GPM Racing Hardened Steel #45 Rear Differential Pinion Gear - 1pcs Set for Traxxas 1/7 Unlimited Desert Racer-85076-4 (UDR1200S/G2)

Precision rear pinion for UDR drivetrains

This replacement rear differential pinion is specified for the TRAXXAS UNLIMITED DESERT RACER UDR platform and carries model number UDR1200S/G2. It is intended for installation within the rear gearbox as a direct swap to the factory pinion to improve engagement stability.

Material and function: produced in hardened steel #45 to provide elevated wear resistance, the component reduces backlash by tightening tooth clearance which results in smoother gear meshing and more predictable load transfer through the differential.

Package contents: one hardened steel pinion and four stainless steel flat head screws 2.5x8 are supplied to match the standard rear gearbox mounting configuration.

Installation notes: install into the rear gearbox as the differential pinion, use the supplied screws, manually verify mesh and rotation prior to applying motor power, and inspect after initial running for correct seating and secure fastenings.

Compatibility and fitment details

This pinion is designed to fit the rear differential gearbox of the TRAXXAS UNLIMITED DESERT RACER UDR as a direct replacement item.

Included hardware and mounting

The kit includes one hardened steel pinion and four 2.5x8 stainless steel flat head screws for secure mounting to the rear gearbox.

Best practice for gear mesh

Set a minimal running clearance by hand, secure the screws, and validate rotation under no-load conditions before full-power runs to prevent premature wear and ensure consistent engagement. Write Product Review Please sign in your account before you can write any review. Sign In Close

Made to order: GPM Racing parts are shipped to us from GPM's factory, so please allow around 14 days for dispatch.