12-Speed Rear Derailleurs
6 rear derailleurs that work with a 12-speed drivetrain. Speed compatibility here comes from each part's recorded specification, not from guesswork — mixing speeds across a drivetrain is the single most common upgrade mistake.
| Component | Speeds | Freehub | From |
|---|---|---|---|
| SRAM NX Eagle Rear Derailleur12-speed, Type-3 clutch, 50T max, works with 11-50T HG cassette | 12-sp | Shimano HG, SRAM XD / XD-R | $61.95 |
| SRAM SX Eagle Rear Derailleur12-speed, Type-3 roller bearing clutch, 50T max | 12-sp | Shimano HG, SRAM XD / XD-R | $61.95 |
| Shimano SLX RD-M7100-SGS12-speed Hyperglide+ clutch, 51T max cog | 12-sp | Shimano Micro Spline | $75.29 |
| Shimano XT RD-M8100-SGS12-speed Hyperglide+ clutch, 51T max cog | 12-sp | Shimano Micro Spline | $113.00 |
| SRAM GX Eagle Rear Derailleur12-speed, Type-3 clutch, 52T max, Cage Lock | 12-sp | SRAM XD / XD-R | $120.68 |
| SRAM X01 Eagle Rear Derailleur12-speed, carbon cage, 52T max | 12-sp | SRAM XD / XD-R | $205.95 |
Speed and freehub compatibility comes from each component's recorded specification. A dash means no restriction is recorded for that part, not that it fits everything — check the individual component page.