The Shimano RD-RX817 GRX Di2 rear derailleur delivers quiet, smooth and precise shifting across demanding gravel terrain.
Engineered with SHADOW RD+ chain stabilisation, it minimises chain bounce and ensures reliable performance on rough surfaces. This 11-speed derailleur features Di2 electronic shifting for swift, accurate gear changes and is constructed from cold-forged aluminium for lightweight durability. Fully compatible with 11-speed E-tube Di2 systems and HG chains, it supports gear ratios up to 11-42T and weighs just 318g. Purpose-built for single-chainring gravel setups, it combines advanced technology with rugged reliability.
Features
- Shimano GRX, with its gravel specific ergonomics, optimized gearing options, rugged reliability, and quiet and stable drivetrain, sets itself apart from the rest of the component world
- Low profile Shadow Plus design 11-speed rear derailleur with Di2 technology for fast and precise shifting performance
- Shadow Plus uses a chain stabilising switch that when on will reduce chain bounce in rough terrain maintaining more stable drive and shifting
- High tolerance cold forged aluminium link plates and body construction is extremely light and durable
- 11-speed E-tube Di2 compatible
- Compatible with 11-speed HG chains
- Wide gear ratio compatible up to 11-42T
- For use with single chainset
Specification
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Use: Gravel
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Group: GRX Di2
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Model: RD-RX817
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Mount Type: Direct Mount
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Gear front: 1-speed
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Gear rear: 11-speed
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Compatible Chain: HG-EV 11-speed, HG-X11
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Max. teeth large sprocket: 42T
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Min. teeth large sprocket: 40T
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Max. teeth small sprocket: 11T
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Min. teeth small sprocket: 11T
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Total Capacity: 41T
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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 (pcs): 1
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E-tube connector (pcs): 0
Material
Weight
Contents
- 1 x Shimano GRX 11-speed Rear Derailleur Di2 RD-RX817
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.
