Constructed from high-grade ultra-lightweight titanium with a weight savings of 70% over the stock muffler, the Grand Prix–inspired design has a smaller sportier appearance and that exhilarating Akrapovic sound to heighten the senses. It is made from race-proven materials and is a simple plug-and-play installation with remapping needed, and is designed for track use and markets where EC/ECE-type approval is not required. There are optional headers for improved torque and power from the mid-range upwards. If used with optional headers, remapping is required .For perfect performance, throttle response, and durability, special mapping developed by Akrapovic R&D in collaboration with our partner Rapid Bike by Dimsport has to be used. Please visit https://www.dimsport.us/en/rapid-bike/akrapovic/, where you can download the mapping. THIS PRODUCT DOES NOT MEET EMISSION COMPLIANCE REQUIREMENTS FOR STREET OR HIGHWAY USE.