SRAM GX Eagle Transmission T-Type AXS Rear Derailleur - 12-Speed, 52T, UDH Hangerless, Steel Cage, Black, No Battery

This SRAM GX Eagle Transmission T-Type AXS rear derailleur is the 12-speed, 52T model with a steel cage and black finish. It uses SRAM's hangerless Full Mount system on a compatible UDH frame interface. The AXS battery is not included. This is a replacement derailleur, not a complete drivetrain conversion kit.

Will it work on my bike?

You need a Transmission-compatible frame with the UDH interface and the appropriate T-Type chain, cassette and compatible chainring setup. The derailleur mounts around the rear axle interface after the UDH hanger is removed. It does not simply screw into a conventional derailleur hanger, and it is not a direct replacement for a non-T-Type GX Eagle AXS derailleur on an older drivetrain.

For a new build or conversion, account for the compatible AXS controller, battery and charging equipment as well as the rest of the drivetrain. Existing AXS controllers can work with Transmission when correctly paired, so check what you already own before buying duplicate parts. Verify frame compatibility using SRAM's bike compatibility information and the bike manufacturer's guidance.

Why choose GX Transmission?

GX brings the Transmission mounting and shifting system into a durable, serviceable package. Its battery position helps shield the battery from impacts, while replaceable skid plates and outer-link parts give you options if a rock leaves its signature. The cage and clutch assembly can be removed without tools for the specified service procedures. The steel inner cage favors robustness over the lightest possible build.

The derailleur is one part of the Transmission system. Correct chain length, setup-key position and installation sequence still matter; hangerless does not mean setup-free. Follow SRAM's procedure for the bike rather than treating it like a conventional limit-screw and B-gap adjustment.

See the whole GX T-Type system

Our GX T-Type overview and WC GX Transmission video show how the components work together. Browse T-Type Transmission components if you are planning a complete setup.

• 12-speed wireless AXS derailleur for the T-Type Transmission system
• Full Mount hangerless attachment requires a compatible UDH frame interface
• Steel inner cage, replaceable protective parts and serviceable cage/clutch assembly
• AXS battery not included