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Rear derailleurs
SRAM Apex XPLR Rear Derailleur
Mechanical 1x12 XPLR · Max 44T
Compatibility: reviewed
Known specifications can be used by the compatibility engine.
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Technical data
Specifications
- Speeds
- 12-speed
- Supported speeds
- 12-speed
- Maximum cassette cog
- 44T
- Supported cassette combinations
- 11-44t
- Supported front chainrings
- 1
- Drivetrain family
- SRAM Apex Mechanical D1 XPLR 1x12
- Compatible chain families
- SRAM Road Flattop D1 12-speed
- Shift actuation
- Mechanical
- Frame mounting
- Conventional hanger
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
- Sep 2, 2026
- Compatibility review
- Reviewed Sep 2, 2026
Approved technical sources
- RD-APX-1-D1 official exact package and specifications
- sram.com/en/sram/models/rd-apx-1-d1ManufacturerSource checked Jul 31, 2026Evidence reviewed Sep 2, 2026
- SRAM road component compatibility map
- sram.com/globalassets/document-hierarchy/compatibility-map/road/road-compatibility-map-2023.pdfManufacturerSource checked Jul 28, 2026Evidence reviewed Aug 13, 2026