Cytronex: Hidden Power
Cytronex: Hidden Power
Get there fast with the world's lightest electric bike...
An electric bike from Cytronex looks and handles like the same bicycle without power assistance. View our Electric Bikes
View our Electric Bikes
View our Electric Bikes
C1 Electric Cycle Power

Lightweight electric bikes from Cytronex

An electric bike from Cytronex looks and handles like the same bicycle without power assistance. The battery looks exactly like a water bottle, the electric hub motor is about the same size as a bicycle dynamo and there is no mess of cables and switches. Yet press the Boost button at the bottom of a hill and other cyclists will disappear into the background.

Weighing as little as 12.9Kg for the Cytronex Powered Cannondale Super Six electric bicycle and having a front hub motor with the power of an additional rider, Cytronex silently flattens hills and cruises through headwinds.


A Cytronex electric bike is the ultimate commuter bicycle - the fastest on the road and also the lightest full size e-bike. What's more Cytronex is a British design and is assembled in Winchester, UK. The launch of the retro fit Cytronex C1 electric bike conversion kit is scheduled for 2014.  Sign up for our mailing list, and we'll let you know when it is available!


The lightest touch on the rear brake will stop the Cytronex Electric Power Assistance instantly. And because Cytronex electric bicycles are designed for personal transport day or night, every Cytronex water bottle battery has a high efficiency switching regulator which maintains optimum stable power to the ultra bright Busch & Muller electric LED bicycle lights. Cytronex is designed with reserve power for lights so when your assistance runs out there is a significant reserve of power for bicycle light to get you home safely.


We fit the world's lightest electric bicycle power assistance system to the best bicycles from Cannondale, GT and Merida. See our range of electric bicycles.


Why not come to Winchester by train, test ride a lightweight Cytronex powered electric bike and enjoy a day or afternoon sightseeing in the ancient capital of Britain. Winchester is only 1 hour from Waterloo by train and we are two minutes walk from the station. We have two showrooms which are stocked with a wide range of Cytronex electric bicycles. Our friendly staff will be delighted to provide a demonstration of the Cytronex concept.

Before you come it is a good idea to check that we have your chosen frame size in stock, please Book A Test Ride or call us on 01962 866122.


  • Video from Home of the Future

    Cytronex electric bikes feature on Channel 4's Home of the Future

    Leon gets to cycle like a pro in an uphill climb against professional road cyclist Scott Thwaites of the Edura Racing Team. The Cytronex Electric Powered Cannondale Bad Boy Fatty Headshock is the featured electric bicycle. Watch video...

    Home of the Future

  • Ortis Deley riding Cytronex Powered Super Six Electric Bike on The Gadget Show

    Cytronex races top cyclist on Channel 5's The Gadget Show

    A special episode of the Gadget Show broadcast with a "beat the pro" challenge where presenter Ortis Deley races professional cyclist Russell Downing (winner of the Tour of Ireland) on a Cytronex electric bike.

    A brand new model was launched for the occasion, the world's lightest electric bike - the Cytronex Powered Cannondale Super Six Ultegra, a carbon framed bike using the legendary Cannondale Super Six frame. Click on the image below to see how he got on in the gruelling 2 mile uphill race on Holme Moss, one of the countries toughest hill climbs. Watch video...



New concept store opens

The new Cytronex Concept Store in Winchester - Open now!
We have just opened our first concept store in Winchester! Come down and see our full range of electric powered bicycles. We are also stocking clothing by Polaris, Ortlieb luggage and many more. We also have full workshop facilities for service and repair by our Cytech2 trained mechanics for electric or non-electric bikes.


2015 Models

2014 Cannondale Quick Carbon 2 - Soon with Cytronex Power!
With the new bikes for 2015 just being announced, Cytronex will be adding some exciting new models to our range of electric bicycles. This is a preview of the Cannondale Quick Carbon 2 which will soon have Cytronex assistance and could be arriving as early as September. If you would like to arrange a test ride of this or any other electric bike in our range just contact us at Email us or phone us on 01962 866122.


New Reviews!

Your feedback is very much appreciated and we enjoy receiving comments from people who have bought a Cytronex electric bike. We’ve published a selection of the reviews and testimonials here.


Workshop servicescytech

Cytronex customers are often commuters who cover a serious mileage and need their electric bicycles well maintained. As we build our Cytronex electric powered bicycles on site we have a workshop which is extremely well equipped and all work is carried out by our Cytech qualified mechanics. We also provide high quality servicing for unassisted bicycles too.


The World's lightest electric bike!

Cytronex Powered Cannondale Capo electric bike
At an incredible 13.6Kg including the bottle battery, the Cytronex Electric Powered Cannondale Capo is the world's lightest electric bicycle, after only the Cytronex Powered Cannondale Super Six. The light weight allows an excellent power to weight ratio and makes it the ideal fast commuter bicycle for use in towns and cities. There is only one button to think about and no gears so you can concentrate on the road whilst Cytronex senses your speed and provides power to match for fast acceleration and excellent range. To see the review by Wired Magazine click here, full review also available from A to B – click here for details. Electric bicycles never looked so good.

Latest Independent Review

Stuff Magazine - Cytronex Powered Cannondale Synapse
"A serious road warrior with added power. What's not to like? 5/5"
Electric Bicycle Test
Stuff Magazine Logo
View all Reviews and Articles

Cytronex Powered Cannondale Capo highest rated E-Bike in Wired Magazine review

The December '09 issue of Wired Magazine features a comparison of 4 electric bikes, with the Cytronex Powered Cannondale Capo pedelec being compared to the new Wisper 906, Urban Mover UM36X and Infineum Extreme. The Cytronex Capo was rated highest ("Excellent" - 8/10) and led the field in both acceleration and top speed even though it is a single speed bicycle! WIREDYou can see the review by clicking here (PDF 2.32Mb).

Top speed 26.1mph
Time from 0-15mph 5.42secs

A review of two Cytronex Powered Electric bicycles by the Southern Daily Echo

Daily EchoIn August Southern Daily Echo reporter Peter Law tested the Cytronex Electric Powered Cannondale Synapse and the Cytronex Electric Powered Genesis Day One electric bikes and wrote "Going up hills is absolute doddle, even on a single speed bike, and I barely broke out in a sweat as I tackled the hilly terrain of Winchester". You can read the full Daily Echo review and see a video of his test ride here., BikeBiz and BikeRadar

News of the lightest full size ebike in the world is spreading fast. The Cytronex Powered Cannondale Capo, weighing 13.6Kg, appeared on the front page of 3 UK cycle websites:, BikeBiz and BikeRadar.

BBC Radio Solent


Play audio...(pop-out) Read transcription...

BBC Radio Solent broadcast a feature on Cytronex by Nadine Dukeson. She test rode the Cytronex Powered Ridgback Cyclone, commenting that she felt like she was flying! Click the play button above to listen to the broadcast, or download it to your computer.

Why not listen to the interview while you browse the rest of the site?

Cytronex Electric Bike on BBC 1

Cytronex appeared on BBC1 in 2012 when Mark Searles was interviewed for a story about interest rates.

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