I have a set of SRAM X-9 or an XTR M960 rear derailleur and XT SL-M751 shifters. If you are running cable brakes I also have a set of integrated XTR M952 shift/brake levers (non-dual control). The shifters and brake levers are seperate, but share the same mount. Both rear derailleurs are long cage. The XTR was just cleaned and the bearings rebuilt today.