Shimano's SW-M8050 Right Shifter can control one or both derailleurs on XT Di2 electronic mountain groupsets. Its short lever throw and tactile button-feel provide instant and responsive shifts, and because it's all electronic, Shimano was able to maximize ergonomic comfort without the constraints of mechanical internals. Each lever can be adjusted in length for the perfect fit for any size hand, and XT Di2's E-Tube customization allows for upshifting or downshifting to be assigned to either lever, as well as front / rear derailleur operation or both when used with Shimano's 2 x 11 Synchro Shift option.
B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.
Mfg PartNum: ISWM8050R
Shifter Type: Flat Bar
I bought one of these XT shifters for my wife's Di2 setup. I bought an XTR version for my own. There really is no functional difference so get this one and save some $$. The XTR might be slightly more refined, but not enough to matter (though the XTR is a few grams lighter.)