Shimano ZEE RD-M640-SS Rear Derailleur - 10 Speed Short Cage Gray With Nipples X-Range™ gearing gives you more

X-Range™ gearing gives you more range and a smoother gear progression

157263-Q0-L

140351-Q0-L

Bicycle manufacturers may make mid year changes

150070-Q0-L

Shimano ZEE RD-M640-SS Rear Derailleur - 10 Speed Short Cage Gray With Nipples X-Range™ gearing gives you moreShimano ZEE RD M640 Rear DerailleursShimano's stabalizing Shadow RD+ clutch technology is proven to reduce chain slap and noise Product Specifics Rear Derailleur Mount Type: 10x1 Standard Rear Derailleur Mount Type: Shimano Rear Direct Mount Rear Der Shifter Compatibility: Shimano Mountain Cage Length: Short Drivetrain Speeds: 10 Weight: 250 Color: Gray keyword search: Shimano2018 Chain Wrap Capacity (teeth): 25 Largest Cog: 36 Today's Stock Status