The Shimano ZEE RD-M640-SS Rear Derailleur is a high-performance option for downhill riders. Its 10-speed, short cage design in gray color comes equipped with Shimano's stabilizing Shadow RD+ clutch technology to reduce chain slap and noise. The close ratio option is specifically tailored for DH riding. The derailleur has a rear direct mount and is compatible with Shimano mountain shifters. It has a chain wrap capacity of 25 teeth and a weight of 250g.
- Color: Gray
- Largest Cog: 28
- Rear Derailleur Mount Type: 10x1 Standard , Shimano Rear Direct Mount
- Chain Wrap Capacity (teeth): 25
- Cage Length: Short
- Rear Der/Shifter Compatibility: Shimano Mountain
- Drivetrain Speeds: 10
- Weight: 250