation.