I cannot reach 20 mph using throttle only

Note: It is NOT recommended to overload the motor while going on a steep hill. This will wear down your controller and could damage it. We always recommend using pedal assist on hill climbs.

20 mph is the maximum throttle speed the bike will provide. Some conditions can result in slower throttle speeds as there is only so much power output available. For instance, climbing a steep hill likely cannot be done at 20 mph due to the power limit. The system will attempt to reach the desired speed but will consume more energy than tackling the hill at a slower, assisted pace. If on a flat road you are unable to reach an unassisted speed of about 20 mph, follow these tips:

• Check your tire pressure. The assist can cause us to forget about tire pressure as it can compensate for the drag. Your tire pressure should be around 30% less than the max pressure.
• Check your battery charge. While in high demand, the battery will provide enough power to move, but the power will be limited if the charge is low.
• Check your load. The more the load carried by bike (cargo, wind resistance, etc.), the more power your bike will require to achieve the desired speed. The system on the bike is set up to have a certain point where it will max out.
• Check your route. Conditions such as sand, hills, or bumpy roads will affect your maximum speed. Always use caution when riding in adverse conditions, as this will cause your bike to wear down prematurely.

 The throttle is a great feature to have on your bike, but it is still a bicycle, and the best output will be achieved by pedaling. For this reason, we offer to assist levels that will help you pedal comfortably with reduced effort.

You can find more information about traveling faster than 20mph using the throttle here

If the issue still persists, contact our tech support team for further instructions.