For this review of the best electric bikes, Consumer Reports tests each electric bike for its range, comfort, usability, and ...

The Stark Varg boasts an 80 horsepower motor, with GPS speedometers showing speeds in excess of 100 mph on the open road.

A Class 1 electric bike requires you to pedal to engage the motor and keep the bike moving. Once the motor is engaged, it "assists" in pedaling up to 20 mph. Of course, you can go faster on these ...