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more secure shifting
BR-R7170 Hydraulic Disc Brake Caliper
Chain Management Features
making this the most repairable derailleur we’ve ever made
SHIMANO Ultegra R8000 rear derailleur 2*11S road bike derailleurs cage:GS more secure shiftingThanks to Shadow RD integrated technology, with its low profile design tested on the top R9100, the derailleur is more compact and closer to the chassis, ensuring less damage in case of fall. Shimano SHADOW RD low profile design increases shift stability and reduces crash vulnerability while providing a sleek integrated appearance. New compact integrated design Low profile design Shimano Shadow RD Optimized tilt angle Wide compatibility Short cage SS
