I just replaced the bearing in a 86 sx. Harbor Freight has a cheap metric allen set that goes to 17mm, on sale about $13. I ended up just replacing the bearing itself as the race seemed to be okay and was not scored or scratched. I saw in the ebay pic the two metal caps, those are not mentioned in the manual it looked like part of the frame. The swing arm bolt is what torques to 12-14 ft lbs and the lock nut torques to 72-94 ft lbs. I modified a socket to get the lock nut out and will have to make a wrench out of a piece of pipe to tighten the lock nut.