I am riding mountain bikes and maintaining them myself since the mid- late ‘90s. There is nothing a pro mechanic does that I don’t. That said, I could not identify why that thing was sold to me as FACTORY SECOND. Maybe a weld that had a very minor imperfection if you’re looking for something? Or just ER’s way of saying factory sale such as everyone else these days?
Pre-assembly was good and screws to torque specs.
A $10K bike does not come pre-assembled any better.
If there is one thing I would change is to remove the clear coat. This is a kids’ bike and will be thrown around and against things. Raw frames can easily be refreshed with a Scotch Brite sponge. That said, aside other things such as the belt drive that thing is already superior to other kids’ bikes just as all others are painted and will look awful after a while.
Weight is perfectly reasonable for a 4 y/o.
Would immediately buy again.