The Shimano RD-M6100 Rear Derailleur provides efficient and smooth shifting for Deore M6100 12-speed drivetrains.

• Features the Shadow RD+ chain stabilizer system to minimize chain slap
• Fast and precise shifting
• 13T pulley
• For single front chainring setup
• 51T max cog size

• Color: Black
• Largest Cog: 51
• Rear Derailleur Mount Type: 10x1 Standard
• Cage Length: Long
• Rear Der/Shifter Compatibility: Shimano Mountain
• Drivetrain Speeds: 12