Yamaha R6 Race Bellmouth set. These are a 3D printed set in a nylon / carbon material which are a dimentional direct copy of the yec kit bellmouth set which sell for crazy money of over £800. They come complete and ready to bolt in and give the same top end power gain as kit . There are 2 versions the first for std motors and the second for tuned motors.The kit contains the bellmouths and assemblies themselves and also the the extensions for the top movable bellmouth the same as as the yec kit version.