Razor MX125 Dirt Rocket Dirt Bike Parts

This page covers parts for the Razor MX125 Dirt Rocket, an electric dirt bike. We carry the battery, charger and charging port, the motor, control modules, throttle and on/off switch, plus tires, tubes, wheels, chain, sprockets, brake parts, fenders and trim.

The MX125 runs on a 12 volt 5 Ah battery and charges with a 12 volt 1.2 amp coaxial charger (2.1mm ID). The motor is a 12 volt 100 watt unit with a 7-tooth #25 sprocket, paired with a 118-link #25 chain. Tires are 12-1/2" x 2-1/4" with E351 knobby tread, with a matching straight-valve tube. Many parts also fit the SX125, and the chain plate fits the MX350 and MX400. Some parts change by version, such as the V6+ control module, so check the version on your frame label. As an authorized Razor dealer, we supply genuine OEM Razor parts, with compatible alternatives on select items. Can't find your part? Contact us with your model number and a photo of the old part, and our team will help track it down.