SRAM GX Eagle 1×12 Speed Rear Derailleur Parts

True to its roots, the GX trim offers tremendous value and performance.  

Why spend hundreds when you can get the same Eagle performance at a fraction of the cost.  The Eagle GX derailleur is fully cross-compatible with the entire Eagle range so you can mix and match components to suit your budget. 

The GX Eagle derailleur features all of the tech that’s packed into SRAM’s brilliant X-HORIZON derailleur range, and the latest models (Lunar Grey) benefit from the recent tweaks to the cage architecture to improve chain retention and increase the range to work with the new 10-52t cassettes.

Who’s this item for: GX Eagle is the workhorse of the SRAM range and offers crisp and reliable shifting performance with wallet-friendly pricing. It’s a great option for Trail/All Mountain riding and Enduro racing.

Number of gears: This is a SRAM Eagle 12-speed derailleur.

Weight: 290g.

Chain and cassette compatibility: Best paired with SRAM Eagle 12 speed chains and cassettes.

Max cassette range: 

• The new models with the Lunar Grey colour are compatible with up to a 10-52t cassette. 
• The black ones have a max of 10-50t.

Clutch style: Type 3 Roller Bearing Clutch maintains precise shifting while greatly reducing derailleur bounce and chain slap.

Cage length: All Eagle derailleurs use a long cage.

Jockey wheel tooth count (top / bottom): 12 tooth top, 14 tooth bottom.

Highlights of the Type 3 Eagle derailleurs are:

• A new stronger Type 3 roller bearing clutch
• Aluminium cage, steel springs. 
• Completely revised B-Bolt attachment  that is significantly more durable
• 14t X-SYNC Lower Jockey Wheels to accommodate the huge 520% cassette range and run a bit smoother
• Repositioned cage lock button – it’s now tucked away to keep it out of the trail debris
• Eagle Pulley Technology gives crisper shifts, quieter operation and increased efficiency.

Please note:  Adjusting your B-tension on Eagle derailleurs can be tricky.  We recommend using Sram’s chain gap tool