A classic design thats backwards compatible with older 3x9 road drivetrains, the microSHIFT R439 front derailleur features quality construction and modern functionality that provides smooth shifting.Features-Compatible with 9-speed Shimano road drivetrains-Designed for use with 30/42/52t chainringsItem Specifications-Double or Triple:Triple-Drivetrain Speeds:9-Derailleur Capacity:22-Front Derailleur Clamp:Braze-on-Front Derailleur Cable Pull:Bottom Pull-Front Der/Shifter Compatibility:Shimano Road-Max Ring (teeth):52-Front Derailleur Style:Traditional