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

89T Hardened Spur for ENDURO SENDERO

This RC-scale 89T spur gear is produced for the ENDURO SENDERO Trail Truck platform and carries part number ES089TS. The gear is machined from hardened steel #45 and serves as a direct-replacement upgrade to increase effective drivetrain torque without altering the motor pinion.

The spur fits beside the motor gear inside the transmission, so verify mesh and backlash during installation. Moving from the stock 87T to 89T gives a modest low-speed torque increase and slightly higher drivetrain loading; adjust pinion mesh and recheck set screws and bearings after the first short run.

Fit this spur when you want a small gain in crawling pull or a tougher steel drive gear for trail and technical use while retaining your existing motor gear ratio.