i wouldn't of thought so mate. its proberly just the cable come off the back of the speedo or the little plastic drive peg in the speedo end of the cable has broke. mine has done both of these before and it a pain in the rear to do as you gotta take most of the dash out to see what you are doing. to check and replace a cable is far cheaper than a new cog box........... but it does give you an excuse for a six speeder