I have a BRAND NEW IN THE PACKAGES 520 conversion with vortex sprockets (polished rear) and RK rx-ring gold chain (GB520XSO). I sold my bike before I got a chance to install this kit. It is a 15 front / 45 rear tooth (will add a lot to your low end. If you like wheelies, this is for you) kit from "sum of all parts". They sell for $160. This is the cheapest you will find a quality kit (I checked everywhere). The kit will definitely fit 2003-2009 honda cbr 600 rr. It may fit more bikes, but this is what the kit specified. So that is all I will be sure of. I will meet the buyer somewhere close to the highway to make it easy. I do not want trade of any kind. The price is non-negotiable. I don't care if the kit is only worth $80 to you, or you can find a cheaper kit. These are quality parts, first person with cash, gets them. No holding them till pay day, or till the weekend. Bring good real cash (no counterfeit $20s) and you will have yourself a very nice setup for 25% off. Thank you

http://worcester.craigslist.org/mcy/1713218493.html

This is NOT mine, its a friends, Email him through the craigslist address