Altus FD-M310

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Dual SIS front index shifting Max. chainring size: 42T/48T Wide link design Modified cage tail shape for better tire clearance Total capacity: 20T Front difference: 10T For 66-69° chainstays Attributes Cable Pull Dual Chainline 47.5/50mm Chainstay Angle 66-69 FD Capacity 20T FD Mount Type Low 28.6/31.8/34.9mm Max Chainring 42T-48T Primary Color Black Speed 3x7/8 Swing Top Show more