TRAXXAS Compatible 35T Spur & 20T Input Gear XRT3520S for XRT/X-Maxx by GPM  [XRT3520S]

Hardened spur and motor input gear for TRAXXAS XRT 8S applications

This replacement gear kit is built for RC use on select TRAXXAS XRT and X-Maxx 8S platforms. Primary gears are machined from 20CrMnTi steel and the package includes a 7075 aluminum fixed mount and bearings to create a three-point support that improves load handling compared to the factory two-point arrangement.

The assembly pairs a 35T spur with an M1.5 module to a 20T transmission input (motor) gear with M1.0 module, using an integrated motor-gear and input-shaft layout that removes the need for the older 2.5mm locating pin. Manufacturer measurements show a 35T spur with a 6mm D-shaped motor hub opening, 14mm tooth width and about 55.4mm outer diameter, and a 20T motor gear with 1.0 module.

This kit is intended to reduce wear and stabilise gear mesh under heavy torque from 8S systems. Note the manufacturer states the part is not suitable for TRAXXAS 1/5 X-Maxx 8S Monster Truck-77096-4.

If you run high-power 8S builds and need better wear resistance and a firmer transmission mount, this GPM kit swaps in hardened 20CrMnTi gears and a 7075 mount to improve long-term durability.