Shimano Deore XT SW-M8250-IR Rapid ES Di2 Wireless Shifter - Right 11/12-Speed I-SPEC EVShimano Deore XT SW M8250 IR Rapid ES Di2 Wireless Shifter Right 11 12 Speed I SPEC EV. The Shimano Deore XT SW M8250 RAPID ES shifter feels instantly natural out of the box but can also be molded to fit any hand thanks to its familiar fit and evolved adjustability design. Multiple shift modes like hold down multi shift and 2 step multi shift offer versatility and precision while the tactile click prevents mis shifts and a tunable third button allows