FRONT AND REAR SPROCKETS. Motorcycle sprockets manufactured in one of the largest and most advanced factories in the world.. Through accurate machining and by using only the best grade of C45 High Carbon steel for rear sprockets and SCM415 Chromoly steel alloy for front sprockets, ensures Maximum Durability performance for both Drive chain and sprockets. Manufactured in the right way, by hobbing, machining and drilling. This is the only proven way to achieve the closest of tolerances and the best teeth profiles. Heat treated and hand finished to perfection, all sprockets meet or exceed the highest possible quality standards set for the motorcycle industry