Product Description
The Shimano GRX 11-speed Di2 rear derailleur integrates electronic shifting with silent and uninterrupted rear operation on rough terrain. An adjustable Shimano Shadow RD+ clutch prevents chain slapping and drops.
Product Specifications
- Weight: 1.81 pounds
- Gear Speeds: 11
- Bike compatibility: Universal
- Cage Length: Long
- Model #: IRDRX817
- Largest Cog: 42
- Warranty: Multiple Warranties and/or Time Frames Apply. To obtain a copy of the manufacturer’s or supplier’s warranty for this item prior to purchasing the item, please call Target Guest Services at 1-800-591-3869
Product Highlights
- Operates with Shimano Di2 for digital electronic shifting
- Gravel-tuned clutch tension provides smooth and reliable mixed surface shifting
- For 1x drivetrains
- Rear Derailleur Mount Type: Shimano Rear Direct Mount
- MPN: IRDRX817, UPC: 192790443171







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