⚙️ Shift into the future of trail mastery — silent, smooth, unstoppable.
The Shimano GRX RX820 12-Speed Rear Derailleur delivers ultra-quiet, secure shifting optimized for rough terrain. Featuring an adjustable chain stabilizer with ON/OFF switch and Shadow RD+ low-profile design, it ensures reliable, drop-free performance compatible with HG 12-speed chains.
| Mounting Type | Clamp-On Mount |
| Number of Teeth | 36 |
| Manufacturer | Shimano |
| UPC | 192790303611 |
| Item Package Dimensions L x W x H | 14 x 10 x 3 inches |
| Package Weight | 1 Pounds |
| Item Dimensions LxWxH | 6.5 x 6 x 4.25 inches |
| Brand Name | SHIMANO |
| Suggested Users | mens |
| Number of Items | 1 |
| Part Number | IRDRX820 |
| Size | 12-Speed |
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