Shimano XTR M9100 12 Speed ShifterFeaturing many of Shimano’s finest technologies, this mountain bike (MTB) shifter delivers quick and intuitive rear shifting for improved control out on the trail. Its I-Spec EV lever provides a wide range of adjustments including increased lever slide range and a 60-degree rotational angle. Another highlight is its lightweight and compact design, which allows for quicker lever access and light operation force for maintaining your concentration as you weave your way from trail to trail. With greater flexibility and an action-optimised layout, this 12 speed shifter is a perfect choice of upgrade for dependable gear changes wherever your next trail adventure leads you.XTR SeriesIn mountain bike riding, trail conditions change drastically from one second to the next, from one turn to the next. Mountain bikers need to be able to seamlessly perceive the conditions, judge their options, and operate their bike in a split second. XTR satisfies the needs of the most demanding riders by providing the highest level of precision and integration. Shimano refocused on the original goal of XTR - to be the ultimate race components.Features: Use: Mountain Bike (MTB) Speed: 12 speed Shifter Type: Rapidfire Plus Mount: I-Spec EV Max Multiple Shifts: 4 Multi-Bearing Construction: 4 Optical Gear Display: No Release: 2-Way Release, Instant Release and Multi-Release Single or Pair: Single Weight: 112gTechnologies: Multi-Release: Previous shifting systems shifted faster in one direction than the other. Choosing top normal or low normal always meant sacrificing shifting speed in one direction. Now with Multi Release you can release shift two gears in one stroke. The result - the fastest possible shifting in both directions regardless of rear derailleur choice. 2-Way Release: The Rapidfire Plus shifter release lever is commonly called a trigger because it is operated like a pistol, by pulling toward the grip. The release lever of Rapidfire Plus shifters from Shimano Alivio to XTR can be operated in this same manner but adds the ability to activate a release shift by pushing with the thumb. Instant Release: Instant Release shifting replaces the two-stage click and release shifting you are familiar with. Instant Release shifting releases cable as soon the lever is activated, resulting in the quickest possible gear changes. Whether it is an upshift with a top normal rear derailleur or a downshift with low normal rear derailleur a quicker shift is always a better shift. Rapidfire Plus: Mountain bikers have used Rapidfire Plus since 1985. Rapidfire Plus is still a winning choice from a wide range of riders from XC racers to freeriders. Rapidfire Plus is suited to quick shifting, giving riders the ability to downshift three gears in one stroke. Rapidfire Plus shifters from Deore to XTR all feature 2way-Release, which means release shifts by pull of the index finger or push of the thumb. I-SPEC EV: I-SPEC EV creates a clean and action-optimized cockpit that provides greater focus and flexibility for a wider range of riders. Wider adjustment range allows riders of various styles, preferences and body styles to adjust to the optimal position. Ergonomic design, quicker lever access, and light operation enhance rider comfort and concentration.Manufacturer’s Part Number: 37-19470 Black I-Spec EVBuy Shimano Components from Chain Reaction Cycles, the World’s Largest Online Bike Store.