Competitive CyclistNew · Checked Sep 20, 2026, 5:22 AM
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Rear derailleurs
SRAM SRAM Eagle 90 Transmission Rear Derailleur
Mechanical 1x12 · Full Mount UDH · 10-52T
Compatibility: reviewed
Known specifications can be used by the compatibility engine.
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Evidence and freshness
Technical-source dates and retailer offer checks are separate. A retailer check does not validate compatibility.
Report a correction- Technical review
- Aug 13, 2026
- Compatibility review
- Reviewed Aug 13, 2026
Approved technical sources
- SRAM Eagle 90 Transmission derailleurManufacturerSource checked Jul 31, 2026Evidence reviewed Aug 13, 2026
- SRAM Eagle Transmission frame-fit specificationsManufacturerSource checked Jul 30, 2026Evidence reviewed Aug 13, 2026
Technical data
Specifications
- Speeds
- 12-speed
- Supported speeds
- 12-speed
- Maximum cassette cog
- 52T
- Smallest cassette cog
- 10T
- Supported cassette combinations
- 10-52t
- Supported front chainrings
- 1
- Maximum front difference
- 0T
- Drivetrain family
- SRAM Eagle T-Type 12-speed
- Compatible chain families
- SRAM T-Type 12-speed
- Shift actuation
- Mechanical
- Frame mounting
- Full Mount (UDH)
- Total capacity
- 42T