im from florida also. i went down one up 2, btu i have a 600. your bik ewill come up. you just need to clutch em. if you cant do that, then forget about the sprocket and work on that for now. but if you can do that, then just order it online. i got mine for liek 50 bucks i think and size didnt matter. try kneedraggers.com or parts411.com