This is our 2021 (Gen1) UU1100 drivetrain. This drivetrain requires a 52V battery which does NOT come with this option.
24" Front wheel
24" Rear wheel with UU1100 motor
Controller (uses XT-60 battery connector)
Pedal Assist Sensor (for square taper style bottom bracket)
Why would you not post about axle nut sizes when there is so many people online looking for them for your product?