Yes, it is my understanding that the CAT 277 has the same undercarriage as the 4810, 4500, and 4520 and uses the same track. There may be others that do as well. An ASV or CAT dealer ought to be able to tell you if there are others. The ASV dealer in my area seems to know about this since people with CAT come to him for undercarriage parts since they are lots cheaper than from CAT. May also just ask the track suppliers, they would know if there are others.
