sapeacock

Hi all, I'm new here and haven't went through the threads so I'm sure I'll ask the same questions others have asked. Also I am new at customizing bikes, i have probably have missed some tech stuff.

But here's the delima: I would like to change my rear cassette from a 12-30T to a 11-36T. I live in the Rockies and deal with some very long up-hill climbs. I realize that i need to change my rear derailleur as well.
The cassette I'm thinking of is a Shimano CS-H681 SLX Cassette 10-Speed 11/36T,
and the R-Derailleur a Shimano RD-M593 Deore RD SGS Long Cage 10-Speed.

So the big question is will these new components work with with my current rear shifter, and forward drive train? If not what else will i need?

My current shifter is a Shimano 10-speed Tiagra Rapid fire flat bar shifter. (model number unknown, couldn't find one)
Crankset/ front derailleur - FSA VERO Compact N10 50/34T with shimano 105 front derailleur.
Chain - FSA CN-910 10 speed chain (114 links road/mountain chain).
If your wondering what the bike is, its a Diamondback Interval Elite 2013.

Thanks for your help,

Steven