The GPM UDR037 steel center front drive shaft is supplied as a pre-assembled unit to replace the front driveline component on TRAXXAS Unlimited Desert Racer models. Designed with large press-fit drive pins that mesh with steel drive cups, this shaft focuses on reliable torque transmission and serviceability under heavy use. Installation is simple thanks to the included hardware, and the use of screw glue on the M4x2.5x12.5 pin is recommended to secure the assembly for track or off-road conditions.