The Deore M6100 series rear derailleur ensures reliable and quick gear changes from cog to cog. Designed to work seamlessly with the 10-51 range of the 6100 cassette, you can be confident in the correct chain transitions. The Shimano derailleur features SHADOW RD+ technology, adopted from the XT, Deore XT, and SLX series, which reduces noise and increases chain robustness and stability.