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

The Shimano RDM310-Smart rear derailleur has a Wide Link design for increased rigidity and precise shifting.

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