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Your cart is empty.Tiagra FD-4703 Front Derailleurs 45mm chain line. Aluminum links and clamp band to save weight and increase rigidity. Extra wide pivot link increases rigidity while reducing flex for improved shifting response. 50t maximum outer ring and 20t capacity. Plated steel chain cage. See Tech link below for compatibility info. Compatible only with ST-4703 or SL-4703 shifters. Item Specifications: Front Derailleur Clamp: 28.6 (1-1/8"), Front Derailleur Clamp: 31.8 (1-1/4"), Front Derailleur Cable Pull: Bottom Pull, Derailleur Capacity: 20, Front Derailleur Style: Traditional, Max Ring: 50, Double or Triple: Triple, Drivetrain Speeds: 10, Front Der/Shifter Compatibility: Road,
Greg Crowley
Reviewed in the United States on May 7, 2025
Was a replacement for my broken Shimano FD-4503 (3x9) that is no longer available. Had the 28.6mm option I needed. It took adjustments to get it fine tuned. Glad it worked as I love my steel frame touring bicycle.
Jean Paquette
Reviewed in Canada on May 17, 2021
The derailleur fitted my bike 9speed 3 front gears. It was not not easy to install though
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