Shimano Alivio M3100 3 x 9-Speed Front Derailleur

Size: 34.9 MM

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Members get an estimated $2.90 (10%) back on this item.
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Get smooth, quiet shifting across wide-range triple front chainrings with the Shimano Alivio M3100 front derailleur. Side Swing technology increases clearance for large wheels and short chainstays.


  • Side Swing technology allows for enhanced cable routing efficiency and provides lighter action and smoother operation
  • Side Swing design also delivers powerful outward shifting and increases clearance for bikes with large wheels (up to 2.3 in. wide tires on wider rims) and short chainstays
  • Wider traction range reduces chain rub for rear suspension bikes, making for a smoother and quieter ride
  • Optimized for 40/30/22-tooth triple chainring combinations and 9-speed chains
  • 50 mm chainline
  • Clamp band mount fits seat tubes from 28.6 to 34.9 mm


View the Shimano Alivio Product LineView all Shimano Front Derailleurs

Technical Specs

Best Use

Mountain Biking

Derailleur Type


Pull System

Dual Pull



Number of Chainrings

3 Chainrings

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