Originally Posted by
70sSanO
Wheels Mfg does/did offer aftermarket cones, but they seem to be limited to popular hubs that use the same cone. I have been able to find a few cones I needed. Loose Screws sells a few NOS axle assemblies. That is what I did when I swapped out a 7 speed freehub body for an 8 speed body.
Yes, Wheels Mfg has axles and cones for my stock 8/9/10-speed FH-M570 hub, but a substitute 7-speed freehub body could then require a different axle and RH cone.
But the "hopefully" more foolproof approach, but more expensive especially since NOS stuff is crazy expensive, is to figure out what freehub bodies will work and just buy a complete freehub. Use the existing NDS cone and dust seal and move the DS body, cone, and seal over to the existing hub.
The more I look and learn the more convinced I become that Shimano stopped backward freehub body compatibility between M550/M560 and M570.