Just tie down the EX in your truck or trailer.
As far as it messing up your tranny, it will only happen if the quad is not tied down and is rocking back and forth. You can leave it in gear, just make sure that it does not move at all. I leave both my quads in gear during transport or when i just get off for a rest and nothing has happened to the trannies. Like i said, it's ok to leave it in gear, just tie the quad down real good so there is no rocking back and forth on the gears.

 

well does anyone know how to actually tighten the parking brake because im gonna be transporting my quad in my truck but its an explorer sport trac and the truck bed it shorter so the back wheels will be on the gate and im gonna tie it down but just to be safe ill keep it in first gear. Ill leave the tranny as a back up. ill lose the tranny before ill lose my bike falling out the back lol.. but yea anyone know how to tighten it??