[cmc72_2000]

does a 39 tooth rear sprocket require a longer chain if i use the stock chain & front sprocket? i have a 38 on and it seems like i have more room for larger sprocket but people have said a 40 won't work with stock chain. i'm really not looking to change the front to a 13, because i added 21 inch tires and i'm looking to compensate for the height change without changing my final gear rating. another words, when i put the larger tires on i lost some accelleration and i'm looking to get back to the old (stock) gearing/acceleration. make sense?

 

[predator03]

I couldn't get the 40 to fit on the stock chain. That chain was brand new, and no stretch in it, so maybe it would after riding it for a bit. Also, it rubbed a little on the chain guard. I don't think it affected the performance any, and didn't seem to wear on the chain. I did fit a 39 on it with no problem though.After playing around with the gearing, I like 13/39 the best.

 

[cmc72_2000]

cool thanx scott!