GPM Racing Hardened Steel #45 Front Differential Pinion Gear - 1pcs for Traxxas 1/7 Unlimited Desert Racer-85076-4 (UDR1200SF/G2)

Technical summary

Precision-machined front differential pinion specified for the TRAXXAS UNLIMITED DESERT RACER platform, model UDR1200SF/G2. The component is intended to replace the OEM front pinion and to sit within the front gearbox assembly.

Materials and performance: fabricated from hardened steel #45 to provide higher resistance to surface fatigue and abrasive wear. The reduced gear clearance inherent to this part supports improved contact patterns and steadier torque transmission through the front differential under normal operating loads.

Service notes: installation requires full access to the front gearbox; standard disassembly and reassembly procedures apply. After fitting, adjust gear mesh and check for correct tooth contact pattern and endplay. Supplied as a single pinion for maintenance and light performance refinement of the front differential.

Contents: Pinion Gear 1 pcs.

What machining tolerances should I expect?

The pinion is produced to precision CNC tolerances for consistent tooth profile; verify mesh visually and with a feeler during setup to ensure repeatable contact patterns.

Recommended lubrication and break-in procedure?

Use a quality gear grease suitable for metal gears and run the diff under light load initially to allow mating surfaces to seat evenly. Recheck mesh after break-in.

Is replacement of bearings advised at the same time?

Inspect bearings and mating gears for wear; replacing worn bearings at service can preserve correct mesh and prolong component life. 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.