Racing Line Exhaust SystemFeatures The stunning sporty Akrapovic sound is ideally suited to the bikes racing culture Provides a weight savings of over 20% alongside increased power and torque gains Easy installation ECU remapping is required For perfect performance, throttle response, and durability, special mapping developed by Akrapovic in collaboration with Rapid Bike by Dimsport has to be used If passenger footrests are removed optional carbon fiber muffler bracket is