The development of a Dura Ace R9100 high precision, easy to use and reliable shifting system was the main goal of the Shimano engineers. The result was a reworked construction of the front derailleur that needs reduced strength when shifting but delivers a precise shift result. This mechanical shift system sets the level of performance of mechanical shifting even higher.
Technical Information:
Series: Dura Ace R9100
Application: Road (competition)
Outer Body Material: CFRF (plated, painted)
Inner Body Material: aluminium, anodized
Cage Material: aluminium, nickel plated
Gearing: 2-speed (in combination with 11-speed)
Chainstay Angle: 61-66°
Chainring Size (max): 50-55 tooth
Capacity: 16 tooth
Chainline: 43.5 mm
Cable Pull: down pull
Movement: down swing
Mount: braze-on or clamp
Clamp Diameter: 31.8 mm (28.6 mm with adapter) or 34.9 mm
Compatible Chain: HG-EV 11-speed, HG-X11
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