Trek has launched a new e-mountain bike range, the Fuel EXe. The pedelec has a quiet motor, with a top speed of 20 mph (~32 kph) and up to 50 Nm of torque. A 360 Wh battery can assist you for up to five hours, and you can buy an optional range extender. The lightest bike in the series weighs 17.47 kg (~38.52 lbs) and is equipped with a display and handlebar remote.