Shimano XTR Di2 SL-M9050 Shifters (Black) (Left)

Shimano XTR M9050 Di2 electronic shifting integrates with XTR M9000 mechanical components in a variety of Race or Trail “Rider Tuned” 1x, 2x, or 3x drivetrain configurations. The new 11-speed XTR M9000 drivetrain introduces Rhythm Step gearing which provides range and ensures rhythm, no matter the rider or terrain. With the additional efficiency, new shifting options and personalization of the digital Di2 system, riders now can control their ride like never before.

The new, easy-to-use XTR Di2 FIREBOLT shifters make shifting a simple rider reflex and deliver customizable ergonomics that improve bike control. Shimano’s FIREBOLT customizable shift button placement is determined entirely by human ergonomics, not by the needs of a mechanical mechanism. FIREBOLT shift levers are now exactly where thumbs naturally rest, allowing riders to put more grip on the handlebar and control the ride with more confidence – especially in rough conditions.

Features:

• New ergonomic rotary shift lever design matches natural hand movement
• Independent lever position adjustment  
• Short stroke, perfect click levers provide faster, more accurate shifting
• Increased trail readiness thanks to decreased shift effort and superior ergonomics
• Programmable, multi-shift and Shimano Synchronized shift functions, including control of Fox Racing Shox suspension components

Over half a decade of experience in electronic shifting components have culminated with the introduction of Shimano’s most advanced Di2 system ever. XTR M9050 Di2 features the programmable, upgradeable and expandable attributes of Shimano’s latest Di2 shifting systems, which now debuts intuitive shifting control. Shimano’s E-tube wiring and electronics make expanding Di2 shifting systems easy and also enable riders to custom program and upgrade the system through a computer software interface. Riders can program and control the shift patterns for single or multi-shift modes, the speed of those shifts and the actions for each shifter and button. With XTR Di2, Shimano Synchronized Shift is also custom programmed through the Di2 program software, allowing front and rear shifts using a single shifter.

Shimano Synchronized Shift: two derailleurs, one shifter

The new Shimano Synchronized Shift function and programmable shift mapping allows riders to change their focus from the physical effort of shifting to the trail ahead. A programmable option with XTR Di2 M9050, Shimano Synchronized Shift creates an intuitive shifting experience on the bike through customizable synchronized front and rear shifting via a single FIREBOLT shifter.

Improved efficiency – The XTR M9050 derailleurs communicate gear position and automatically execute front and rear shifts when riders select a sequentially larger or smaller gear. This improves efficiency by minimizing time spent on smaller chainrings and cogs.

Personalized shift mapping – Riders can program when front shifts occur through two customizable shift maps based on terrain and personal preferences. An audible alarm will warn of an upcoming front derailleur shift so that a rider can choose to remain in a given gear.

Total control – On a mountain bike with both front and rear FIREBOLT shifters installed, the rider can manually shift at any time. Synchronized Shift becomes another available tool for riders, not a requirement. With a touch of a button, riders quickly choose between synchronized maps or choose manual mode for complete control.