TRAXXAS UDR Hardened Steel Differential Ring Gear #45 UDR1200S/G1 by GPM  [UDR1200S/G1]

UDR ring gear replacement and upgrade

The GPM UDR1200S/G1 ring gear is a scale replacement made for the TRAXXAS UNLIMITED DESERT RACER driveline. It locates in the front or rear gearbox to transfer torque from the bevel pinions to the differential assembly.

Constructed from hardened steel #45, this component delivers improved wear resistance over standard steel gears. The increased hardness and tighter manufacturing tolerances are designed to reduce backlash and promote a steadier mesh under load.

Install this part as a direct replacement or when you want to refine drivetrain durability and feel. Verify tooth count and clearance before fitting, then set gear mesh and differential play after assembly to avoid early wear.

A no-nonsense scale replacement aimed at better gear engagement and longer component life in TRAXXAS UDR gearboxes; correct mesh and fitment checks are essential on installation.