Akrapovic Slip-On - Short Hexagonal Carbon Fiber Muffler , Material: Carbon Fiber S-S6S05-TC 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 Akrapovic sound. Everything packed in stylishly designed Slip-On exhaust systems. Race-proven materials. THIS PRODUCT DOES NOT MEET EMISSION COMPLIANCEREQUIREMENTS FOR STREET OR HIGHWAY USE.