Experience the ultimate in precision and rigidity with the Shimano RD-M310 Altus 7/8-Speed Smart Cage Rear Derailleur. Its innovative Wide Link design ensures precise shifting while the oversized tensioner and guide pulleys minimize noise and wear. The SMART CAGE pulley plate increases ground clearance, making it perfect for all terrain. Enjoy advanced light action and compatibility with Shimano HG 6/7/8 speed chains. Upgrade to the RD-M310 for unparalleled performance.