This top-of-the-range full system is made from lightweight titanium that is over 40% lighter than stock, providing a weight savings of 3 kg, all designed to aid performance and handling. It is a direct derivative of the system the Red Bull Honda World Superbike Team is racing with. With a deep, sporty sound with improved power and torque through the whole range, this is simply the best option for the Honda CBR1000RR. Race-tested materials give the bike a true racing feel, with design, performance, and sound straight from the track. ECU re-mapping is required.If passenger footrests are not installed carbon fibre muffler bracket is mandatory (as shown on the product image).For perfect performance, throttle response, and durability, special mapping developed by Akrapovi? 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.