The entire undercarriage is for sale. In fact this entire 850B is being dismantled. You have hit the jackpot. If you need any other parts besides undercarruage, rollers, tracks, frame, etc.
2 buckets and quick change sytem from Deere 200C LC, It fits a Hitachi EX200 or Deere 200. 42 inch dig bucket with Esco teeth, very good bucket. 72 inch smooth lip bucket with reversible cutting edge.
The center hole diameter is 13.5 pilot and there are 12 lug bolts. Most other parts fro W24 also available as the machine is being dismantled. These are 2 wheel rims for sale off a Clark diff.