Take on new challenges with the Shimano Altus RD-M310! With its Smart Cage design and Wide Link construction, this 7/8-speed rear derailleur offers improved rigidity and precise shifting for a smoother, more confident ride. Conquer any terrain with the Altus RD-M310. 

• Wide Link design for more rigidity and precise shifting
• Advanced light action
• 13/13T pulley (RD-M360)
• MegaPulley (RD-M310)
• Oversize 15-teeth tensioner and 13-teeth guide pulleys reduce noise and wear
• SMART CAGE pulley plate (RD-M310)
• Total capacity: 43T