Shimano Alivio FD-M3120-E Front Derailleur - 2x9-Speed Side Swing Front Pull E-Type Mount 36t Max ModelNumber=G0409 only looking at the actual

only looking at the actual bike drive system can tell you what to use

Foldable Kevlar aramid bead with added Bead Shield provides extra reinforced protection throughout the bead Flat Protection Tread Color Black Weight 725 Defined Color Black ISO Width (mm) 40 ISO Diameter 622 / Road / 29" Tire Intended Use Cyclocross Tire Diameter 700c Tire Bead Folding Labeled Size 700 x 38 Tire Type Clincher

And with so much baseline power on hand there is more range than ever before to tune the ride qualities to exactly how you want

A grid fleece interior holds heat close while pulling sweat to the surface

9mm 170mm Black

Shimano Alivio FD-M3120-E Front Derailleur - 2x9-Speed Side Swing Front Pull E-Type Mount 36t Max ModelNumber=G0409 only looking at the actualThe Shimano Alivio FD M3120 Front Derailleur features side swing action for enhanced cable routing and smooth operation. For 2x9 drivetrains Chainstay angle: 64 69 degrees Chainline: 48. 8mm 51. 8mm Double or Triple Double Drivetrain Speeds 9 Front Derailleur Clamp E Type Front Derailleur Cable Pull Front Pull Front Der Shifter Compatibility Shimano Mountain Max Ring (teeth) 36 Front Derailleur Style Side Swing