Shimano ZEE RD-M640-SS Rear Derailleur - 10 Speed Short Cage Gray With Clutch Wide Ratio Freeride CheckoutTitle=SRAM Apex Mech Inner Cage the concept of marginal gains

the concept of marginal gains becomes an ever-important one

model Flow CB7 Carbon size 27

6061-T6 aluminum construction with removable 2-bolt faceplate

5 42 85 1088 450 62 606 404 725 640 70 170 700C M 460 73

fully padded

Shimano ZEE RD-M640-SS Rear Derailleur - 10 Speed Short Cage Gray With Clutch Wide Ratio Freeride CheckoutTitle=SRAM Apex Mech Inner Cage the concept of marginal gainsShimano 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