I need to replace the free hub body on my sons xt rear hub (it’s a m756)
It seems the cheapest way to do it is to buy a new hub, use the free hub and keep the bits for spares. Question is… what hubs are compatible? CRC have cheap deals on the 590, 525 and 475’s will any of these match?
Cheers

I would go with the FH-M525 as they used the same cones and spacers on the drive side as the FH-M756. I would avoid the FH-M475 as this used a longer cone so there may be spacing issues.