TRAXXAS XRT 8S 1/6 4WD Steel Spur & Input Gear by GPM XRT3520S  [XRT3520S]

Steel spur and input gear upgrade for TRAXXAS XRT 8S

This aftermarket gear set is an RC-scale replacement designed for select TRAXXAS XRT and X-Maxx 8S platforms. The kit uses 20CrMnTi steel for the major gears and adds a 7075 aluminum fixed mount plus bearings to form a three-point support, which improves load distribution and transmission stability compared with the original two-point support design.

The set combines a 35T spur gear with M1.5 module and a 20T transmission input (motor) gear with M1.0 module in an integrated motor-gear and input-shaft arrangement that removes the older 2.5mm locating pin. Key measured values supplied by the manufacturer include a 35T spur with a 6mm diameter D-shaped motor hub opening, 14mm tooth width and approximately 55.4mm outer diameter, and a 20T motor gear with 1.0 module.

Use this kit where the goal is to reduce wear and improve gear mesh consistency under high torque from 8S-power setups. Note the part is specifically not suitable for TRAXXAS 1/5 X-Maxx 8S Monster Truck-77096-4 as stated by the manufacturer.

For hobbyists building or repairing 8S-capable TRAXXAS XRT and X-Maxx models, this GPM kit replaces the OEM spur and input gears with hardened 20CrMnTi steel components plus a 7075 mount to deliver improved wear resistance and steadier transmission under high loads.