Euro 4 homologated. This is a Cobra USA manufactured exhaust that is modified by Thorcat to EC regulations with an EC / ABE approved cartridge baffle. Catalytic converters are installed on Euro 3-4 models. This makes the Thorcat-Cobra a 100% legal exhaust system. The EC / ABE certification is valid for unmodified stock bikes, for the specific models and model years as mentioned in the product description. This system combines the PowerPort Duals head pipe design and the Speedster design for a sleeper style with a hidden kick. Full length, 2.5-inch, single heat shields prevent blueing issues and give a full seamless appearance. A set of chromed Fishtail tips finish off the rear in a classic stretched style for fantastic looks. If beauty would hurt, you'd scream! Note: Euro 4 certified exhausts comes with EC / ABE approved non-removable cartridge baffle and catalytic converters. Note: Every Thorcat exhaust, and the individual components used for approval, come with a unique serial number. You must provide the bike's VIN number (frame number) to register your exhaust system in the Thorcat register; a document on how to do this is included. Once registered, you will receive a Thorcat ID card that can be used to prove the legality of your exhaust system.