CYC offers an absolutely extraordinary bicycle electrification kit.But the transition from a classic bike to an electric car is not without consequences, legal in particular.It's one of the cycling trends of the moment.Kits for transforming a classic cycle (known as muscular) into an electric bike abound on the Web and lead to very contrasting results.In the plethora of available kits, the CYC X1-Pro is a UFO.Where the majority of serious kits offer a 250W to 600W motor, the X1-Pro provides almost ten times the power (5000W) and electric assistance up to 79 km/h.Therefore, it is obviously no longer a question of VAE.Read also: our guide to buying an electric bikeIndeed, in addition to their effectiveness, it is also necessary to inquire about the legality of this type of equipment.If nothing prevents you from changing your bike, you should know that beyond 250W or 25 km/h of assistance, your cycle will no longer be considered as a VAE, but as a speedbike.He will therefore no longer have the right to use the cycle paths and will also have to be the subject of specific insurance, the compulsory wearing of a helmet as well as a registration.The case of the X1-Pro is different again since its power and its maximum speed make it exceed the limits of the speedbike.Equipping a bike with this kit would simply turn it into a moped (like a scooter).Once these clarifications have been made, it is interesting to look at the design of the CYC engine.The kit from the Hong Kong company is a small block of 3.5 kg which is attached to the lower tube of a classic bicycle and which incorporates a specific crankset.This is where the motor controller is housed as well as a power sensor to provide progressive assistance.The user will also have to find a battery powerful enough to withstand the stresses of the engine, but in this respect CYC makes it easier for DIY enthusiasts by making its kit compatible with any type of battery from 36 to 72V.Finally, the basic kit includes a display to adjust the level of assistance and get an overview of its speed.The assembly of a CYC kit does not seem particularly complex, on the other hand it is necessary to be well aware of the legal constraints of this type of device before embarking on the electrification of a bicycle.For the rest, this X1-Pro is sold for just over 1000 euros, to which must be added the additional cost of a battery.Brompton P Line Electric: the king of folding bikes does not want to change formulaElectric bike: Shimano draws two new motors and an automatic transmissionElectric bike: Bosch adds ABS and anti-theft to its systemBrave's search engine saw usage grow 5000% in one year