TRAXXAS Unlimited Desert Racer front drive cup hardened steel #45 by GPM UDR039S  [UDR039S]

Front drive cup for TRAXXAS UDR

This GPM UDR039S front drive cup is an RC-scale replacement part designed for the TRAXXAS Unlimited Desert Racer platform. The cups mount on both front sides of the differential and act as the interface between the driveline and the axle outputs, so correct fit and material choice matter for durability and smooth driveline behaviour.

The part is made from hardened steel #45 to address wear and fatigue that stock plastic cups can show under repeated use. The package includes drive cup 2pcs and stainless steel cap head screw 2.5x12 2pcs to secure each cup in place. These items are intended to allow a direct swap when the original cups show wear.

Installation notes: the cups install at the front differential outputs; verify seating and alignment, confirm screws are tightened to an appropriate snugness without over-torquing, and inspect for play after initial runs. For tuning and maintenance, replacing worn drive cups with hardened steel units helps maintain consistent driveline engagement during high-load or off-road testing.

This part is suited for replacing worn front drive cups on the TRAXXAS Unlimited Desert Racer to restore drivetrain reliability and reduce wear under regular hobby use.