As far as e-Bike Class is concern, Class 1 electric-bikes are pedal-assist bicycles that provide power to the rider only when the rider is pedaling. These bikes have a maximum speed of 20 mph. Class 2 electric bikes, also known as "throttle-assist" bikes, have a similar power and speed capability as Class 1 electric bikes, but they also have a throttle control that allows the rider to engage the motor without pedaling. This means that the rider can use the motor to propel the bike forward, even if they are not pedaling. Class 3 electric bikes, also known as "speed pedelecs", are similar to Class 1 and 2 electric bikes, but they have a higher maximum speed of 28 mph. These electric bikes are designed for use on roads and some states are required minimum age and use of helmets, please make sure to comply with your local laws before buying and when riding a Class 3 electric bike.. Rocky Mountain offers mostly Class 1 and 2 e-bikes