Excellence comes from paying attention to details. AFAM professional MX countershaft sprockets come with a unique design of self-cleaning mud grooves on both sides. No chance for dirt, sand or mud to adhere to the chain and damage it or –even worse- any gearbox component. In AFAM’s terminology “self-cleaning” doesn’t only mean a groove cut into the side of a sprocket, it’s engineered to be functional and effective.