The Akrapovič Racing system is designed for riders who demand maximum performance. Racing system is lighter if compared to stock exhaust system and features exceptional production quality, hi-tech materials and of course increased engine performance combined with pure racing sound output. The double-flow muffler is a unique combination of a hexagonal shape and a more classic rear endcap, finished with a durable titanium muffler sleeve and robust carbon-fibre clamp.For perfect performance, throttle response and durability, ECU remapping is recommended.THIS PRODUCT DOES NOT MEET EMISSION COMPLIANCE REQUIREMENTS FOR STREET OR HIGHWAY USE.