Shimano ZEE RD-M640-SS Rear Derailleur - 10 Speed Short Cage Gray With Clutch Wide Ratio Freeride MFPN=RF726-GKSK-B2 Perfect for low-torque applications such

Perfect for low-torque applications such as stem bolts levers and carbon fiber components

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

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

CNC 7075 hard aluminum cassette body with Shimano HG splines

- VENTILATION: Optimized vent placement and internal channels help provide cooling during intense climbs and summer rides without sacrificing speed

Shimano ZEE RD-M640-SS Rear Derailleur - 10 Speed Short Cage Gray With Clutch Wide Ratio Freeride MFPN=RF726-GKSK-B2 Perfect for low-torque applications suchShimano 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