WTB: bike parts


I am building a new bike for the other half. I need some parts for it. Will be a Revel Rail 29er.
Buying frame only so I need all the parts.
I dont have any employee purchase any more so looking to see if any builders have left over parts they are not using.

Let me know what you have

Thanks in advance.

I have a Shimano cassette: CS-M7100 (SLX) 12 speed 10-45T and a chain I’m happy to part with.
They were purchased as a stop-gap when everyone was out of the 10-51T cassettes.
I’m guessing there’s 15-20 miles on this.

$55 + shipping?

Really needs to have a 51 or 52 rear for climbing.