Keep in mind that Kawasaki geared this bike the way they did intentionally, aiming for the average rider in average riding types at average speeds. If you are that average rider, it will likely be perfect. If you are a racer gearing for a certain track, that's a different thing. If you are a stunter or wheelie-demon-in-making, you'll benefit from lower gearing. But for the average Joe Streetrider, major changes for harder acceleration amplify the amount of shifting you'll have to do (already heavy on a 600 vs. bigger-bore bikes), and also your straight line run speeds. You may get off the line quicker, but you're going to lose out once the stock geared bikes get wound out. Even the best shifters in the world will lose SOME time tappin through the gearbox. (Again, not talking about gearing to suit a track...)