Shimano Dura-Ace Di2 12-speed R9250 E-tube Rear Derailleur

• The rear derailleur is now the brains of the system with wireless connectivity to the shifters. It acts as the point the system is charged, provides Ant+ connection to 3rd party devises and replaces the handlebar junction
• Button on the derailleur for Di2 operations, and led light denotes synchronized shift mode, setting mode and charge requirements
• Programmed automatic motion at the touch of a switch makes this derailleur quick, smooth and effortless to shift
• Synchronized shift designed, developed to choose the next biggest or lowest gear ratio irrespective of whether a gear change needs to be made by the front or rear derailleur
• The removal of traditional mechanical cables in favour of electrical wires not only eliminates poor shifting caused by contaminates, corrosion and stretching
• Low profile shadow derailleur design
• Derailleur contains a saver (fuse) function, where the inner structure is protected from strong impacts
• 11-34t wide gear ratio capacity will cater for compact setups as well as the traditional road double
• Full carbon fibre inner and outer pulley plates enhance rigidity and reduce weight
• Titanium b axle bolt for further weight savings
• High tolerance cold forged aluminium link plates and body construction is extremely light and durable
• Four self-lubricating micro-machined fluorine-coated link pivot bushings provide low-friction shifting
• Pulleys are made of tough dupont zytel for longer life and less chain noise
• 12-speed e-tube Di2 compatible

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At 99 Bikes our priority is to ensure that you are highly satisfied with your purchase. In the unlikely event that you aren't, we offer a 30 day online return policy* in which you can receive a full refund. Any item including bikes (with the exception of food) can be returned to us for any reason provided it is received by us in an unused and resalable condition in or with its original packaging which must be undamaged.

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