Altus M310 7/8 Speed Bicycle Rear Derailleur - Black - High Performance Bike Gear for Mountain & Road Cycling

Shimano Altus RD-M370/M310 Rear Derailleurs

• 7/8-Speed
• 13t upper and 15t lower pulleys
• Largest Cog: 34
• Rear Derailleur Mount Type: 10x1 Standard
• Chain Wrap Capacity (teeth): 43
• Cage Length: Long
• Rear Der/Shifter Compatibility: Shimano Mountain
• Drivetrain Speeds: 7 , 8
• Weight: 326