| Features | FIREBOLT shifter:
Seamless Control. Instant Response
With ergonomics based on Shimano’s Rapidfire beginnings, the Di2 FIREBOLT shifter offers unrivaled, intuitive shifting thanks to its shorter lever throw and decreased shift effort.
Shimano’s FIREBOLT customizable shift button placement is determined entirely by human ergonomics. This means that the shifters are now exactly where your thumbs naturally rest. Shifts can happen more quickly, allowing you to adjust to the terrain and your desired effort like never before, taking Shimano’s Rider Tuned concept to an entirely new level.
• Independent lever position adjustment
• Ergonomic rotary shift lever matches natural hand movement
• 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
Di2 Rear Derailleur:
Shimano’s XTR M9050 Di2 rear derailleur delivers unrivaled chain control and shift performance that doesn’t degrade over time. With Shimano Shadow RD+ clutch technology, the RD-M9050 is the ultimate mountain bike rear derailleur. Its profile is narrower than ever, helping you squeeze through tight sections without worry of damage. A refined geometry augments Shimano’s already legendary performance stability while system communication with the front derailleur makes Shimano Synchronized Shift a possibility.
• 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 rear derailleur ever produced by Shimano
• 1x, 2x and 3x compatible with GS and SGS cage options
Di2 Front Derailleur:
Powerful, Di2-Optimized Front Shifting
With XTR M9050 Di2, front shifts require very little effort, with the swift tap of a button already at your fingertip. The digital control of Shimano’s front derailleur means that the exact same input is used for each and every shift, the definition of reliability. Computer controlled auto trim means that you can remain focused on the trail ahead. The FD-M9050 is also Shimano Synchronized Shift compatible, so if you choose, a single shifter can control both front and rear shifting, custom tuned to your preferences.
• Reliable gear changes under load
• Computer controlled auto trim
• Optimized Di2 cage profile and gear tracking
• Shimano Synchronized Shift compatible
• Advantage in all conditions
• Modular mounting structure
Display Unit:
System Status at a Glance
Di2 shifting creates an entirely new level of rider options and control. The digital E-tube platform also allows the inclusion of the SC-M9050 Display Unit. With a quick glance, you can monitor your important Di2 data: gear selection, battery level and shift mode. The expandable E-tube platform also means that integration with electric-controlled suspension from Fox is a reality. All this data at a glance means that you can focus more of your attention on the trail ahead.
• Multiple simultaneous display fields
• Battery level
• Gear position
• Shift mode (Synchronized or Manual)
• Fox SUS position (Climb, Trail or Descend)
• Shimano Synchronized Shift mode switch
• Change between S1, S2 and Manual shift modes
• 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
Battery Case/mount & Wires:
Connecting the System
Shimano’s XTR M9050 shifting system uses the same E-tube platform introduced with road Di2 groups. E-tube is programmable, customizable and allows for expansion and further system integration. Wires are offered in a wide variety of lengths, ensuring optimized wiring for bikes of all sizes and shapes. Unlike traditional cables and housing, wires are not affected by trail and weather conditions, providing consistent performance at all times. The SM-BTC1 mounts Shimano’s SM-BTR2 on a bike’s water bottle bosses and also acts as a Junction B, connecting wires from the shifters to the battery and derailleur. The SM-BTC1 also acts as a cable organizer, keeping your bike looking tidy.
• SM-BTC1 mounts current SM-BTR2 battery externally next to bottle cage
• Low profile design mounts to any frame with bottle cage mount
• Junction B function
• Six E-tube wiring ports with cable organizer
• Clean appearance thanks to internal wire routing
• System expansion thanks to E-tube platform
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