The SHIMANO GRX RX815 Di2 front derailleur delivers quick and smooth front shifting even under high pedaling torque.

It’s designed for a wider, 17T front range and it has programmed chain guide trim settings and can be used in full or semi SHIMANO SYNCHRONIZED SHIFT modes.

Average weight 135 g Action_Down Swing _ Action Down Swing Chain line (mm) 46 Chain stay angle 61-66 Compatible chain HG-EV 11-speed/ HG-X11 E-TUBE connector (pcs) 0 E-tube port (pcs) 1 Firmware update by E-TUBE Project _ Link bushings 2 Mount_Brazed-On _ Mount Brazed-On Speeds_Front 2 Speeds_Rear 11 Top gear teeth 46-50T Total capacity 17T