Shimano Deore RD-M6100-SGS Rear Derailleur - 12-Speed Long Cage Black CheckoutSpec= 4.9' Flattop technology is so much

Flattop technology is so much more than a distinctive look

5mm shaft model

With an all-new mono-body construction design high performance braking has reached a new peak

without using glue materials

Shimano Deore RD-M6100-SGS Rear Derailleur - 12-Speed Long Cage Black CheckoutSpec= 4.9' Flattop technology is so muchThe 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 Rear Derailleur Mount Type 10x1 Standard Rear Der Shifter Compatibility Shimano Mountain Cage Length Long Drivetrain Speeds 12 Color Black Largest Cog 51