Originally Posted by wokeupspeeding
I do mostly highway riding, but I was thinking of getting a sprocket kit. Anyone know if it will make a big difference in fuel economy if I drop one in the front and add one in the rear? If it doesn't make a big difference I would like more "get up and go".
Dude you just bought your CBR600RR, the best 600 supersport of 2007, and you're already talking about wheelies, stoppies, riding only on the highway, and getting a sprocket kit. This isn't that kind of forum, and that's not what that bike is made for. Chill out, buy and wear all your gear all the time, take the MSF if you haven't yet, do some reading, and practice riding with proper technique.
That being said, a sprocket kit like you are talking about will REDUCE your fuel economy because to go a given speed you will have to be at a higher RPM. People do the gearing mods you are talking about to increase acceleration, and they give up top speed in return. Also, people will do a more dramatic gearing change for stunt bikes, like 2 down in front and 6 up in the rear, or something like that, because it makes wheelies extremely easy. You would need to make the front gear larger and/or the back gear smaller to increase fuel economy, but that will also decrease your acceleration, although it would give you a higher top speed. Also note that changing your gearing will make your speedometer incorrect and you will have to buy a speedo healer.