Dura-Ace Di2 (Dual Integrated Intelligence) moves to the next generation. Tested in competition and taken to victory by pro riders in all conditions, including the 2012 Tour de France Team Sky. SM-JC41 cable junction for internal wire routing. Key Features: Required for connection of the rear mech, front mech, battery and cable to battery indicator junction box. Positions inside your frame. Water resistant. Cables sold separately.
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