Kits supplied are newer B version with dedicated light and gear shift sensor connectors

The Bafang BBS02B 48V 500 watt motor kit offers a good combination of strong torque, high efficiency with low power consumption and noise output. The mid drive motor transfers power through the bikes gears, meaning the motor can operate within its optimum RPM range which is ideal for hill climbing.

The Bafang kits can be fitted to standard bike frames through a simple installation process.

The Bafang BBS02B 48V 500W motor kit is basically the Bafang BBS02B 750W 25A motor kit which has been reprogrammed to 18A, meaning you benefit from the more robust 25A controller. Please note the motor casing is marked BBS02B 750W 25A.

Included Parts:

8Fun Mid Drive Brushless Motor (internal controller).
LCD Display C965 + Operation Button (options also include C961, Colour DPC14, Colour DPC18) .
Thumb Throttle.
46 Tooth Chain Wheel + Plastic Chain Cover.
2 x Brake Levers.
Left And Right Crank Arms.
Speed Sensor + Magnet.
Waterproof Quick Release Cables.
Fixing Plate.
2 x M33 Nuts.
2 x M6*12 Cap Head Allen Bolts.
5 x M5*10 Cap Head Allen Bolts.
5 x Self Tapping ST 3.9 Screws.


Voltage: DC 48V
Power: 500 Watts
Current Limit: 18A  (controller is 25A version, reprogrammed to 18A)
Motor Weight: 4.25KG
Controller: 9 Mosfet, Intergrated With Motor
PAS Sensor
BB Length: 68mm
Max torque: ≥120N
Max Efficience: ≥78%
Waterproof Grade: IP65

Bike should have standard bottom bracket not exceeding 73mm.

The kit is supplied with a 46 tooth single chainwheel, so if your bike has a front derailleur it will not be required.

The brake levers are cable operated, so will not be compatible with hydraulic brakes. We also stock brake sensors for use with hydraulic brakes, which are compatible with Bafang motor kits.

We add additional high quality Mobil Aviation SHC 100 Synthetic Red Lithium Grease to the secondary reduction gears before dispatching motor kits.

Kit is intended for off road use only as it exceeds the legal power limit of 200/250 watts

Motor kit comes with 1 year limited warranty.

Victor N.

Great motor. Bought and received in a few days! Solid and protective packaging and quick delivery. Review submitted 06/19/2018.

Robin S.

All I can say is wow! Fitted this to an old heavy hybrid, can use pedal assist and throttle at same time so best of both worlds. Mixed riding on roads and cross country trails averaged 15mph purely on throttle topping out at 31mph. Buy the gear shift sensor as a must, a decent draper crank puller, same for the bottom bracket, they are really tight in there, and the bafang tool. You'll also be advised to get a decent cable cutter for the gear cable. Excellent service from Eclipse, extremely well packed and good communication. Best thing I ever bought in my life, wish I'd gone for the 750 watt unit but having said that, the 500 is everything I had hoped for and more. Took about 4 hours to install. Would I use eclipse again, absolutely! Review submitted 07/05/2020.

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