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Medium clamp Shimano Alivio FD-M3100MM4 Side Swing derailleur.
The SHIMANO ALIVIO FD-M3100 3x9 speed derailleurs use the new improved SIDE SWING cable routing from SHIMANO to provide a light action and smooth operation.
The new design also increases the clearance to make it compatible with large wheels and short chainstays.
Smooth and quiet front shifting in the mountains.
More powerful outward shifting.
The wider traction range reduces chain friction for bikes with rear suspension.
Extra wide range with a triple chainring of 40-30-22D.
Wide frame mounting compatibility.
Compatible with 2.3' tyres on wider rims.
Chainline: 50 mm.
Chainstay angle: 66-69°.
Front speeds: 3.
Rear speeds: 9.
Top sprocket teeth: 40T.
Total capacity: 18T.
Difference between large and medium chainring teeth: 10T.
Clamp mount size of 34.9 mm.
Clamp mount sizes of 28.6 and 31.8 with S and M adapters respectively.
