Optional available headers from the finest stainless steel offer an upgrade to a full system when used with the Akrapovi? Slip-On exhaust system. Let your bike stand out with more power, beautiful design, and the unique Akrapovi? sound.For perfect performance, throttle response and durability, ECU remapping is mandatory.FITMENT NOTICE FOR US MARKET: Exhaust system fits on 2019 S 1000 RR US model.THIS PRODUCT DOES NOT MEET EMISSION COMPLIANCE REQUIREMENTS FOR STREET OR HIGHWAY USE.