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
