[rpet]

I'm finally making the jump to 10 speed. I like the 11-28 spread, and right now the 105 cassettes are cheap.

Are 10 speed shimano cassettes still fully-compatible with 10 speed shimano mountain shifting, as they were with 9speed?

 

[Slash5]

Yes, fully compatible. The road cassettes are built much lighter than MTB ones so I'm not sure how they will stand up but if the gear range is good it's worth a try.
I've got 105 cassettes for two bikes I swap for easier double track and rail trails.

 

[rpet]

Thanks! Trigger pulled.

This is for a lift access only DH bike, so not exactly a maximum pedaling torque situation ( I don't race). Had fine luck with aluminum carriers on XT cassettes in the past, and looks like this 5700 105 cass has nice chrome-steel cogs.