⚙️ Shift like a pro, ride like you own the trail.
The SHIMANO GRX RX820 12-Speed Rear Derailleur in black (GS cage) offers precision 12-speed shifting compatible with 10-45t MTB cassettes. Featuring interchangeable cages, Shadow RD+ design, and an ON/OFF chain stabilizer switch, it delivers smooth, reliable performance on varied terrain while preventing chain slap and drops.
| Number of Teeth | 13 |
| Manufacturer | Shimano |
| UPC | 192790303635 |
| Item Package Dimensions L x W x H | 6.3 x 5 x 3.9 inches |
| Package Weight | 0.44 Kilograms |
| Item Dimensions LxWxH | 6.25 x 4 x 4.75 inches |
| Brand Name | SHIMANO |
| Suggested Users | mens |
| Number of Items | 1 |
| Part Number | IRDRX822GS |
| Size | GS, 12-Speed |
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