A sample from the products for the Rear Hub/chain ('77-'78 A1/a2/a2 include: Collar,bearing, Sleeve,rr Hub Couplin, Circlip 62 M/m, Drum Assy, Rear Brake.
With a quantity of six pieces, the Nut,10mm is the most used part in the REAR HUB/CHAIN ('77-'78 A1/A2/A2 diagram.
The most reasonably priced component used on the Kz1000a2 Kz1000 1978 Canada Rear Hub/chain ('77-'78 A1/a2/a2 is the Pin-cotter,4.0x35.