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.