Racing Line Exhaust SystemHas a lightweight carbon-fiber muffler outer sleeve, combined with stainless steel link pipes and headers and finished with a titanium end cap, to produce a system that is 2.6 kg (36.5%) lighter than stockFeatures a shorter muffler for an enhanced sporty look, which exits on the side of the bike for visual impactPower is increased by 3.3 kW (4.5 hp) at 9,600 rpm when compared in back-to-back tests on a MT-09 with a Racing Line (Carbon) exhaust and a standard stock exhaust systemSporty racing sound is perfectly tuned to the engine, designed for use on tracks and closed-course competition circuitsCompatible with Yamaha hard cases and center stand accessoriesWhen installing the Racing Line (Carbon) exhaust system the check engine light will appear, thus remapping the ECU is mandatory. 1861-1784 is required for installation.