Shimano RD-M6100 Rear Derailleur Deore Shadow+ 12-Speed Long 51T Maximum

Delivers advanced shifting performance with decreased tension in the low gear position. Larger 13T pulleys increase efficiency and chain management while compatibility with Shimano's new 12-speed cassettes boosts range.

• Quiet drive train
• Reduced chain slap
• Simple solution for chain drop
• Lighter and more efficient than roller type chain device