Well guys i changed out the sprocket and chain on the ZX10. I went with a renthal front 16t and a rear driven 41t sprocket. I do not like it at all! This is to much power on this bike and with the race map i am running this bike is ridiculous dangerous. This bike will wheelie with just a crack of the wrist in 2nd gear now. I took it for a test ride up the street and back and at any time in 1st gear i can WOT the throttle and spin the tire all the way up the street:scared.