Increased power and torque through the whole rpm range, especially in mid range and top end Weighs over 40% less than the standard exhaust and offers easy-to-fit installation The deep racing sound perfectly matches the bikeÆs sporting abilities For perfect performance, throttle response, and durability, special mapping developed by Akrapovic in collaboration with Rapid Bike by Dimsport is recommended. EXHAUST RAC SS YAM R1 20