Shimano GRX Di2 FD-RX815 front derailleur braze-on 2/11-speed

SHIMANO GRX DI2 Front Derailleur 2x11-speed

FD-RX815-F

SHIMANO GRX - DI2 - Front Derailleur - Gravel - 2x11-speed

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.

• Wider tire clearance
• Chainline +2.5 mm vs. conventional road FD
• Wider range front gearing
• 17T front range

Specifications

• Series: SHIMANO GRX DI2
• Weight: 135 g
• 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: Yes
• Link bushings: 2
• Mount: Brazed-On
• Speeds Front: 2
• Speeds Rear: 11
• Top gear teeth: 46-50T
• Total capacity: 17T

Technologies

SEIS - SHIMANO ELECTRONIC INTELLIGENT SYSTEM
The SEIS innovative shift technology is still based on the SHIMANO INDEX SYSTEM (SIS) that has proved its superior gear changing characteristics over the years. The big difference is that in this case, the shifting action is provided for by electronics instead of mechanics.
No power is needed to shift, which gives important advantages since it is easier now to always keep a tight grip on the handlebar and to keep your concentration on riding instead on shifting.
The shift system allows accurate and effortless shifting in difficult circumstances for example when you have cold hands or when you are completely exhausted. Furthermore, the shifting performance will never be affected by contaminated or stretched cables since the shifting signal is transferred electronically. The operating buttons work similarly to mechanical DUAL CONTROL LEVER so you don’t need to re-program your mind for the SEIS.

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