Shimano Altus RD-M310 Rear Derailleur - 7 8 Speed Long Cage Black MFPN=78920 Flexible head adjusts and rotates

Flexible head adjusts and rotates to fit various bike sizes and styles

Very thick side walls less likely to dent on hang-ups

Set of three

more comfort

Shimano Altus RD-M310 Rear Derailleur - 7 8 Speed Long Cage Black MFPN=78920 Flexible head adjusts and rotatesShimano Altus RD M310 Rear Derailleur 7 8 Speed Long Cage Black. 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 TECH SPECS Largest Cog 34 Color Black Rear Der Shifter