1975 kx400 rear hub

[Caferacer78]

Having great difficulty finding 1975 kx400 rear hub.Oem cycle interchange says my 81 kdx2 250 hub will work but the backing plate is not even close. Anyone know of a backing plate that will work? I would use any hub combination just to finish this bike. Original parts are scarce, so are the kx250 hubs that interchange. Thanks for any help with this.

[Sandblaster]

According to Kawasaki part numbers 42005-045-21 the following hubs will work.

1974 KX250 REAR HUB-BRAKE-CHAIN (KX250-A-A3)
1975 KX250-A REAR HUB-BRAKE-CHAIN (KX250-A-A3)
1975 KX400 REAR HUB-BRAKE-CHAIN
1976 KX250-A3 REAR HUB-BRAKE-CHAIN (KX250-A-A3)
1976 KX400-A2 REAR HUB-BRAKE-CHAIN
1978 KX250-A4 REAR HUB-BRAKE-CHAIN (KX250-A-A3)
1979 KX250-A5 REAR HUB-BRAKE-CHAIN (KX250-A-A3)

The info on the interchange page is out of date and not accurate.
I will be updating it later today.

On the rear brake backing plate 42006-059 here is the current interchange
1974 KX250 REAR HUB-BRAKE-CHAIN (KX250-A-A3)
1975 KX250-A REAR HUB-BRAKE-CHAIN (KX250-A-A3)
1975 KX400 REAR HUB-BRAKE-CHAIN
1976 KX250-A3 REAR HUB-BRAKE-CHAIN (KX250-A-A3)
1976 KX400-A2 REAR HUB-BRAKE-CHAIN
1978 KX250-A4 REAR HUB-BRAKE-CHAIN (KX250-A-A3)
1979 KX250-A5 REAR HUB-BRAKE-CHAIN (KX250-A-A3)

More on this in a bit

[Sandblaster]

Ok, the interchange pages have been updated to the latest info I have available.