R-series rear derailleurs are designed to work with 7, 8 ,9, and 10-speed Shimano-compatible road shifters. These R10 aluminum rear derailleurs are lightweight, precision CNC-machined, robust, and can get any bike back on the road.
Light weight all aluminum construction
Compatible with Shimano 7, 8, 9, and 10-speed road systems
Not compatible with Shimano Tiagra 4700 road system
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