Shimano GRX FD-RX815-F 2 x 11 Speed Di2 Braze-On Front Derailleur 50t max Chainring MFPN=TB00201300 B-RAD system mounting plate and

B-RAD system mounting plate and hardware

35 ISO 584 Bead Wire Belted Tread/Sidewall Color Bk/Bsk PSI 55 Weight (Grams) 870 TPI 50 Durometer Features PGRD/REF Reflective Sidewall Yes

Twin-tube damping for unparalleled small bump compliance

One Way Storm 1 has an extra light and stiff HM carbon shaft for optimal swing weight

Shimano GRX FD-RX815-F 2 x 11 Speed Di2 Braze-On Front Derailleur 50t max Chainring MFPN=TB00201300 B-RAD system mounting plate andGRX 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