For a mid-drive E-Bike, pictured here, the motor is positioned directly in-between the pedals at the bike’s bottom bracket. This ensures a low and central center of gravity, providing load balancing and creating the feeling of riding a traditional bike. Riders don’t feel the additional weight of the motor because of where it is positioned, giving a mid-drive E-Bike solid directional and tracking stability.

A difference riders can’t see, but will experience on a long ride – especially on hills – is that a bike with a mid-drive motor works synergistically with the bike’s gears for higher efficiency, which translates into longer riding range per charge. Like a car’s engine, electric motors like to spin fast not slow.

When the rider shifts gears to pedal at a natural bike-riding cadence (typically 50-100 rpm), the motor in-between the pedals is churning at an efficient rpm as well. For these reasons, Bosch uses only mid-drive motors.