my buddie has a 05 636 basically hes going to make it a stunt bike cause he just picked up a zx10

he wants a vortex 53 tooth

but is our rear sproket a 110 -120? wat is it lol

and what kind of chain does he need?

thanks in advance!

 

I believe it's a 42 teeth rear sprocket stock. The chain maybe a 110-112 link #520but he'll need a 120-122 link with that rear sprocket.

 

i changed mine the other day went from 43 to a 47and a 120 link 520 chain but had to cut some links off