In the spirit of sustainability, high-quality products with minor visual defects and perfect function are given a 2. Chance. These are new products, demonstration models or returns that are carefully checked by our experts.
Each item is unique. We ask for your understanding that a detailed individual error description is not possible. The statutory warranty and manufacturer's guarantee apply to 2nd Chance items.
Instead of telling gravel riders what they needed, Shimano asked them what they wanted for their offroad adventures. The result are the Shimano GRX components which represent the first series especially developed for riding on rough roads and through gravel. The Shimano GRX sets itself apart from the rest of the component world with its gravel specific ergonomics, optimized gearing options, rugged reliability as well as a quiet and stable drivetrain.
The mechanical Shimano GRX rear derailleurs, RD-RX810 and RD-RX812, are characterized by quiet, smooth, precise and reliable shifting even in the most demanding terrain. This is mainly due to the Shadow RD+ chain stabilisation system which prevents the chain from slapping and dropping as well as from unnecessary movements of the derailleur's cage, thus ensuring uninterrupted shifting performance. That is why an On/Off switch can be found next to the upper pulley, much like Shimano’s mountain bike derailleurs. When activated the rear derailleur pivot takes a firm hold to reduce excessive movement, noise and general "chain chatter".
The RD-RX810 rear derailleur will accommodate cassettes with 11-30 teeth up to cassettes with 11-34 teeth. Instead the RD-RX812 rear derailleur is suitable for 11-40 and 11-42 teeth cassettes.
Material: aluminium (painted), glass fiber reinforced polymer (GFRP)
Weight supplement: RD-RX810-GS)
approx. 267 gram (RD-RX812-GS)
(manufacturer's specs
| Product name: | Shimano GRX RD-RX810 / RD-RX812 Rear Derailleur - Shadow RD+ | 11-speed | medium (GS) - black - 2nd Choice |
| Manufacturer: | Shimano Parts |
| Item code: | SHI679316 |
| Activity: | Cycling |
| Usage bikesport: | Road Bike, Allroad / Gravel |
| Shifting system (manufacturer): | Shimano |
| Shifting system: | 11-speed |
| Shifting actuation: | Mechanical |
| Smallest sprocket: | 11 |
| Rear derailleur cage: | medium |
| Rear derailleur max. teeth: | 34 |
| Rear derailleur capacity: | 40 |
| Max. chainring spread teeth: | 17 |
| Rear derailleur version: | conventional |
| Model year: | 2023 |
| Color: | Black |
| Weight: | 255g |
| Manufacturer item code: | IRDRX810 (RD-RX810-GS)IRDRX812 (RD-RX812-GS) |
| Weight source: | Manufacturer |
| 2nd choice: | yes |
| Manufacturer page: | http://www.shimano-europe.com/ |
