Yuba Mundo V4 with Bionx electric assist conversion.

We recently built a Yuba Mundo with an electric assist conversion from Bionx In Canada. It is an amazing system using a torque sensor in the motor to detect drive and apply power. An intuitive handlebar mounted controller lets you control everything including an amazing regeneration system that lets you recharge the battery during long descents. You can even use that as a stress training system.
The motor is almost silent in operation, it is a very impressive system that lends itself to fitting to a good quality commuter or mountain bike. We are now an authorised Bionx dealer so talk to us about fitting a kit to your bike.