The XTR SW-M9250 Shimano 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 tactile click-through double shift or locked-out single shift deliver top precision while a tunable third button allows for additional system tuning or third-party connection.Precise lightning-quick wireless shifting activated by Shimano&';s most adjustable customizable and satisfyingly tactile shifting switchAssign a function to the programmable third button through the E-tube app with full switch and e-bike customizationFamiliar fit and multi-axis adjustability make this Shimano&';s most natural-feeling shifter yetTech-packed with a four-way adjust two-step double shift or hold down multi-shift rubber traction pad and single/double mode converter TECH SPECS table{border-collapse:collapse;width:100%;} td{text-align:left;padding:8px;font-weight:350;} tr:nth-child(even){background-color:#f2f2f2} th{background-color:#eb212e;color:white;text-align:left;padding:8px;} .desc .specs-heading{font-size:24px;font-weight:600;padding-top:35px;border-top:3px solid #f0f0f0;display:inline-block;border-bottom:4px solid #eb212e;width:142px;margin:0;} Rear Der/Shifter Compatibility Shimano Mountain Di2 Drivetrain Speeds 12 Color Black/Silver Weight 104