A Shadow-design 9-speed MTB rear derailleur with low profile and chain stabiliser for smooth, quiet shifting.

• Model: RD-M3100-SGS (Alivio)
• 9-speed, for 1x9 / 2x9 / 3x9
• Long (SGS) cage
• Max low sprocket: 36T
• Total capacity: 45T, max front difference 22T
• Shimano SHADOW RD low-profile design
• Integrated adjustment barrel