Shimano ZEE RD-M640-SS Rear Derailleur - 10 Speed Short Cage Gray With Clutch Wide Ratio Freeride MFPN=RF726-GKSK-B2 Swapping simplicity: quick chainring change

Swapping simplicity: quick chainring change with five small bolts and no nuts

Mobile: 4 integrated wheels

Color Carbon Rim Width (Internal) 21 Brake Track None Wheel Size 700c Defined Color Black ISO Diameter 622 / Road / 29" Hub Drilling 24 Rim Material Carbon Tire Type Tubeless Ready Valve Presta

Constructed of 4-way stretch elastic material that is engineered for increased compression and fit without heat retention

4-piston brakes and a size-specific dropper post—available in Matte Black and Almond

Shimano ZEE RD-M640-SS Rear Derailleur - 10 Speed Short Cage Gray With Clutch Wide Ratio Freeride MFPN=RF726-GKSK-B2 Swapping simplicity: quick chainring changeShimano ZEE RD M640 Rear DerailleursShimano's stabalizing Shadow RD+ clutch technology is proven to reduce chain slap and noise Largest Cog 36 Color Gray Rear Der Shifter Compatibility Shimano Mountain Rear Derailleur Mount Type Shimano Rear Direct Mount Drivetrain Speeds 10 Weight 250 Chain Wrap Capacity (teeth) 25 Cage Length Short