The bike feels solid and well built. Now for what I feel should or could be improvements There should be a full list of replacement parts online, guide online guide on how to use the LCD screen to make adjustments if available, the pedal assist keeps working after you stop pedaling which can be dangerous, the rear shocks are way too strong for average person, and either us a key to turn on / off or make it so the pass word would work I do not like the RF thing it does not work the first time you...