Compared across 2 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. As an Amazon Associate, Deal.ai earns from qualifying purchases.
It checks today's price at every store, compares the alternatives and answers in about a minute.
A rear-hub conversion kit that turns a 20" to 29" bicycle into a fast, high-torque e-bike. The gearless 2000W brushless motor runs on 48V, 52V, 60V or 72V packs and can reach about 40 mph in a 26" wheel. It comes with a 45A sine-wave dual-mode controller, a pedal assist sensor, a twist throttle and a brake lever, plus your pick of an SW900 LCD or a color UKC1 TFT display. It suits riders who want speed and torque and are ready to build the battery and wiring themselves; it is heavier and more involved than a geared 500W–750W kit.
In stockShips from Hong Kong SAR China · duties may applyReturn policy
Availability unknown
As an Amazon Associate, Deal.ai earns from qualifying purchases.
Store links may earn us a commission.
Lowest price we've seen: $209.99 on Nov 14 at Amazon. Tracked across 1 store since Nov 14.
| Wheel Size | Outer Tire Diameter | Rim Diameter |
|---|---|---|
| 20" | 495mm | 410mm |
| 24" | 600mm | 517mm |
| 26" | 650mm | 573mm |
| 700C | 690mm | 635mm |
| 28" | 710mm | 650mm |
This kit converts a standard 20" to 29" bicycle into an electric bike. It is built around a 2000W brushless gearless rear hub motor and works with 48V, 52V, 60V and 72V battery systems. Top speed is up to 40 mph (65 km/h), and varies with wheel size and terrain. The 65 km/h figure is given for a 26" wheel.
A 45A sine-wave dual-mode controller with an XT60 connector runs the motor. You choose either an SW900 backlit LCD or a UKC1 full-color TFT display. The SW900 has a blue/green backlit screen that shows speed, battery voltage, trip distance, assistance level and error codes. The wheel comes with either a standard aluminum bicycle rim or an MTX wheel.
The motor axle is 135mm wide, and a 7-speed freewheel is pre-mounted. If you add the 7-speed gear or washers, the rear fork needs more than 135mm of spacing. Match the wheel size to the size printed on your existing tire, and measure your rear dropout spacing before installing.
