The SRAM GX Eagle is a 12 speed, long cage rear derailleur that works with both 10 to 50t and 10 to 52t Eagle cassettes. Its updated cage improves chain retention and shift precision.

What it's for

A replacement or upgrade derailleur for SRAM Eagle 1x12 mechanical drivetrains.

How it works

X-HORIZON: a straight parallelogram keeps the derailleur moving only side to side. That prevents ghost shifting and lowers shift force, and the large upper pulley offset keeps the chain gap constant.

Roller Bearing Clutch: controls the cage so the derailleur does not bounce and the chain does not slap.

Cage Lock: push the cage forward and lock it to make chain slack for wheel removal and chain installation.

X-Actuation: SRAM's cable pull ratio for 1x drivetrains. It keeps shifts consistent across the whole cassette.

Eagle: SRAM's 1x12 system with a 520% gear range, about the same range as a 2x11 drivetrain.

Compatibility

• Cassette: SRAM Eagle 10 to 50t and 10 to 52t
• Shifter: SRAM Eagle 12 speed mechanical
• Chain: SRAM Eagle
• Drivetrain: 1x
• Does not fit: Eagle Transmission (T-Type) parts

Specs

• Speeds: 12
• Cage: long, aluminum
• Max cog: 52t
• Pulley bearings: steel
• Color: Lunar
• Model: RD-GX-1-B2
• Part number: 00.7518.137.000

Pairs with

• SRAM GX Eagle XG-1275 Cassette 10-52T
• SRAM GX Eagle Chain