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This results in less noise
and a more efficient pedal stroke
· Combination10-12-14-16-18-21-24-28-32-36-40-45T
Chain Compatibility: All 12-speed road and mountain bicycle drivetrains including SRAM
featuring Shimano's new ultra-low friction surface treatment
Shimano Alivio Side Swing Front Derailleur (Direct Mount) 2x9-speed FD-M4020-D Bike Components & Parts This results in less noiseThe Shimano Alivio FD M4020 series 2x9 front derailleurs use Shimano's new side swing for enhanced cable routing, light action, and smooth operation. The new design also increases clearance for large wheels and short chain stays. Enhanced maneuverability with plus sized tires Wider clearance for large wheels Compatible with shorter chain stay Increased shifting efficiency and light operation force Efficient cable routing Smooth shifting performance
