84 pcs for one model means each side there are 42 track link sections.
Other CATERPILLAR big size track shoes application:
RH120 RH170 RH200 RH340 RH400
CAT 6030 6040 6050 6060
HR have ability to produce above items according the drawings or samples provided from customers.
as HR already have the moulds wk35,2300xpc,2300xpa,2300xp,2100 in operation.
Other related replacement parts available:
Bucket teeth,Bucket wear parts ,Bucket protectors