Why does my k6 T Black ebike only top out at 18.7 MPH？

Hello, you can choose our website next time.

 You can try this solution to remove the speed limit:

1. Hold the brake handle.
2. Turn the throttle to the maximum. 
3. Turn on the key. 4. Turn on the screen switch and wait for 20 seconds.
4. The speed limit is successfully removed.Note: If you cannot turn on the device, please check the battery switch.