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Bafang BBS02 500W mid drive motor kit – Colour Screen – 48V or 36V

£439.00 inc VAT

The BBS02B 500W is perfect for those wanting to convert an existing 36V 250W bike to a more powerful 500W bike. Alternatively, if the BBS01b 250W is not powerful enough, but the BBS02b 750W is too much, this motor offers a compromise.

Please note that this kit is for the motor, screen, throttle, speed sensor and wiring harness. You will also need to choose a suitable battery if you don’t already have one.

Please view our batteries by following the links below:

48v batteries HERE

36V batteries HERE


The BBS02b 500W motor is available with both 48V and 36V options

A chain wheel gives you a higher top end speed, a lower number gives you more ‘grunt’ for off road or steep inclines.

Let us know what type of brakes you have. Integrated cable brakes are where the brake lever and gear lever are one unit (ie not separate components).

SKU: MBBS02500 Category: Product ID: 3825


The Bafang BBS02 500W is a popular motor for those wanting just a bit less power than the BBS02 750W.  It’s small motor that fits in front of your pedals, and is subtle in appearance. It provides powerful torque, high efficiency and low noise levels.  Please read out fitting guide here.

This is available in 48v and 36v versions – please pick.

Key information:

  •  18 amp controller (built into drive system) with upgraded IRFB3077 mosfets (ie reliable)
  • Replacement cable brake levers with motor cutouts (Hydraulic cutout sensors optional extra)
  • Bafang thumb throttle (may be used on both sides)
  • LCD Display – P850C – Full Colour
  • 44T/46T/52T chainwheel – you choose.
  • Replacement cranks (both sides!)
  • Speed Sensor and magnet
  • All required cables
  • Additional kit required to fit to 73mm bottom bracket is supplied

Can I fit this myself?

Read our fitting guide here. If you require tools to take off your bottom bracket, pedal cranks and maybe split your chain, follow this link to purchase all of the tools. You will also require a fitting wrench which you can add as an option (above).

Can I fit a 52V battery?

We would not recommend this. If you want more power – get the BBS02 750W.

Will the Bafang BBS02 500W motor fit my bike?

This motor is designed to fit bikes with a bottom bracket of between 67mm and 73mm. The inner diameter of the bottom bracket should be 33.5mm. Most modern bikes sold in the UK meet this standard (but please check).  We have a bottom bracket guide here.

What is the optional gear sensor  for?

The gear sensor interrupts the motor when you change gear, and gives a smoother gear change.

How about the brakes?

The kit comes with a choice of replacement brake levers if you have standard brake cables,  stick on sensors if you have hydraulic brakes, or a combination of both if you have integrated brake cable brake levers (where the brake lever and gear selector are integrated into one unit). No matter what type you have, they all cut the motor when you brake so that you are not fighting the motor when trying to stop. This is a very useful safety feature!


1 year warranty based on purchase date. Please return to us for repair or replacement.

UK Legal Status

This is for off road use only in the UK.

Additional information


Motor Type





Waterproof Grade


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