Shimano SGS RD-M310 Altus rear derailleur Black . Rear derailleur with 15-tooth tensioner and 13-tooth guide pulleys that reduce noise and wear. Compatible with HG 8/7 speed chains.

Features :

• Linkage design for added rigidity and precise shifting.
• Advanced light action.
• 13/13T Pulley (RD-M360)
• MegaPulley (RD-M310)
• Oversize 15-tooth tensioner and 13-tooth guide pulleys reduce noise and wear.
• SMART CAGE pulley plate (RD-M310)
• Compatible chain: HG 8/7 speed.
• Maximum top sprocket: 14T
• Minimum top sprocket: 11T
• Pulley/Teeth: 13/15D
• Maximum front difference: 20D
• Total capacity: 43D
• Reference: RDM310DL