A Step By Step Visual Guide - Drive Sprockets This guide can be used for both replacing worn or broken sprockets with another plastic set and upgrading to a set of metal heavy duty sprockets. If you are upgrading to metal heavy duty gearboxes, we recommend that you also upgrade the plastic sprockets to metal sprockets at the same time. Upgrade to metal heavy duty gearboxes and metal sprockets is recommended if you intend to run metal tracks on your tank. . |