The GPM UDR039S hardened steel #45 front drive cup set is supplied as a durability focused replacement for the TRAXXAS Unlimited Desert Racer front driveline. Manufactured to improve wear resistance, the hardened steel cups reduce the likelihood of breakage under high stress and provide a more consistent drive feel during heavy use. Supplied with the matching stainless steel cap head screws, the set is intended as a direct durability upgrade for hobbyists prioritising stronger front-end components.