The rotor and hub are not sold as once piece. There is no reason you should ever have to buy a new hub unless you hit something. To remove hub from rotor, attach rotor to a wheel with a few lug bolts, then use a breaker bar + allen socket to remove the bolts. I got them off without even heating them using this method. Inspect the bearings, most likely they will be fine. Clean them off super well with brake cleaner etc...then do a good job repacking them with good quality wheel bearing grease. Replace the two seals, and put it back together. Its not all that hard, it just needs to be done carefully and precisely.

You should only need: Rotor, Brake Pads, Wear Sensors, some grease, and the two seals. MAYBE new allen bolts (obtained via dealer, not hardware store) if they are really rusty...your call. Mine were ok.

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