Shimano RD-M3100 Alivio Rear Derailleur - 2PK

The Shimano Alivio RD-M3100 Rear Derailleur features Shadow RD technology to keep the derailleur safe from trail obstacles

- Super low profile Shadow RD technology
- Largest Cog: 36
- Rear Derailleur Mount Type: Shimano Rear Direct Mount, 10x1 Standard
- Chain Wrap Capacity (teeth): 45
- Max Front Difference: 22
- Cage Length: Long
- Rear Der/Shifter Compatibility: Shimano Mountain
- Drivetrain Speeds: 9
- Color: Black

Original Shimano parts guarantee that all components work perfectly for optimum performance and maximum safety and longevity.