Shimano unveils XTR Di2 electronic shifting

Words by Shimano | Images by Shimano

Following over half a decade of proven Di2 electronic shifting systems, Shimano introduces XTR M9050 Di2, the world’s first production electronic mountain bike shifting system. An electronic shifting option for Shimano’s new 11-speed XTR M9000 mechanical mountain bike components, XTR Di2 redefines how mountain bikers can control and personalise the way they ride through the proven Di2 digital platform.

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 personalisation of the digital Di2 system, riders now can control their ride like never before.

THE XTR Di2 RIDE EXPERIENCE 

XTR M9050 Di2 has undergone over 20,000 kilometres of testing to ultimately refine how precision and logic can deliver a completely new mountain bike ride experience. Di2 digital shifting is seamless, instantaneous and can be custom tailored for any rider. Shifting becomes a simple rider reflex, allowing riders to place their attention where it belongs – on the trail ahead. Totally new ergonomics reduce hand movement and improve control, further boosting rider confidence.

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THE POSSIBILITIES WITH SHIMANO Di2 

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 customisable 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 minimising time spent on smaller chainrings and cogs.

• Personalised shift mapping - Riders can program when front shifts occur through two customisable 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.

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XTR FIREBOLT SHIFTER: SEAMLESS CONTROL AND INSTANT RESPONSE 

The new, easy-to-use XTR Di2 FIREBOLT shifters make shifting a simple rider reflex and deliver customisable ergonomics that improve bike control. Shimano’s FIREBOLT customisable 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.

• 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.

 

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XTR RD-M9050: UNRIVALED SHIFT PERFORMANCE AND STABILITY 

Shimano’s first mountain bike specific Di2 rear derailleur is also its most technologically advanced. Introducing Shimano Shadow RD + stabilisation to Di2, the RD-M9050 couples unrivaled chain control that aggressive riders have come to love with shift performance that doesn’t degrade over time. Whether cross country or trail riders run a 1x, 2x or 3x drivetrain, the ultra narrow profile help protect the drivetrain in tight trail sections. The refined rear derailleur geometry further improves the performance stability while Shimano Synchronized Shift enables system communication with the front derailleur.

• Instantaneous shift response to rider input

• Seamless gear changes

• Shimano Synchronized Shift compatible – system communication with front derailleur

• Advantage in all conditions – E-tube electric wire transmission guarantees stable performance

• Low profile positions RD safely away from trail obstacles

• 1x, 2x and 3x compatible with GS and SGS cage options

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FD-M9050/9070 (3X/2X): POWERFUL, DI2-OPTIMISED FRONT SHIFTING 

Long regarded as the most notable feature of Shimano Di2 shifting, the front derailleur performance remains the best in the industry, now with the additional capabilities of Shimano Synchronized Shift. With XTR M9050 Di2, front shifts require the same light effort of a rear Di2 shift, reducing effort and freeing up the rider to focus on the trail. The FD-M9050 uses computer controlled auto trim as the chain moves up and down the cassette to keep the drivetrain running smoothly. Shimano Synchronized Shift compatibility allows a single shifter to control both front and rear shifting.

• More powerful shifting than mechanical (+25% compared to M9000)

• Reliable gear changes under load

• Computer controlled auto trim – optimised Di2 cage profile and gear tracking

• Shimano Synchronized Shift compatible – system communication with rear derailleur

• Advantage in all conditions

• Modular mounting structure

 

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SC-M9050 DISPLAY UNIT: SYSTEM STATUS AT A GLANCE 

Digital Di2 E-tube electronics allow the inclusion of the handlebar mounted SC-M9050 Display Unit for monitoring important Di2 data: gear selection, battery level and shift mode. The SC-M9050 not only provides data, but also is the convenient interface where riders will plug in and charge the system from the handlebar – an especially handy virtue when running an internal battery. The expandable E-tube platform also means that integration with electric-controlled suspension from FOX is a reality.

• Multiple simultaneous display fields – Battery level, Gear position, Shift mode (Synchronized or Manual), FOX iCD position (Climb or Descend)

• Shimano Synchronized Shift mode switch – change between S1, S2 and Manual shift maps

• Audible Shimano Synchronized Shift notification tone

• Precision derailleur adjustment – easy access adjustment mode, numerical adjustment indicator

• Junction A function – battery charging port, three E-tube wiring ports

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E-TUBE ELECTRONICS CONNECT THE SYSTEM 

Shimano’s XTR M9050 shifting system uses the same E-tube platform introduced with road Di2 groups that is programmable, customisable and allows for expansion and further system integration. Wires are offered in a wide variety of lengths for bikes of all sizes and shapes and cable routing options will connect the various junction points. Unlike traditional cables and housing, wires are not affected by trail and weather conditions, providing consistent performance in this waterproof system.

• The SM-BTC1 mounts Shimano’s cylindrical SM-BTR2 Di2 battery on a bike’s water bottle bosses and also acts as a Junction B, connecting wires from the shifters to the battery and derailleur.

• Junction B function – Six E-tube wiring ports with cable organiser (case is also available separately for riders with an existing battery)

• Clean appearance thanks to internal wire routing

• System expansion possible thanks to the E-tube platform

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