ive got a f4i... looking for imput on how big to go with the rear sprocket...i like to drag race but dont want to sacrifice too much top end...im torn between a 50 and a 51 tooth...

 

with that kind of sprocket size, you will lose way too much top end. You will lose roughly about 10-15 mph on the top end according to this.

http://www.gearingcommander.com/

this shows you everything from your top end and what the sprocket conversions will give you. hope this helps.

 

if you drag race a -1/+2 should fit the bill. And you really dont wanna go bigger than a 48t on the rear . All those will reduce the top end tho. but if you drag race you'll never hot top speed of the bike in a 1/4 no how.

n not to mention a 50 -51t you will be standing er up at will.

 

I got a 56 tooth rear! love it

 

you like wheelies n not top end tho huh lol

 

hmmmm....I did a -1 on the front and the bike tops out around 153 ish on the track. The front end comes up really easy in first gear. But who really goes 150+mph? lol

 

ppl who cant lean n think they gotta prove sumtin. Oh and or has a deathwish.