you can get aftermarket bearings from any parts store. I have never had any probs with clevite and ACL are fine too. I have used top line bearings and don't know if they make their own or not but they don't look as nice as the clevite. I sell a ton of the Eagle rods and have measured many just top check them out and they are all the same bore size. I would just use a set of clevite bearings on the rods and plastigage them.