Product Description
The Shimano GRX RD-RX815 rear derailleur is a premium 11-speed Di2 gravel derailleur built for smooth, reliable shifting across mixed surfaces. It uses Shimano’s electronic Di2 platform and a gravel-tuned clutch to improve chain stability and shifting confidence on rough terrain.
Unlike the RX817 1x-specific version, the RD-RX815 is designed for both 1x and 2x GRX drivetrains, making it a versatile option for gravel and all-road builds using Shimano road Di2 controls.
Key Features
- Genuine Shimano GRX RD-RX815 rear derailleur
- Designed for 11-speed Di2 drivetrains
- Compatible with 1x and 2x 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
Specifications
- Brand: Shimano
- Series: GRX
- Model: RD-RX815
- Product Type: Rear Derailleur
- Drivetrain Speeds: 11
- Cage Length: Long
- Largest Cog: 34T
- Chain Wrap Capacity: 38T
- Rear Derailleur Mount Type: Shimano Rear Direct Mount / 10x1 Standard
- Rear Derailleur / Shifter Compatibility: Shimano Road Di2
- Color: Black
- Weight: 287g
- Manufacturer Part Number: IRDRX815
Compatibility
Compatible with:
-
Shimano 11-speed Road Di2 shifter systems
-
Shimano GRX 1x drivetrain setups
-
Shimano GRX 2x drivetrain setups
- Cassettes with up to a 34T largest cog, within drivetrain capacity limits
- Frames using Shimano Rear Direct Mount or 10x1 standard derailleur interface
Please confirm drivetrain setup, cassette range, and derailleur mount compatibility before purchase.
Included
- Shimano GRX RD-RX815 rear derailleur
Warranty and Notes
- Designed for 1x and 2x Shimano GRX Di2 applications
- Clutch tension is tuned for gravel and mixed-surface riding
- Includes only what is shown or described
Condition
- New
- Genuine OEM product
- Includes only what is shown or described
