Shimano GRX FD-RX815-F 2 x 11 Speed Di2 Braze-On Front Derailleur 50t max Chainring Snap buckle Perfect for BMX and track

Perfect for BMX and track bikes with 1/8 cog thickness

Anything that prevents fully bottoming out will reduce the self-bleeding capability

Forged alloy brake lever with alloy large shift lever and composite smaller lever

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Shimano GRX FD-RX815-F 2 x 11 Speed Di2 Braze-On Front Derailleur 50t max Chainring Snap buckle Perfect for BMX and trackGRX FD RX815 Di2 Front DerailleurOperates with Shimano Di2 for digital electronic shifting Chainline is increased by 2. 5mm over conventional front derailleurs for greater tire clearance in the front 17t front range provides more gear range in the front Double or Triple Double Drivetrain Speeds 11 Derailleur Capacity 17 Front Derailleur Clamp Braze on Front Derailleur Cable Pull Electronic Front Der Shifter Compatibility Shimano Road Di2 Max Ring