Optional available headers from the finest stainless steel offer an upgrade to a full system when used with the Akrapovič Slip-On __exhaust system__. Let your bike stand out with more __power__, beautiful design, and the unique Akrapovič sound. Optional headers fit also with Akrapovič standard (first fit) / BMW accessory Akrapovič silencer. For perfect performance, throttle response and durability, special developed mapping is recommended. __FITMENT NOTICE FOR US MARKET: Optional header fits on 2020 S 1000 RR US model. For 2019 US models, see products listed under 2018 model year.__ THIS PRODUCT DOES NOT MEET EMISSION COMPLIANCE REQUIREMENTS FOR STREET OR HIGHWAY USE. __power__ __ 7.6 kWat 8550 rpm__ __torque__ __ 8.8 Nmat 8450 rpm__ __weight__ __-5.2 kg__