The reason I ask, I bought a used Jamis Dakar XCR, installed a new chain and cassette. My first combo was a SRAM PG950 9speed 11-34 while I waited for the one I wanted to install to arrive. When I got the Deore XT (same speed and teeth ratio) and installed it I had nothing but chain skip problems with it on inclines. Wound up putting the "cheaper" cassette back on. So was just wondering if my ordering needs to be MTB specific?