i have a number of things wrong with the rear end of my quad. need a new rotor, pads, bearing carrier, axle and sprocket hub. i'm going all aftermarket and havent decided on which axle or carrier to get. my question is that i assume that you have to use your existing spacer that goes in the bearing carrier. mine is all chewed up from the previous owner and i am going to replace that too. i just want to make sure that it is something that doesnt come with aftermarket carriers or axles.