Freehub assembly for the S1 and R1 rear hub.  Ready to swap in without the need of tools.
 
*If you are converting to a Microspline freehub, you will need a Microspline specific endcap. If you are converting out of Microspline, you will need an HG/XD endcap. You dont need an endcap if you are converting between XD and HG*
 
Please let us know your hub serial number (in the fill out box) to make sure we send you the correct configuration.
 
Options:
Select your drivetrain standard specific freehub. Options are for Shimano HG/HGR traditional (compatible with Sram NX, and road cassettes), Sram XD/XDR, and the new Shimano Microspline 12sp.