X-Monster Pinion/Spur Gear Chart and Part Numbers

by | Dec 12, 2025

Xmonster X-Monster Below are the original and optional pinion/spur gear combinations with part numbers. The letters in the chart are the motor locating pin locations, if you change the gear size/tooth count, make sure you’re installing the pins in the correct...

XRT 8S Pinion/Spur Gear Chart and Part Numbers

by | Apr 1, 2025

The pin locations are different between the XRT and XRT Ultimate, please make sure you’re using the correct gearing chart. When you change the pinion/spur size, you’ll need to move the motor to the correct location for the new size gears. Do this by...