Mechanical Shifting at the Eagle Transmission Level

The SRAM Eagle 90 T-Type Groupset brings the Full Mount derailleur architecture of SRAM's AXS Transmission platform to a mechanical shifting system - delivering the structural robustness, T-Type drivetrain compatibility, and simplified setup process of Eagle Transmission without requiring wireless electronic shifting. For riders who want the Transmission platform's durability and frame interface advantages but prefer mechanical cable shifting, the Eagle 90 is the first complete mechanical option within the T-Type ecosystem.

The Eagle 90 groupset requires a frame with a UDH (Universal Derailleur Hanger) interface - the Full Mount attachment method grips both sides of the frame at the UDH point rather than using a traditional single-bolt hanger. This creates a significantly stronger connection between the derailleur and frame that reduces flex and improves shifting consistency under load. Confirm your frame uses a UDH interface before purchase - the Full Mount system is not compatible with standard derailleur hangers.

The groupset includes the Eagle 90 rear derailleur, Eagle 90 T-Type Actuation shifter, Eagle 90 DUB crankset with T-Type chainring and bash guards, GX Eagle XS-1275 T-Type cassette, and the GX Eagle Transmission Flattop chain. Front derailleur and brakes are not included.

• Sleek and sturdy forged aluminum Eagle 90 DUB crankset with a signature silver T-Type chainring equipped with removable bash guards
• Premium double-click Eagle 90 T-Type Actuation mechanical shifter is built with modern shift ergonomics and a premium textured aluminum lever touchpoint
• GX Eagle XS-1275 T-Type Cassette features 10-52t range and full X-SYNC technology for best inboard and outboard shifting performance under load
• Eagle 90 T-type rear derailleur features the revolutionary Hangerless Interface and Full Mount attachment method that creates a far stronger connection because it grips both sides of the frame (Requires frame with UDH interface)
• Full Mount Eagle 90 derailleur is the most rebuildable Eagle Transmission derailleur with replaceable B-Knuckle Inner/Outer Links Bash Guards Bushings Cage and Cage Assembly
• Includes the proven and reliable GX Eagle Transmission Flattop chain

Full Mount Derailleur - The Most Rebuildable Eagle Transmission Derailleur

The Eagle 90 rear derailleur uses the Full Mount attachment with the Hangerless Interface that creates a far stronger frame connection than a standard derailleur hanger by gripping both sides of the UDH frame interface. Beyond the mounting system, the Eagle 90 derailleur is described by SRAM as the most rebuildable Eagle Transmission derailleur yet built - featuring replaceable outer and inner parallelogram links, skid plates, bushings, cage, and cage assembly, all with a tool-free threaded cage assembly design.

This repairability focus means that derailleur components damaged in crashes or worn through extended use can be replaced individually rather than requiring full derailleur replacement - a meaningful cost and waste reduction advantage for riders who push the limits of their equipment on technical terrain.

Eagle 90 Mechanical Shifter, DUB Crankset, and XS-1275 Cassette

The Eagle 90 T-Type Actuation mechanical shifter is built with modern shift ergonomics and a premium textured aluminium lever touchpoint, using a double-click shift mechanism designed to deliver the crisp, precise gear changes under load that are a signature characteristic of Eagle Transmission. T-Type Actuation is the mechanical cable pull geometry developed specifically to work with the T-Type derailleur's shift mechanism, ensuring compatibility between the shifter and derailleur is optimised rather than adapted from a standard actuation ratio.

The forged aluminium Eagle 90 DUB crankset carries a T-Type chainring with SRAM's signature silver finish and removable bash guards for protection on technical terrain. The GX Eagle XS-1275 T-Type cassette provides a 10-52 tooth range with full X-SYNC technology - the same shifting ramp and chain retention technology used across SRAM's Eagle cassette range - enabling reliable inboard and outboard shifting under load. The GX Eagle Transmission Flattop chain completes the drivetrain.

Four-Step Setup - No Limit Screws, No B-Tension, No Guesswork

The Eagle Transmission setup procedure covers the Eagle 90 system with a revolutionary four-step installation process - Prepare, Hang, Tighten, Route. The absence of limit screws and b-tension adjustment removes the two most common sources of mechanical derailleur setup error and frustration, making installation and adjustment straightforward for home mechanics and professional shops alike. SRAM describes the process as containing no guesswork - the system is designed to be set up correctly by following the four steps without requiring iterative fine-tuning.

FAQs

Does the Eagle 90 groupset require a specific frame interface?

Yes. The Eagle 90 Full Mount derailleur requires a frame with a UDH (Universal Derailleur Hanger) interface. The Hangerless Full Mount system grips both sides of the UDH frame interface and is not compatible with standard derailleur hangers. Confirm your frame uses UDH before purchase.

What makes the Eagle 90 the most rebuildable Eagle Transmission derailleur?

The Eagle 90 features replaceable outer and inner parallelogram links, skid plates, bushings, cage, and cage assembly with a tool-free threaded cage assembly system. Individual damaged or worn components can be replaced without replacing the entire derailleur, reducing cost and waste for riders who encounter crash damage or high-wear use.

What is the T-Type Actuation shifter and how does it differ from a standard SRAM shifter?

The Eagle 90 T-Type Actuation shifter uses a cable pull ratio specifically developed to work with the T-Type derailleur's shift mechanism, ensuring optimised compatibility between shifter and derailleur. It uses a double-click shift mechanism and premium textured aluminium lever touchpoint designed for the crisp, under-load shifting that is the signature characteristic of Eagle Transmission.

What cassette range does the Eagle 90 groupset use?

The groupset includes the GX Eagle XS-1275 T-Type cassette with a 10-52 tooth range and full X-SYNC technology for inboard and outboard shifting performance under load - the full wide-range capability of the Eagle platform in a T-Type compatible cassette.

How complex is the Eagle 90 setup process?

SRAM describes a four-step setup process - Prepare, Hang, Tighten, Route - with no limit screws, no b-tension adjustment, and no guesswork. This simplified procedure removes the most common sources of mechanical derailleur setup error, making installation straightforward for both home mechanics and professional workshops.