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Shimano Ultegra Di2 ST-R8050 dual control lever for front 2-speed derailleur. Allows not only more intuitive shifting operations but also quick and precise shifting thanks to a clearer separation between shift buttons. A more defined click feeling and a wider reach adjustment range generate even more comfort. Group-specific each switch has the option for multi-shift ON or OFF. The STI's top button remote switch is programmable for third party cycle computers. Every function is compatible with E-Tube application or Shimano PC software.
Product technical specification
- Compatible with 2x11-speed Di2 drivetrain
- Glassfiber reinforced plastic (GFRP) bracket and electric button
- Anodized aluminum lever
- Weight: ~ 150 g
- SLR-EV
- DUAL CONTROL LEVER
- Bar diameter: 23.8 - 24.2 mm
TECHNOLOGY
The DURA-ACE/ULTEGRA/105 Dual Control Lever has an optimized structure with features that include the lighter weight pivot section in the near side of the shifting unit and the integral shifting cable for lighter steering. Its many component parts are made so compact and precise to achieve unprecedented high-speed performance.
SLR-EV is SLR with a dual symmetric pivot brake caliper. The short-arm brake design employs two bearings and a roller to realize greater efficiency in the pivot area and deliver superior modulation and power for braking.
Di2 - The advantages of Di2 (Digital Integrated Intelligence) are clear for everybody who has tested it: changing gears becomes easier, effortless and faster by simply touching the shift buttons. Control at the top of your fingers. Additional benefits include an automatic trimming front derailleur, unmatched precision plus super easy installation and adjustment. This allows automatic chain guide movement in response to the gear position of the rear derailleur. There is no more need for concentration on trimming when riding.
The DURA-ACE/ULTEGRA/105 Dual Control Lever has an optimized structure with features that include the lighter weight pivot section in the near side of the shifting unit and the integral shifting cable for lighter steering. Its many component parts are made so compact and precise to achieve unprecedented high-speed performance.
Important: All Shimano Di2 electronic components require the same firmware version. In order to diagnose, read, or update firmware, an optional device is needed. Operating components with different firmware versions may cause malfunction or loss of function.
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