The rear wheel assembly with 500-watt hub motor for GOTRAX G4 & GMAX Ultra electric scooters is a 10-7/8" diameter self-contained drive system with no additional wiring to install or other modifications needed; just remove your existing front wheel assembly and replace it with the rear wheel and hub motor assembly, and attach the connector. It truly is that simple.

This motor/wheel combo uses a 10x2/54-152 pneumatic tire with a directional street tread. The axle, rim, pneumatic tire, inner tube, and 120 mm brake disc are included.

The hub motor/wheel assembly is an old idea that is enjoying a new renaissance of popularity with scooters such as the GOTRAX G4 and GMAX Ultra. Without a separate rim or other superfluous parts, these hub motor/drive wheel units allow lightweight power in a small package. Combined with 21st-century Lithium battery technology, the hub motor system has revolutionized the realm of electric scooters.

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