Shimano GRX RD-RX817 Rear Derailleur 11-Speed Long Cage Di2 1x Black

Product Description
The Shimano GRX RD-RX817 rear derailleur is a premium 11-speed Di2 gravel derailleur built for smooth, reliable shifting across mixed surfaces. Designed specifically for 1x GRX drivetrains, it uses Shimano’s electronic Di2 platform and a gravel-tuned clutch to improve chain stability and shifting confidence on rough terrain.
With long cage capacity and support for cassettes up to 42T, it is a strong replacement or upgrade option for compatible gravel and all-road builds using Shimano road Di2 controls.
Key Features
Genuine Shimano GRX RD-RX817 rear derailleur
Designed for 11-speed Di2 drivetrains
Built for 1x GRX setups
Long cage design
Integrated clutch for improved chain stability
Gravel-tuned clutch tension for mixed-surface riding
Smooth, precise electronic shifting
Black finish
Retail packaged
Specifications
Brand: Shimano
Series: GRX
Model: RD-RX817
Product Type: Rear Derailleur
Drivetrain Speeds: 11
Cage Length: Long
Largest Cog: 42T
Chain Wrap Capacity: 31T
Rear Derailleur Mount Type: Shimano Rear Direct Mount
Rear Derailleur / Shifter Compatibility: Shimano Road Di2
Color: Black
Weight: 318g
Manufacturer Part Number: IRDRX817
Compatibility
Compatible with:
Shimano 11-speed Road Di2 shifter systems
Shimano GRX 1x drivetrain setups
Cassettes with up to a 42T largest cog, within drivetrain capacity limits
Frames using Shimano rear direct mount derailleur interface
Please confirm drivetrain setup, cassette range, and derailleur mount compatibility before purchase.
Included
Shimano GRX RD-RX817 rear derailleur
Warranty and Notes
Designed specifically for 1x Shimano GRX Di2 applications
Clutch tension is tuned for gravel and mixed-surface riding
Retail packaged
Includes only what is shown or described
Condition
New
Genuine OEM product
Retail packaged
Includes only what is shown or described
$149.95
318g
NEW
Shimano
Aluminum/Steel
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