Motor Pinion 19T MG319T/0.5M 40Cr Steel Pinion for 0.5mm Module by GPM  [MG319T/0.5M]

Designed as a like-for-like 19T replacement, this motor pinion fits motors that use a 0.5mm module and have a 3.175mm pinion diameter. The round bore is secured with two 3x3 set screws for a simple clamp-style fit.

The pinion is made from 40Cr steel and finished with a hardened black surface to resist wear and to promote steady engagement within RC drivetrains. It is ideal for replacement or small ratio adjustments when specs match.

Before fitting, verify your motor's module is 0.5 and the pinion diameter is 3.175mm, and confirm shaft alignment so the two 3x3 set screws can clamp without inducing runout.