I ran into the same problem with mine, some locksmiths can remake a red key one here locally charges $350 to remake you one & $40 to copy the black one.When did Ducati start using the Red key as the master key? I'm looking at an 02 Monster 620 and the seller does not have a red key, only the black. How much for red key and is it even worth considering the bike the if the seller does not have the red key? The title is clear.
All they need is the instrument cluster, if you can't find one locally maybe these guys can help you out http://www.soslock.com/