TRAXXAS MAXX Precision Rear Ring & Pinion Set Hardened Steel #45 TXMS1200RS by GPM  [TXMS1200RS]

Rear differential ring & pinion kit

This 3pcs aftermarket differential gear set is an RC-scale transmission upgrade intended for TRAXXAS MAXX monster truck differentials. The kit replaces the stock rear ring gear and pinion with hardened steel #45 components and includes a stainless steel pin to retain the assembly.

In practical terms the hardened #45 steel parts increase wear resistance under repeated loads, and the tighter manufacturing tolerance reduces gear lash so the drivetrain delivers power with fewer shocks and more consistent engagement. This is relevant when tuning diff preload, selecting gear oils, or diagnosing drivetrain noise.

Installation notes: remove the differential case as per your chassis service procedure, swap the ring and pinion, verify pin alignment and endplay, then check mesh and rotate the assembly by hand before reassembly. Use appropriate threadlocker or retaining methods compatible with RC parts if required by your chassis service practice.

The TXMS1200RS kit provides a direct replacement geared toward smoother rear differential performance on TRAXXAS MAXX monster trucks, useful for hobbyists focusing on drivetrain durability and consistent gear engagement.