13-Tooth Motor Gear MG313T/0.5M 0.5mm Module for 3.175mm Shafts by GPM  [MG313T/0.5M]

The MG313T/0.5M is a replacement RC motor pinion intended for motors that match the stated module and tooth diameter. Made from 40Cr steel, the gear is given a hardened black finish to help reduce wear and extend usable service life in typical hobby applications.

Geometry: 13 teeth (13T), module 0.5mm, motor tooth diameter 3.175mm, and a round-shaped motor bore. It uses two 3x3 set screws to clamp onto the motor shaft for simple mounting. Always verify your motor dimensions prior to purchase to guarantee a correct fit.

Mounting guidance: align the pinion so the set screws sit on a flat or keyed shaft portion, tighten the screws evenly and inspect the pinion-to-spur mesh to avoid binding. Swapping pinions alters the gear ratio and will change acceleration and top speed; use this component when refining gearing for on-track performance.