You have a plate and you got a motorcycle, they are supposed to stay together but the rigor of off-road riding often take a toll on that administrative requirement.
 
Lost your plate, the bolts or both?!
This basic kit includes four bright zinc-plated button head bolts and washers, providing a clean and polished look to your license plate. The addition of nylon locking nuts ensures that your license plate stays securely fastened, even under extreme vibration.
 
This is a pack of 4 bolts assemblies, so you should be good for 2 bikes as they often only use 2 bolts on the top of the plate.