If your board doesn’t go full speed and can’t go up hills, you are likely still in beginner or eco mode. Expert and pro modes unlock the full torque and top speed of the board. Check the manual to learn how to switch modes.
Our speed controller software has built-in torque roll-off. When you hit 2 mph below top speed in each mode, the torque gradually reduces to avoid a jarring deceleration when top speed is hit. Cell phone based GPS speed trackers aren’t accurate enough, so only seeing 18mph in expert or 20 mph in pro is common.