
Best selling Rear derailleurs from Sram
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1. Sram GX Eagle Lunar
Derailleurs are supposed to do their job, whether climbing under load or during the final meters of a race stage. The GX Eagle derailleur reliably fulfills this task. An improved architecture ensures even better chain management. It has been designed to work seamlessly with the new 10-52 tooth cassettes while remaining fully backward compatible with 10-50. We leave the choice to the rider, as it should be. Part of the Eagle color system, it matches any chain and cassette color you choose. The GX Eagle derailleur simply always does its job.
Pro
- Easy to set up
- Good assembly
- Easy to install

2. Sram MY24 Rear Derailleur Red AXS without Battery
The centerpiece of the AXS ecosystem is lighter, more efficient, and more powerful than ever before. This wireless marvel accommodates cassette ranges from 10-28 to 10-36 and features larger jockey wheels to reduce chain movement and increase efficiency. The Orbit fluid damper ensures that everything stays in place when the going gets tough. A derailleur for 1x or 2x, on the road or off-road.

3. Sram GX Eagle AXS Lunar (Battery Not Included)
Rear derailleurs should do their job, whether uphill under load or on the last few metres of a stage. The GX Eagle AXS rear derailleur offers everything you love about AXS components. It's so smart that it protects itself thanks to its incredibly robust overload clutch. It has been developed for a wide range of rider preferences and is compatible with both the 10-52 and 10-50 extended cassette. The GX Eagle AXS rear derailleur is derived from the proven GX Eagle series and is there to get the job done. AXS-enabled component software makes it possible to both program and personalise SRAM and RockShox components.
Battery not included.

4. Sram Upgrade Kit Rear Derailleur Eagle 90/70 to GX AXS
Take the Eagle Transmission to the next level. Your entry into the AXS ecosystem, where the components are wirelessly connected. It is designed to make the transition from a mechanical to a wireless drivetrain as easy as possible. Therefore, it includes an AXS-compatible derailleur body, an AXS battery, and an AXS Pod Controller. Simply unscrew the derailleur cage assembly and the mounting screw from your mechanical Eagle 90 or 70 derailleur and attach them to the new GX Eagle Transmission derailleur body from the upgrade kit. The included Eagle T-Type PowerLock is also already included, so you can confidently reinstall your existing chain.

5. Sram Rear Derailleur SX Eagle 12SP
This new derailleur is your entry point into the SRAM Eagle ecosystem. It shares many features with the rest of the Eagle drivetrain, such as the proven design of the X-HORIZON body, specifically developed for SRAM 1x. It can accommodate 11-50T and 10-50T cassettes. The SX Eagle is compatible with most Eagle components, allowing you to easily customize and upgrade your bike when you're ready.
Details:
- The X-SYNC chainring technology offers higher efficiency, cleaner shifting, and quieter operation.
- The Cage Lock system allows riders of all skill levels to easily remove the wheels.
- Compatible with all Eagle groups.
- Weight: 510 g.
- Maximum sprocket: 50T.
- Reference: 00.7518.155.000 / Rear Derailleur SX Eagle Aluminum 12 Speed Black A1.
Features:
- Long cage group SRAM SX Eagle 12V gear 12.

6. Sram GX1
Technologies
Cage Lock
Thanks to the Cage Lock technology in the derailleur, removing and installing the rear wheel as well as chain installation is faster and easier than ever. Simply push the cage forward to release the chain tension and lock it in place.
Roller Bearing Clutch
The Type 2 derailleur was designed for the X0 and X9 product families and offers maximum drive stability – even on challenging terrain. With Roller Bearing Clutch technology, the SRAM Type 2 puts an end to wobbling derailleurs and clattering chains – without sacrificing precision.
X-Actuation
The X-Actuation technology, specifically developed for SRAM 1X, ensures precise and consistent shifting across the entire 10-42 tooth cassette.
X-Horizon
The parallelogram design of this derailleur limits movement along the horizontal axis, eliminating so-called "ghost shifting" while simultaneously reducing shifting force. The large offset of the upper jockey wheel ensures a constant chain distance in every gear for faster and more accurate shifts.
X-Sync
SRAM's X-Sync 1X chainrings deliver top performance and durability. The long SRAM X-Sync tooth edges engage the chain earlier than traditional triangular teeth. The sharp and narrow tooth profile, along with the rounded angled edges, support chain guiding. To provide optimal performance even in muddy terrain, the X-Sync chainrings feature recesses for clearing dirt and mud from the inner chain links and rollers. The X-Sync chainrings, made in Germany, are a crucial component of SRAM's 1X drivetrain.
• Weight: 265 g
• Application: MTB
• Mounting type: Frame mount
• Material type: Aluminum
• Number of gears: 11-speed
• Derailleur cage: long
• Derailleur capacity: long
• Max. largest sprocket: 42 teeth.

7. Sram Apex 1 rear derailleur long cage 11-speed
The SRAM Apex 1 drivetrain offers a wide range of gears and the simplicity of shifting, allowing you to easily go wherever you want. The Apex 1 rear derailleur makes this gear selection a reality with clean and precise shifts, thanks to the SRAM X-Horizon geometry and our Roller Bearing Clutch system.
Features:
- The X-Horizon design reduces shifting force, eliminates ghost shifting, and chain chatter.
- Compatible with SRAM 1x road drivetrain systems with 10 and 11 speeds.
- With Cage Lock technology, removing and installing the wheel is easier than ever.
- Equipped with the Roller Bearing Clutch.
- The large distance of the upper pulley automatically adjusts the chain gap.
- The long cage accommodates a maximum 42-tooth sprocket.
Specifications:
- Cage size: Long
- Maximum tooth count: 42t
- Rollers: Sealed bearing
- Compatible with SRAM 1x road drivetrain systems with 10 and 11 speeds
- Weight: 314 g
- Material of outer cage: Aluminum
- Material of inner cage: Steel
- For 2x10V systems.
- Compatible with 11-42T cassette.

8. Sram X01 Eagle Lunar
Shifting at a new level – for this, the X01 Eagle derailleur features an improved architecture for optimized chain management. The X01 Eagle derailleur is designed to work seamlessly with 10-52 tooth cassettes, while still being fully backward compatible with 10-50. As part of the Eagle color system, it matches any chain and cassette color you choose.

9. Sram Nx
The Sram NX X-Horizon rear derailleur provides the same smooth, reliable shifting as XX1 - from the larger offset of the upper shifting roller to the 12-tooth X-Sync Horizon chain idler. Because unwanted chain movement is a thing of the past, the X-Horizon allows for faster shifts, eliminates "ghost shifting" and reduces shifting force and beating chains. Cage Lock Horizon technology makes rear wheel removal and installation easier than ever.
The X-Horizon design reduces shifting force, "ghost shifting" and beating chains.
X-Sync Horizon chain idler with 12 teeth
Fully compatible with all Sram MTB 1xHorizon drives
The most affordable 1x rear derailleur with a wide range of functions

10. Sram GX 2x10
The GX 2x10 rear derailleur relies on SRAM's legendary switching power and offers incredible switching speed and precision. EXACT ACTUATION technology ensures a much more uniform switching result. The ROLLER BEARING CLUTCH technology offers maximum drive stability - even on murderous and highly demanding terrain. CAGE LOCK technology makes rear wheel removal and installation easier than ever.
EXACT ACTUATION for precise and reliable performance in the 10-speed range
Cage lengths: short, medium and long
Also available without ROLLER BEARING CLUTCH
