Bafang BBS02B - 500W Heavy Duty Mid Motor Conversion Kit - Electric Bike Conversions
Bafang BBS02B - 500W Heavy Duty Mid Motor Conversion Kit - Electric Bike Conversions
Bafang BBS02B - 500W Heavy Duty Mid Motor Conversion Kit - Electric Bike Conversions
Bafang BBS02B - 500W Heavy Duty Mid Motor Conversion Kit - Electric Bike Conversions
Bafang BBS02B - 500W Heavy Duty Mid Motor Conversion Kit - Electric Bike Conversions
Bafang BBS02B - 500W Heavy Duty Mid Motor Conversion Kit - Electric Bike Conversions

Bafang BBS02B - 500W Heavy Duty Mid Motor Conversion Kit


Motors above 250W

Please note a motor output exceeding 250w and speed assistance exceeding 15.5mph means it cannot be used on UK public roads without first obtaining type approval, insurance, tax, displaying a number plate and undergoing an MOT.

In the UK, only converison kits that comply with EAPC Regulations can be used on UK public roads without tax, insurance or registration. A conversion kit above 250W can only be used off-road on private land. 

You can find out more about EAPC Regulations here:

For the avoidance of doubt, you will be responsible for obtaining such type approval, insurance, tax, registration and MOT.

Please read before ordering

Once a kit has been fitted, a refund can't be processed as the item has been used.

Please contact us before ordering to make sure the kit will work on your bike.

Cyclescheme Vouchers

Cycle to work Scheme

The Cycle to Work Scheme is a Government-backed initiative to encourage people to cycle to their place of work, and consequently reduce environmental pollution. It's also a way for you to save money on the cost of your cycle and spread the cost over a number of months, through your pay packet.

How do I get a conversion kit through Cycle to Work?

If they haven't already, your employer needs to register with one of the Cycle to Work Schemes in order to offer this benefit to their employees. Once they are signed up with a scheme, the employee needs to find a cycle retailer who is also registered with that scheme.

Electric Bike Conversions is registered with four of these schemes - Bike2Work, Cycle Scheme, Green Commute Initiative and CyclePlus. You'll see our name listed on each of these schemes such as Earth Cycles or Bike Bros. These are other names we trade under, but we are the same company.

The paperwork required differs for each scheme and should be available from your employer or from the links below for each scheme:


Bike2Work Scheme

Green Commute Initiative - Our recommendation!

Cycle Plus

Once the necessary paperwork is completed you will usually be issued with a certificate by your employer or Cycle to Work Scheme that you can use to purchase the kit from us. Your employer pays for the conversion kit via the scheme and the scheme then pays us for the purchase once you have collected the kit and provided us with your certificate.

If the kit is being delivered or installed by us, we can receive the certificate digitally. We'll also sometimes ask for proof of ID, depending on the scheme. The cost of the bike is then deducted from your salary over a period of time, but as you don't pay tax or NI on the income that's deducted, you make a saving on what you would pay if you purchased outright. This saving will vary depending on which tax band you fall into!

Due to the cost of running the Cycle To Work Schemes we have to add a 10% fee on top of the kit price, otherwise we cannot afford to be apart of the scheme. Sorry for the inconvenience.


This is the kit for those who are after an off-road focused high powered conversion kit. This mid-drive kits provide powerful ebike performance while maintaining the original pedaling enjoyment. With an integrated speed sensor, this mid-drive motor is compatible with standard bikes. This model of Bafang BBS02B output 80nm or torque. These motors are regarded as the very best in the EBike world. Extremely quiet and robust. Fully waterproof and internally lubricated within sealed casings.

All you have to do is select through to the options below we will pair up the correct batteries to each motor system. With your chosen specs we take care of all the important parts and we build the perfect kit, tailored for you. 

More torque than any other

Whilst there are higher-powered hub drive units available, nothing beats the hill climbing, wheelie-popping direct power of the mid drive. To tame the torque this kit includes the patented ‘Gear Sensor’ from Agentura REPRO by default. With other BBS units this is optional however because of the high torque of the BBS-HD, this is mandatory otherwise your transmission will be toast after 1 ride. The Gear Sensor system is easy to install and momentarily inhibits the power from the motor for just long enough to gear shift. 

GearSensor is the undisputed authority on design and development of this device which solves a common issue that all mid-drive electric bike drive systems are prone to. Agentura Repro has developed a GearSensor for derailleur and internally geared transmissions (select which below) that senses shifting and sends a signal to the BBS drive that inhibits the power for the perfect amount of time required for a complete shift. The GearSensor works reliably on every shift so you don’t have to think about coming off the throttle or ‘blipping’ the e-brakes.

Battery Options: 

  • 48v 13aH Frame Battery   -  Approx 25 miles per charge
  • 48v 17aH Frame Battery   -  Approx 35 miles per charge

6 Month Warranty is for manufacturing defaults and does not over miss use or accidental damage - Please keep this in mind if you live far away from our Guildford workshop. These units are extremely strong and robust and will not let you down unless abused. We undertake warranties here in the UK.