BikeTiresDirectNew · Checked Nov 4, 2026, 6:17 AM
$210.00In stockVisit store
Rear derailleurs
SRAM Eagle 90 Transmission Rear Derailleur
Mechanical 1x12 · Full Mount UDH · 10-52T
Compatibility: reviewed
Known specifications can be used by the compatibility engine.
Retailer offers
Where to Buy
Compare verified retailer affiliate links or search Amazon. We may earn a commission from qualifying purchases. Please confirm the exact variant before purchasing.
BackcountryNew · Checked Nov 4, 2026, 5:33 AM
$210.00In stockVisit storeCompetitive CyclistNew · Checked Nov 4, 2026, 4:31 AM
$210.00In stockVisit storeJenson USANew · Checked Nov 4, 2026, 3:23 AM
$210.00In stockVisit storeAmazonExact Match Verified
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
Catalog trust
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 derailleur
- sram.com/en/sram/models/rd-90-a1ManufacturerSource checked Jul 31, 2026Evidence reviewed Aug 13, 2026
- SRAM Eagle Transmission frame-fit specifications
- sram.com/globalassets/document-hierarchy/frame-fit-specifications/mtb/eagle-transmission-and-dh-transmission-frame-fit-specifications.pdfManufacturerSource checked Jul 30, 2026Evidence reviewed Aug 13, 2026