Kawasaki Z 400 J 1 1980. Kawasaki Z 400 J 2 1981. Kawasaki Z 400 J 3 1982. Kawasaki Z 400 J 3 1983. Smooth running is enhanced by special oils, greases or coatings. For the trains is usually a high-quality silicone oil used to reduce the hand forces.
eBay