evo.com | Shimano Rear Derailleurs > The Shimano Deore XT RD-M8200 SGS 12-Speed Rear Derailleur is the most robust XT rear derailleur yet, built on a modern hanger with a low-profile, wedge-shaped design that keeps it out of harm's way. An internal spring absorbs impacts from rocks and roots and returns the derailleur to position, and its 510% gear range handles everything from enduro race days to all-day adventures. Pair it with a 10-51T cassette for even wider range. SHADOW ES A slimmer, stronger evolution of Shimano's pioneering chain-stabilizing SHADOW concept, with a wide link structure for durability. Covered Pulleys/Cage The solid pulley and shielded pulley teeth prevent trail debris from jamming up your flow. Long Cage Compatible with all HYPERGLIDE+ 10-51T 12-speed cassettes. Wedge-Shaped Design Made to move out of the way to absorb trail impacts for a worry-free ride | Shimano Deore XT RD-M8200 SGS 12-Speed Rear Derailleur 2027 - 51T Max