SRAM Eagle 90 T-Type 12-Speed Long Cage 52t Max Full Mount Black/Silver Rear Derailleur

The SRAM Eagle 90 T-Type is a cable-actuated Eagle Transmission rear derailleur that bolts directly to UDH frames with SRAM's Full Mount, hangerless interface. It uses a T-Type-specific cable actuation ratio and works with 12-speed T-Type cassettes up to 52t.

SRAM calls it the most rebuildable derailleur in the Eagle ecosystem: skid plates, both parallelogram links and the cage assembly are replaceable, and the cage threads on without tools. Setup has no limit screws and no B-tension adjustment.

Who It's For

• Mountain riders with a UDH frame who want Transmission-level hardware with mechanical shifting.
• Riders who prefer cables to batteries but want T-Type durability.
• Consider a different derailleur if your frame does not have a UDH interface, or if you run a non-T-Type chain or cassette.

What to Look For

• Frame: Requires a frame with a UDH interface. It replaces the hanger and will not fit a conventional dropout.
• Chain and cassette: T-Type chain only (sold separately), with a 12-speed T-Type cassette up to 52t.
• Shifter: Needs a T-Type mechanical shifter; the cable ratio is specific to Transmission.

Key Features

Full Mount, hangerless interface. The derailleur clamps both sides of the frame at the UDH and locates off the axle, which SRAM says gives a much stronger connection than a hanger.

No limit screws or B-tension. Positioning comes from the mount itself, so setup is cable tension and indexing only.

Replaceable parts. Skid plates, outer and inner parallelogram links, the cage and the full cage assembly are all sold separately for repair.

Aluminum long cage. 42t chain wrap capacity for a 52t cassette. Listed weight is 395 g.

Rider Intent Summary

• Biggest strengths: Hangerless strength and simple setup with a cable; highly rebuildable.
• Tradeoffs: UDH frame and T-Type chain and cassette required.
• What makes it different: Eagle Transmission's mounting and serviceability without electronics.

Victory's Take

We point riders to the Eagle 90 when they want Transmission on a UDH frame but would rather keep a cable. Victory Bicycle Studio can confirm UDH fit and set the system up.

Specifications

• Brand: SRAM
• Model: Eagle 90 T-Type
• Drivetrain speeds: 12
• Largest cog: 52t
• Chain wrap capacity: 42t
• Cage length: Long
• Cage material: Aluminum
• Mount: Full Mount, hangerless (UDH frame required)
• Actuation: Mechanical, T-Type cable ratio
• Chain: T-Type (sold separately)
• Color: Black/Silver
• Weight: 395 g
• Part number: 00.7518.188.000