The Shimano GRX RD-RX827 SGS Di2 12-speed rear derailleur is a highly advanced component specifically designed for gravel and cyclocross riding. It features electronic shifting technology that ensures a precise and reliable gear-changing experience. Weighing in at 449 g and built with a robust construction, this derailleur is both lightweight and durable. The innovative Shimano Shadow ES technology enhances chain stability, while the integrated RD protection function automatically returns the motor to its original position after an impact. The protected battery is securely housed and can be easily removed for charging, making it convenient for off-road use. Wireless data transmission via Bluetooth and Wi-Fi allows for easy connectivity to other devices, ensuring seamless integration into your bike setup.
Bike area of use | Gravel |
Cage length | Long |
Item number | 59428452 |
Manufacturer | Shimano |
Category | Rear derailleurs |
Product Safety | |
Release date | 19/6/2025 |
Colour | Black |
Exact colour description | Black |
Cassette compatibility | 12-speed |
Maximum pinion size | 51 x |
Shift capacity | 41 x |
Bike area of use | Gravel |
Cage length | Long |
Fixation rear derailleur | Direct mounting |
Design rear derailleur | The Shadow |
Switching system | Electric |
Circuitry | Low-Normal |
Model year | 2025 |
Bicycle product series | Shimano - GRX |
Country of origin | Japan |
CO₂-Emission | |
Climate contribution |
Weight | 449 g |
Product Safety |
How often does a product of this brand in the «Rear derailleurs» category have a defect within the first 24 months?
Source: GalaxusHow many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?
Source: GalaxusHow often is a product of this brand in the «Rear derailleurs» category returned?
Source: Galaxus
