Mid-Drive Dual Power eKit 250/500W


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: https://www.gov.uk/electric-bike-rules.

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 our best selling kit and our favourite as well! This 250W/500W motor kit offers a great 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. Paired with the larger batteries, this kit is one of the best out there! 

The unique 250/500W system allows you to have a higher power option where it is safe and legal to do so while still maintaining the ability to use the low power option on the road for maximum efficiency. 

To fit this kit there are a few things we would need to check:
- The bottom bracket of your bike will need to be between 68-73mm wide in order to work with this mid drive, you will also need to consider space for the motor.
- The chain ring is 42 tooth so chainline will need to be fairly standard and the chain may need to be lengthened or shortened, also you can only use this as a 1 ring set up. 

What's included:

  • Mid Drive Brushless Motor (internal controller).
  • LCD Display
  • 42 Tooth Chain Wheel + Plastic Chain Cover.
  • 2 x Brake Levers.
  • Left And Right Crank Arms.
  • Speed Sensor + Magnets.
  • Waterproof Quick Release Cables.
  • Thumb Throttle (optional)

Battery Options

Frame Battery (charger supplied with battery

  • 36v/9Ah
    - 250w mode gives up to 30 miles range 
    - 500w mode gives up to 15 miles range 
  • 36v/15Ah
    - 250w mode gives up to 50 miles range 
    - 500w mode gives up to 25 miles range 
  • 36v/19Ah
    - 250w mode gives up to 60 miles range 
    - 500w mode gives up to 30 miles range 

Pannier Battery (Pannier rack and charger supplied with kit)

  • 36v/7Ah
    - 250w mode gives up to 20 miles range 
    - 500w mode gives up to 10 miles range 
  • 36v/11Ah
    - 250w mode gives up to 35 miles range 
    - 500w mode gives up to 20 miles range 

Bottom Bracket:
This kit will only fit 
68-73mm square taper bottom brackets and threaded bottoms brackets. 
If your bike has a 
Square Taper Bottom Bracket or a Threaded Bottom Bracket, this kit will fit your bike.

If your bike has a Press Fit Bottom Bracket, get in touch as this kit won't fit. We can recommend an alternative kit for you.