ENDURO SENDERO Upgrade Spur 89T Hardened Steel ES089TS by GPM  [ES089TS]

Hardened 89-Tooth Spur for SENDERO

This 89-tooth RC spur is specified for the ENDURO SENDERO Trail Truck and carries the model ES089TS. Machined from hardened steel #45, it is intended as a direct replacement to provide increased drivetrain torque without swapping the motor pinion.

The spur installs adjacent to the motor gear inside the transmission; confirm correct mesh and suitable backlash at installation. Increasing from stock 87T to 89T yields a modest boost in low-speed pulling capability and alters drivetrain load characteristics, so check mesh, set screws and bearings following the first run.

This is a practical choice for trail and technical crawling where a more robust steel spur or a slight torque advantage is wanted while retaining your current gear ratio.