Slip-Ons represent the first step in the exhaust system tuning process, and they offer a great balance between price and performance. Change the nature of your bike by adding more power, improved performance, and the unique Akrapovi? sound. Everything packed in stylishly designed Slip-On exhaust systems. The result of taking design very seriously is a beautifully crafted exhaust system with plenty of carbon fibre parts. Race-proven materials.If passenger footrests are removed optional carbon fibre muffler bracket is needed.FITMENT NOTICE FOR US MARKET: Exhaust system 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.