[Brett636]

Its a scam, the cashiers check will be a fraud check. They are betting that the bank won't notice until they give you the cash. What happens is you wire the extra $$ back to them, and possibly even ship the bike as well. By the time that is done the bank finds out the check is a fraud and will come looking for you to get their money back. In the meantime the scammer has both the extra $$ and your bike.