Shimano RD-R9150 Dura-Ace Di2 11-Speed Rear Derailleur

• 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
• Wireless data network system unit is integrated into mech
• 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
• 11-30T 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 keep it lightweight
• 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 gives low-friction shifting
• Pulleys are made of tough DuPont Zytel for longer life and less chain noise
• Direct mount compatible
• 11-speed E-tube Di2 compatible
• Max front difference: 16T
• Total capacity: 35T
• Weight is 204 grams

Occasionally, without notice, manufacturers change product design and/or specifications.