Where are you living? You can go to "TOOLS" / "User CP" and add your nation, state or city. Helps to know what companies might sell in your area.
Anyways, Western Power Sports (WPS) in the USA sell "Pivot Works" brand swingarm pivot bearings, sleeves & seals kits #52-0030 for $52.58 msrp thru their dealers.
And "Pivot Works" suspension linkage pivot bearings, sleeves & seals kits #52-03203 for $98.68 msrp.
The swingarm, lower rocker & linkage thru bolts or shafts are only OEM available, no aftermarket parts.
The swingarm pivot bolt #33032-1128 is used '87 - '18. As seen here, https://www.kawasakipartshouse.com/o...rch=33032-1128
The Steering bearing adjustment spanner Nut is only OEM available & it must have the 2 fingered tab washer above it held down securely by the top crown nut to stay adjusted.
Or it will loosen Every Time the lower triple clamp is swung Left to Right while attempting to 'Adjust it'.
When the top nut is tightened, it will add just a 'hair more' preload to the bearing assembly.
I have seen pics of powder coated KLR frames on various forums.