PM is just for supporting members. It keeps the site running and ad free.
I have never tried it, but they have different part numbers. If it had the same, then it would be fine.
www.partzilla.com is a good place to look up OEM parts to see which other models came with the same part.
This Kawasaki 41068-1341 AXLE,RR fits the following models and components:
Kawasaki Motorcycle 2004 KLX300R - KLX300-A9 Rear Hub
Kawasaki Motorcycle 2001 KLX300R - KLX300-A6 Rear Hub
Kawasaki Motorcycle 2003 KDX200 - KDX200-H9 Rear Hub
Kawasaki Motorcycle 2004 KDX220R - KDX220-A11 Rear Hub
Kawasaki Motorcycle 2002 KDX200 - KDX200-H8 Rear Hub
Kawasaki Motorcycle 2003 KDX220R - KDX220-A10 Rear Hub
Kawasaki Motorcycle 2001 KDX200 - KDX200-H7 Rear Hub
Kawasaki Motorcycle 2000 KLX300R - KLX300-A5 Rear Hub
Kawasaki Motorcycle 2000 KDX200 - KDX200-H6 Rear Hub
Kawasaki Motorcycle 2001 KDX220R - KDX220-A8 Rear Hub
Kawasaki Motorcycle 2003 KLX300R - KLX300-A8 Rear Hub
Kawasaki Motorcycle 2002 KDX220R - KDX220-A9 Rear Hub
Kawasaki Motorcycle 2002 KLX300R - KLX300-A7 Rear Hub
Kawasaki Motorcycle 2000 KDX220R - KDX220-A7 Rear Hub
Kawasaki Motorcycle 1999 KDX220R - KDX220-A6 Rear Hub
Kawasaki Motorcycle 2004 KDX200 - KDX200-H10 Rear Hub