Stock Sprockets??
 

How many teeth are the front and rear? and what combinations do you reccommend to change to? I think I got my bike with different sprockets than stock on it. The Speedo is way off and I am not sure if thats why? But just got the bike two days ago. So not sure. Thanks for the help guys!

the speedo is off from factory i bet when it says your doing 90 your friends say your at 80. the stock sproket size is 16-41 and most people will say 15/43 is the best gearing.

Yeah I think I'm going to try the 15/43 combo when I run out of wear on my stock ones. Seems to be the combo most people agree on.

I'm also thinking of buying a speedohealer http://www.speedohealer.com/eng/faq.htm

i got the speedohealer i found a V3 at a locol shop for 80$ i love it and works with the added bonus of top speed recap