3000W Rear Hub Motor E-Bike Conversion Kit

3000W is the top step in the range: 110 N·m of torque, over 80 km/h with the right battery and an efficiency of roughly 90.5%, meaning almost all the energy from the battery reaches the wheel instead of turning into heat. The 60A controller accepts any voltage between 48V and 72V. This is a kit for serious projects, not for a first conversion.

3000W technical specifications

Why the torque arm is mandatory at 3000W

At 110 N·m, no bicycle dropout can take the torque transmitted through the axle on its own, whatever the material. Without extra fixing, the axle spins in its seat – the phenomenon known as a spun axle – widening the dropout and destroying the frame, sometimes after only a few hard rides.

Both torque arms are included in the kit and must be fitted on both sides of the axle, without exception. Fitting takes 10–15 minutes per side and needs no special tools. At this power they are not an accessory but a condition of operation.

Why 3000W is rear motor only

A 3000W motor fitted at the front would send all its torque into the fork, a part designed to take vertical loads rather than twisting forces. The risk of fork failure is real and the consequences are serious at the speeds this kit reaches. At the rear, the torque is spread into the rear triangle of the frame, a far more rigid structure — which is why the kit ships exclusively with the motor in the rear wheel.

60A controller and 90.5% efficiency

An efficiency of roughly 90.5% means only about a tenth of the battery's energy is lost as heat. In practice that translates into better range from the same capacity, and into a motor that stays cool on long climbs. The 60A controller runs on the Hall sensors and switches automatically to non-Hall mode if a sensor fails.

What the 3000W kit does best

Choosing the battery

The kit ships without a battery. When ordering you can add one of the batteries below, chosen for this kit, all with a key lock and charger included. You can see more in the e-bike batteries category.

Recommended batteries for this kit

Warranty and spare parts

The motor carries a 24-month warranty and the electronic components 12 months. Spare parts and accessories are available in the eBike parts section. Compare every power option in the conversion kits category, from 250W up to 3000W.

Frequently asked questions about the 3000W kit