Developed from the (r)evolutionary Akrapovič concept and the company’s experience in top-level motorcycle racing, the all-new Akrapovič Evolution Line exhaust system for the Yamaha R1 is designed for riders that demand maximum performance from their motorcycle. This innovative muffler design is constructed from light-weight, beautifully finished titanium and high-quality carbon-fibre, which perfectly matches the sporty nature and lines of the bike. The Evolution Line system is designed to provide increased engine performance and higher torque to the machine, as well as that unique Akrapovič racing sound to make it stand out from the crowd. Exhaust can also be mounted on YZF-R1M model. Power +2.6 kW at 13700 rpm Torque +2.4 at 9900 rpm Weight -5.3 kg THIS PRODUCT DOES NOT MEET EMISSION COMPLIANCE REQUIREMENTS FOR STREET OR HIGHWAY USE.