Carbon fibre muffler bracket (needed for mounting if passenger footrests are removed) is already included within the system.For perfect performance, throttle response and durability, ECU remapping is mandatory."
"355003
It's here! The RS-12 for the 2019-20 Yamaha YZ250F!After over three years in development and testing we are pleased to announce our RS-12 is here for the Yamaha YZ250F! With the help of incredibly talented factory...
It is EC/ECE type-approved. No remapping is required and it is easy to fit.Catalytic converter is included within the system.FITMENT NOTICE: This product can not be mounted in combination with optional Yamaha engine...