So far everything i´ve read, is exactly the same... i ended up with the red one, only because thats the only color on the showrooms here... i didn´t really want to wait and order one... on the honda web site, you can read all about both the 03 and 04s.. it is a great bike though, i only with that those 2 extra valves on the cylinders would kick in a little quicker, maybe like 3000 instead of 7... i feel like i´m beating on it when i wait that long to shift... have fun