SRAM GX Eagle Mechanical Rear Derailleur 12-Speed Long Cage 52T Lunar Grey
The SRAM GX Eagle rear derailleur delivers precise and dependable mechanical
shifting for SRAM 1x12-speed Eagle mountain-bike drivetrains. Its updated
long-cage architecture improves chain management while providing the capacity
required for wide-range 10-52T cassettes.
This version is backward-compatible with SRAM 10-50T Eagle cassettes,
allowing it to serve as either an upgrade or replacement across multiple
generations of mechanical Eagle drivetrains. SRAM X-ACTuation maintains a
consistent cable-pull ratio for accurate shifting across the cassette.
X-Horizon geometry limits parallelogram movement to the horizontal axis,
reducing shift force and unwanted ghost shifting. A Roller Bearing Clutch
controls chain movement over rough terrain, while Cage Lock simplifies rear
wheel removal and chain installation.
Features
- Cable-operated SRAM GX Eagle mechanical rear derailleur
- Designed for SRAM 1x12-speed Eagle drivetrains
- Compatible with 10-52T Eagle cassettes
- Backward-compatible with 10-50T Eagle cassettes
- Updated long-cage architecture improves chain management
- X-ACTuation cable-pull technology provides consistent shifting
- X-Horizon geometry reduces shift force and unwanted ghost shifting
- Roller Bearing Clutch minimizes chain bounce and chain slap
- Cage Lock creates chain slack for easier wheel removal and installation
- Large upper-pulley offset maintains a consistent chain gap
- Durable aluminum long cage
- Lunar Grey GX Eagle signature finish
Specifications
| Brand |
SRAM |
| Series |
GX Eagle |
| Model ID |
RD-GX-1-B2 |
| Derailleur Type |
Mechanical rear derailleur |
| Drivetrain Configuration |
1x12-speed |
| Cable-Pull Ratio |
SRAM X-ACTuation |
| Cage Length |
Long |
| Maximum Cassette Cog |
52T |
| Cassette Compatibility |
SRAM Eagle 10-50T and 10-52T |
| Chain Compatibility |
SRAM Eagle 12-speed |
| Cage Material |
Aluminum |
| Pulley-Bearing Material |
Steel |
| Clutch Technology |
Roller Bearing Clutch |
| Cage-Locking Technology |
Cage Lock |
| Mounting Type |
Conventional derailleur hanger |
| Color |
Lunar Grey |
| SRAM OEM MPN |
00.7518.133.000 |
| Retail-Equivalent MPN |
00.7518.137.000 |
| Retail-Equivalent UPC |
710845853487 |
Included
- SRAM GX Eagle 12-speed mechanical rear derailleur
Please note: This is a conventional cable-operated GX Eagle
derailleur. It is not an AXS wireless derailleur and is not compatible with
SRAM Eagle Transmission or T-Type Full Mount installation.
A compatible SRAM Eagle 12-speed shifter, chain, cassette, shift cable and
housing are required. These components and the Eagle chain-gap adjustment
gauge are not included unless specifically pictured.
This is a genuine SRAM OEM component and may be supplied without retail
packaging. Please review the listing photographs for the exact included
hardware and cosmetic condition.
Professional installation and drivetrain adjustment are recommended. Please
confirm cassette size, shifter compatibility, derailleur-hanger condition and
chain length before purchasing.
