I talked to the service manager for Champion Yamaha in Newport beach/Costa mesa. Here the deal. Yamaha will warranty the tank if your in the first year of ownership. Mine is a 2000. No warranty. If your a 2001 or 02, you can still get your tank warrantied, that is, if your nice to your service manager and you dont go walkin in there with huge chip on your shoulder. Im blown away by the fact that Yamaha would warranty anything on a competition desigated motorcycle in the first place. Oh well, to late for me, but the clarke tank is only 172 shipped to my house instead of the 325 for the yamaha tank.