Shimano - Altus RD-M310 Rear Derailleur - 7, 8 Speed, Long Cage, Black - Black

The Shimano RDM310-Smart rear derailleur has a Wide Link design for increased rigidity and precise shifting. Features Oversized 15-tooth tensioner and 13-tooth guide pulleys reduce noise and wear SMART CAGE pulley plate provides more ground clearance Advanced light action with precise shifting Compatible with Shimano HG 6/7/8 speed chains 7/8-Speed 13t upper and 15t lower pulleys Specifications Color: Black 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 Manufacturer Part Number: ERDM310DL