In the USA There are currently 3 class designations for eBikes: Class I, Class II, and Class III.​In most states, ebikes are regulated according to this 3-class system.

• Class I ebikes provide motor assistance up to 20 mph while the rider is pedaling. This is referred to as pedal assist, sometimes abbreviated as PAS.
• Class II eBikes similarly provide motor assistance up to 20mph but also are equipped with a throttle. Riders can choose to use either the pedal assist or the throttle.
• Class III ebikes provide pedal assistance up to 28 mph. Some Class III eBikes are also equipped with a throttle, but the throttle use will only assist the rider up to 20mph.

Our hub motor bikes (Alpha and Alpha S) are both Class I, whereas our mid-drive bikes (Centauri, Proxima, Sirius) can be equipped with either a Class I or Class III controller.

It’s important to understand the rules and regulations in your state or municipality to ensure you’re operating the bike in a safe, legal manner. See this guide from People for Bikes for more detailhttps://www.peopleforbikes.org/electric-bikes/policies-and-laws

The primary difference between the two motor systems is how and when each motor system provides assistance.

Our hub motor bikes (Alpha and Alpha S) use a wired bottom bracket with a cadence sensor. When you begin pedaling, the controller senses the pedals rotating and provides assistance based on the level selected by your handlebar display. This system is simple, tried, and true, though it can sometimes feel a little like you're being pushed from behind.

Our mid-drive bikes (Centauri, Proxima, Sirius) also use a torque sensor to engage the motor. This system is a bit more complex: both torque and cadence sensors work to measure your input and provide natural-feeling assistance. The harder you pedal, the more assistance will be provided by the motor! Our mid-drive motors have twice the torque and a higher wattage than our hub motor bikes.

Hub motors are great for riders on a budget or those looking to ride with less strenuous effort. Mid-drive motors are great for riders looking for a natural pedal feel that more closely matches an acoustic (non-e)bike.

Racks, fenders, and mirrors, oh my! We configure our ebikes with standardized component sizes and mounting locations so you can customize your ride as you see fit.

All of our ebikes can accommodate front and rear racks, fenders, different tires, handlebars, grips, stems, seat posts, saddles – you name it!

If you have a particular part you’re interested in fitting on your VVolt ebike, please reach out to us! We’re interested in helping you feel good on your bike and will do what we can to ensure your comfort, safety, and satisfaction.