i think the axle is a little wider than stock, it has a durablue sticker on it but idk, also is there a way to tighten up the rear axle? it has play in it but im told the bearings are new?
Check the bolts on the carrier. Mine always seemed to wiggle loose and eventually ruined the carrier bearings. This was the problem on my old 250x. I think they were the two bolts towards the back of the carrier. Dont hold me to this information as ive owned so many quads they all blend together but I think that is the setup on a 250x or at least mine.
The black plastics look good man. The those 2 bolts on the back carrier are the ones that tighten the axle down. Is there a nut on the bottome side? Mine has 2 nuts on the bottom side one to lock it and one to tighten it up.
As for the brake thing My back brake is f*cked up too. I think the heat off the exhaust keeps warping my ressie so Im gonna remount the rezzie on the inside of the frame. And I need to rebuild my master cylinder. Its cheesed.