Join Date: Sep 2001
Location: Aurora, CO USA 80013
2004 GSXR 600 and 750
The 2004 changes to the GSXR 600 and 750 are evolutionary rather than a clean-sheet redesign. Lighter pistons, titanium valves, upgraded fuel injection system, and a beefed up frame are some of the most significant updates.
As the GSXR 600 was a bit down on power compared to the competition in 2003, I would say that these changes will only help keep the GSXR on par with the other 600's rather than jumping to the head of the class. I seriously doubt it will put down 110 rear wheel HP. Probably closer to 105.
Now, seeing as the same upgrades have been applied to the GSXR 750, that bike might put down nearly 130 rear wheel horsepower. That would be pretty fierce! If I was upgrading from an SV 650, I'd go with that 750.