where can i get rear sprockets for rpm gearbox? also the front? i want 18-21 or 18-20, all i could find is 17 for the front.
also should i do the 520 or the 530 conversion?
i should of clarified, i am running a reverse box, probably 5.4 gear ratio, so i need a bigger front spocket.
i figured they were talking about a hub when the sizes were small sprockets, lol