Maybe this will clear up neysayers opinions of roller, caliper and bracket. My bracket, mounts to shock mount with a bolt from inside and a pin through each side of bracket which straddles oem tab under swing arm. It is a precision adapter bracket to say least. Its only purpose is to give a spot for this oem caliper which is cast including the bracket as in 1 pc with bolt on caliper half. Mine just allows it to slide for adjustment as it would on a factory swing arm designed for it.