CCC Racing Cannon Competition Bar for Husqvarna 3120, 3140 and big motors, RACE!!Designed in Collaboration with Cannon Bar Works over the course of 3 years, this is the ultimate 3120xp chassis racing bar. It was designed specifically for racing on the 3120xp, bored and stroked 3140xp (0 140cc) and all other race motors built on this chassis. The Roller nose is New Cannon proprietary. It can be used with . 325, 3 8", and . 404 pitched chain with . 050 gauge and a sprocket which matches your chosen pitch. WE HIGHLY RECOMMEND 3 8" or