The Track Day Slip-On Line for the Honda CBR1000RR-R Fireblade was specially developed for use on racetracks where lower noise levels are required. It is made from race-proven materials: titanium for the muffler and stainless steel for the link pipe with resonator. There are optional headers for improved torque and power, especially from the mid-range upwards.If passenger footrests are removed optional aluminium or carbon fibre muffler bracket is needed.THIS PRODUCT DOES NOT MEET EMISSION COMPLIANCE REQUIREMENTS FOR STREET OR HIGHWAY USE.