I recently purchased a mission ordered the LCD with the bike just to get the 25mph option (40KMH). it definitely helps but the bike really needs more amps it cant climb hills well at all. I have a taller single speed rear freewheel on the way going to try that out if that doesn't help the bike may get swapped to a 26in setup with bigger controller and larger motor. If our new house wasn't in the hills this bike would be perfect but "unfortunately"  I am going to have to do some Mods lol.