Rear Drive Dual Power eKit 250/500W 250/1000W


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.


Are you torn between choosing a powerful kit and a road-legal kit? Well, have both in one!

The UK/EU regulations dictate that a kit must not exceed the rated power of 250W to be road-legal. Which is not great news for the thrill-seekers, power hungry among us who want to have the occasional fun off-road yet still be able to ride sensibly and legally on-road. A purchase of the common high-powered kit will come with its legal implications. On the other hand, the practicality of a road-legal kit means giving up the fun one could have off-road. So which kit do you choose?

With these new rear wheel kits, we had set out to resolve this very dilemma for its customers. We have developed a unique system that allows the user to swap between two modes depending on whether you are on-road or off-road, allowing you to unlock the full power where it is safe and legal to do so. This dual-mode system is embedded in the LCD Display which can unlock the full power of the kit using a special code (this can be obtained upon signing the de-restriction terms of use). Please note that this is not the same as a de-restriction switch which has been questionable from a legal standpoint.

We’ve gone to extraordinary lengths to ensure you get the most out of your conversion kit purchase, with the most robust and durable components today’s technology has to offer. All at arguably the best value for money kits found in the UK. 

The 500w and 1000w kits are switchable to 250w for road use and can be derestricted to full power for off road use. A standard electric bike kit from electric bike conversions consists of the following components: 

Electric bike kit specifications:

Motor: 250W-500W/1000W gearless, brushless rear hub motor
Usage: In 250w mode the bike can be ridden on the road. When in 500w/1000w mode you must be off road

Speed (250w): When in UK road legal mode (250w) the motor reaches maximum speed allowed by UK/EU regulation (i.e. 15.5mph).
Speed (500w/1000w): When in offroad mode (500w/1000w) the motor reaches maximum speed of up to 20mph.

Wheel size: 26inch, 27.5inch, 700c, 28inch or 29er
Frame Compatability: Requires 135mm clearance
Gear Compatability: 3, 6, 7 and 8 speed freewheels
Wheel material: Double walled alloy rim with reinforced spokes to withstand extra tension.
Wheel Colour: Black rim with silver spokes
Throttle: thumb type.
Brake levers: Electric levers that also cut the power when applied.
Brake compatibility: Compatible with both disc brakes and V-brakes

Battery Options

  • Pannier Battery: 500w 36v/11aH. Pannier rack supplied with kit 
    - 250w mode gives 40 miles range between charges
    - 500w mode gives 25 miles range between charges
  • Frame battery: 500w 36v/15Ah
    - 250w mode gives 60 miles range between charges
    - 500w mode gives 35 miles range between charges
  • Pannier battery: 500w 36v/17Ah. Pannier rack supplied with kit
    - 250w mode gives 75 miles range between charges
    - 500w mode gives 40 miles range between charges
  • Frame battery: 500w 36v/19Ah
    - 250w mode gives 90 miles range between charges
    - 500w mode gives 55 miles range between charges
    1000w 48V:
  • Frame battery: 1000w 48V/12Ah
    - 250w mode gives 60 miles range between charges
    - 1000w mode gives 35 miles range between charges
  • Frame battery: 1000w 48V/16Ah
    - 250w mode gives 80 miles range between charges
    - 1000w mode gives 45 miles range between charges

* Range between charges depends on terrain, weight of cyclists, frequent use of PAS, frequency of stops/starts, air pressure in tyres etc.

All batteries are easily detachable and come with a charger. The kit is a rear motor-wheel design, removing any issues around front fork compatability. The kit is supplied with a throttle.

Pedal Assistance System
A Pedal Assistance System is a device that senses your pedalling and makes your kit give automatic assistance, i.e. you do not have to press the throttle throughout your journey. This is included as standard with the 500w & 1000w kits.

Pedal Assist Sensor & Your Bikes Bottom Bracket:
This is the area where the pedals go through the frame. Our pedal assist sensors fit square taper bottom brackets and threaded bottoms brackets. 

If your bike has a Square Taper Bottom Bracket or Threaded Bottom Bracket, you don't need to do anything as this is the standard sensor size.
If your bike has a Press Fit Bottom Bracket, get in touch as this sensor won't fit. 
We can recommend an alternative kit for you if you want to use your bike on public roads. 

Use of the 500w & 1000w Mode
Please note that to ride the bike on the public highway the system must be set to 250w mode. We will send you instructions on how to select 500w or 1000w mode after you have signed and returned a Derestriction Agreement form to us - this essentially says that it is your responsibility to ensure that the correct mode has been selected for public highway use.

If you're not sure a Rear Wheel Kit is right for you, try our kit builder! It only takes a few minutes and we'll figure out the best kit for you

If you are looking for some help DIY installing one of these kits, have a look at our Wheel Hub Kit Installation Guides.