Before we start, please note that your hub must use the generation two axle to support the XD freehub driver. For more information, please see the related technical service bulletin on our website

Let's start by removing the 10sp freehub body

Remove the Freehub lockring if your hub uses one

2016+ hubs and freehubs use a one piece seal and no lockring, so skip this step if you don't see the lockring

Loosen the 3mm hex endcap screw, by turning counterclockwise

Loosen the non-drive side endcap by turning it clockwise.

Remove the non-drive endcap

Slide the steel axle out of the drive side of the hub

Be careful not to dislodge the freehub body

Remove the freehub spacer.

Note: this spacer is not used with the XX1 freehub body

Remove the freehub body

Be careful not to lose any of the pawls or the pawl springs

Remove the freehub shim

This is a thin washer. Be careful as sometimes this can stick to the inside of the freehub body or the bearing spacer

Next, slide the XD freehub onto the axle.

Note: Do not use the endcap that comes with the 10sp freehub between the end of the axle and the freehub body, the XD driver uses a thinner cap

Slide the freehub shim onto the axle after the freehub body

You should now have the axle, freehub body and freehub shim installed on the axle.

Slide the axle assembly into the freehub spacer and hub shell

Turn the freehub body counter-clockwise to compress the pawls into the ratchet ring in the hub shell

For information on lube and service for the freehub body please see our freehub service instructions

flip the hub over and install the non-drive endcap

Remember, this endcap uses a reverse thread so turn it counter-clockwise to tighten

Turn the endcap by hand to adjust bearing preload until the hub no longer has bearing play

Cone wrenches can be used, but are rarely needed

Tighten the non-drive endcap using a 3mm hex wrench to 3nm

Install the freehub dust seal lockring (if used)