Get the ultimate performance and smooth shifting with the Shimano RD-M5100 Rear Derailleur. Designed for Deore M5100 11-speed drivetrains, this product boasts the innovative Shadow RD+ chain stabilizer system to reduce chain slap. Plus, it is compatible with 11-speed systems and can handle a maximum cog size of 51T. Upgrade your ride with this top-notch derailleur.