not 100%sure what u mean there but if you meen the bolts holding the rear sprocket it there countersunk. I can shorten the chain no problem.

well how much for a set and chain standerd size?

hey guy, i am in need of some new Sprockets fro my bike its an ar, are the Sprockets the same from the mk3 and the ar? thanks and also whats the best sizes for road use.

thanks.