Matching the Shimano GRX cranksets, the GRX Di2 FD-RX815 2 x 11-speed front derailleur is engineered with a 2.5 mm wider chain line compared to conventional road derailleurs.
This extended chain line geometry accommodates tyre widths up to 42 mm, making it ideal for rough terrain riding. The derailleur delivers wider range front gearing and enhanced tyre clearance, supporting gravel, cyclocross, and mixed-surface adventures. Built from aluminium, steel, and carbon fibre, it weighs just 131g and features electronic shifting via Shimano's Di2 system with E-Tube firmware updates. Brazed-on mounting, down-pull cable routing, and compatibility with HG-EV and HG-X11 11-speed chains complete this versatile component.
Features
- Chainline +2.5mm vs. conventional road FD
- Wider tire clearance
- Wider range front gearing
Specification
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Use: Gravel, Road, Cyclocross
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Group: GRX Di2
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Model: FD-RX815-F
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Mounting: Brazed-on
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Cable route type: Down-Pull
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Gear front: 2-speed
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Gear rear: 11-speed
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Top gear teeth: 46-50T
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Total capacity: 17T
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Compatible chain: HG-EV 11-speed, HG-X11
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Chain stay angle: 61-66°
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Chain line: 46mm
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Master unit: No
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Firmware update by E-Tube Project: Yes
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E-Tube port: 1
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E-Tube connector: 1
Material
Colour
Weight
Contents
- 1 x Shimano GRX Di2 FD-RX815 2x11-Speed Front Derailleur Braze On
We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colours, materials and pricing. Due to supply chain issues, compatible parts may be substituted at any time without notice.
Weights are based off pre-production products at time of publication. Weights may vary in final production.
