[AL29er]

In case you were looking for one. I grabbed one for Christmas, including shipping it was about $60. On occasion you can nab them cheaper on e-bay, but this is new in box and from a retail outlet. No bidding, waiting, or shipping weirdness.

here is a link

 

[DFCall]

By OLD Centerlock Rear Hub, do they mean that this is the large original Centerlock Saint hub?

 

[AL29er]

M800/801 is the original OS CL style. You're on your own for oversize rotors. I have a stack of them myself

 

[daugela]

M800/801 is the original OS CL style. You're on your own for oversize rotors. I have a stack of them myself

Maybe you can help me. Do you have a model or part number for the oversized lockring on the M800? thanks

 

[AL29er]

Maybe you can help me. Do you have a model or part number for the oversized lockring on the M800? thanks

Shimano p/n: 3-8hu98030
Lock Ring and Washer for RT80 rotors

You are more likely to find a rotor with them for about the same price you can get them alone FWIW