TRAXXAS Unlimited Desert Racer Front Drive Cup, Hardened Steel #45 - UDR039S by GPM  [UDR039S]

Front drive cup upgrade for TRAXXAS UDR

This GPM UDR039S front drive cup is a direct-fit replacement designed for the TRAXXAS Unlimited Desert Racer platform. The cups sit on both front differential outputs and form the mechanical link between the driveline and axle ends, so correct fit and material selection support longer life and consistent engagement.

The component is CNC machined from hardened steel #45 to resist wear and fatigue that stock plastic cups can show under repeated off-road use. The package includes drive cup 2pcs and stainless steel cap head screw 2.5x12 2pcs to secure each cup, allowing a straightforward swap when original cups become worn.

Fitment notes: install the cups on the front differential outputs, confirm correct seating and alignment, torque the supplied screws to a snug setting without over-tightening, and recheck for axial play after a short break-in run. Upgrading to hardened steel cups helps maintain consistent driveline engagement during heavy loads and rough terrain testing.

This component is intended to replace worn front drive cups on the TRAXXAS Unlimited Desert Racer to restore drivetrain reliability and reduce wear during regular hobby use.