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The Dura Ace series is Shimano's lightest, most ergonomic, and most precise groupset ever; delivering the finest mechanical performance. The extra eleventh gear and numerous other enhancements combine to deliver a truly dominating performance. When you ride Dura Ace, you're riding to win. Levers: SIS indexed shifting-- 11-speed design-- Smaller hoods improve ergonomics from all positions-- Release lever stroke reduced by 30% compared to ST-7900-- Polymer-coated cables for the smoothest shifting-- Shifting effort up to 47% lower than RD-7900-- 43% less effort at the end of the lever stroke than FD-7900. Brakes: 10% more power than BR-7900-- Smooth and light operation with increased modulation-- Also available in direct mount version (BR-9010) for aero applications. Rear Derailleur: Fast and accurate shifting-- 11-speed design-- Maximum sprocket 28t-- More equal shifting effort throughout the range. Front Derailleur: Next generation light effort front shifting-- Optimum spring tension provides feather light down shift-- Support bolt keeps correct position even when high torque pedaling-- Capacity-> 16T. Chain: 11-speed-- PTFE coating-- Increased durability (vs. CN-7900). Includes the following parts:
• 180255-03 Dura-Ace BR-9000 brakes
• 230538-01 Dura-Ace ST-9000 shift/brake lever combo
• 240193-02 Dura-Ace FD-9000 front derailleur
• 260133-01 Dura-Ace RD-9000 rear derailleur
• 500108-01 Dura-Ace CN-9000 11 speed chain
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