Transform your bike into a high-performance eBike
Cytronex was the first conversion kit to win an Ebike of the Year award and currently holds 6 international patents.
As the gold standard in electric bike conversion kits, Cytronex is the most sustainable way to go electric - transforming your existing bike into a high-performance ebike that rivals the very best purpose-built models, and simply the best electric assistance for Brompton full stop! Smooth, silent and natural assistance whenever you need it, the British designed and built Cytronex electric bike conversion kit converts existing bicycles into proper ebikes, so you don’t need to buy another bike or worry about your ebike becoming obsolete.
Electrify more than one bike
Another unique feature of Cytronex is that owners can buy part kits – if you have another bike you’d like to convert you don’t need to buy another bottle and charger – reducing the cost by about half. We manufacture and supply Cytronex, so we keep a good stock of spare parts and supply times are usually short.
Patented Cytronex Gear Tooth Sensor
Designed like no other electric bike conversion kit and made in England. You won’t find any of the usual parts associated with Far Eastern kits, like plastic magnet discs, or brake switches and speed sensors. The patented Cytronex gear tooth sensor does it all, allowing highly responsive assistance in one robust and reliable solution that fits with two zip ties.
Cytronex Bottle with Twin Battery Packs
We even make Cytronex battery packs right here in Winchester, UK. The unrivalled Cytronex efficiency takes you a long way on a charge and there are two 99Wh battery packs inside each bottle (total 198wh) - a unique feature that allows Cytronex to be transported by air (subject to checking with individual airlines)..
Smooth, natural assistance when needed
Behind the simple one-button ease of use, is our sophisticated British electronics sealed from the elements with the two battery packs inside the bottle. It took years of development to achieve the smooth, natural feel of a Cytronex powered bike – to truly appreciate the difference, test ride other ebikes before you try Cytronex.
Everything you need in the palm of your hand
Wherever you are, the Cytronex smartphone App (IOS/Apple or Android) allows you to:
-
Change the available power levels on the fly – if you need just a little more, or a little less assistance to cycle with a friend or partner – set up a colour with the exact power you need.
-
Check the exact battery charge level and monitor charging progress from your phone. Particularly useful for long rides where you want to charge up over lunch or coffee..
-
View the manual or fitting instructions on your phone.
-
Use “Diagnostics” to send a diagnostic log which records events as they happen, enabling us to help customers anywhere in the world.
-
Make sure your Cytronex is always up to date by installing updates when you see a notification.
Award-Winning Electric Bike Conversion Kits
Cytronex has been reviewed by some of the biggest names in cycling. Read our full press reviews.
Cycling News: “Engineering done right”
Overall, there’s very little not to like about the Cytronex ebike conversion kit. It’s a well-thought-out design with quality engineering. It’s easy to use, comes at a fair price, and is backed by best-in-class customer support.
ebiketips: “The best lightweight e-folder out there”
The Cytronex for Brompton T Line has to be right up there on the list of the most exciting e-bikes we’ve tried here at ebiketips. It’s the combination of two superbly thought-through products, both designed and largely manufactured in the UK.
BikeRadar: “The Cytronex Kit is a very clever thing”
The Cytronex kit is a very clever thing, and the latest generation setup looks better than ever, with founder Mark Searles taking on board some of our suggestions from when we tested the kit a few years ago, such as anodising the bottle cage mount and some of the fittings to clean up the looks of the kit.
Bottle Holder
The patented Cytronex Bottle holder is made from marine stainless steel and securely clamps the bottle on your bike, simultaneously making all the electrical connections in one lockable lever action. Fits to the standard two water bottle cage mounting screw holes on the downtube of your bike.
Boost Button
Assistance turns on and off with a press of the button (and automatically off when freewheeling). Press on the right or left side to change up or down through the 5 power levels, which you can set to your exact requirements with the smartphone App. If you have lights – turn on your bicycle lights by pressing the right side of the button until two LEDs illuminate.
Front Hub motor and the Brand NEW Thru-axle rear motor
Cytronex now offer both front hub motors and the all new rear Thru-axle motor for 142x12mm hubs, both with 250W road legal power rating. All options are small and light, and spin like a normal wheel without resistance when the motor is turned off. The front hub motor fits standard 100mm quick release forks, with a choice of disc or V-brake, black or silver to match your rear wheel, a variety of rim sizes and styles to fit your bike plus UK/European specification (25Kmh max speed) and the USA version (20mph max). The new super-stealthy rear hub thru-axle motor is available in UK/European and USA versions in black disc brake version to fit a 142mm rear axle spacing (12mm axle) and can be configured by us to for 10, 11 or 12 speed depending on bicycle gear type. The tiny but powerful Brompton motor is made to fit Brompton forks and available in black or silver.
Front Hub
NEW Rear Thru-axle
Charging your ebike kit
Also unique among ebikes, we offer a choice of our ultra-fast charger or our new Micro Charger which is so small it will fit in a bicycle seat pack. From empty, the Fast Charger will charge your bottle to 80% in about 1 hour and the Mini Charger will charge to 80% in about 2 hours.
Whichever charger you choose you can extend your journey by topping up at lunch or coffee and you can monitor charging progress from the App on your phone - so you don’t have to leave your seat until you have enough charge for your journey.
