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.
- Lightweight all-aluminum construction
- Compatible with Shimano 7, 8, 9, and 10-speed road systems
- Not compatible with Shimano Tiagra 4700 road system
- Short cage for double crankset and 28T max cog
- Medium cage for double crankset and 34T max cog
|Medium Cage / Black/Silver / 7 – 10-speed||04710495436067||RD-R51M||210000091431|