Jenson USANew · Checked Nov 4, 2026, 3:23 AM
$25.60In stockVisit store
Rear derailleurs
SRAM X4 Rear Derailleur
8-speed · Long cage · Black
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.
AmazonExact Match Verified
Technical data
Specifications
- Speeds
- 8-speed
- Supported speeds
- 8-speed
- Maximum cassette cog
- 34T
- Supported front chainrings
- 1, 2, 3
- Drivetrain family
- SRAM X4 Mechanical 8-speed
- Compatible chain families
- SRAM 8 Speed Powerchain
- 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
- Aug 13, 2026
- Compatibility review
- Reviewed Aug 13, 2026
Approved technical sources
- SRAM MTB component compatibility map
- sram.com/globalassets/document-hierarchy/compatibility-map/mtb/2021-mtb-components-compatibility-map.pdfManufacturerSource checked Jul 29, 2026Evidence reviewed Aug 13, 2026
- SRAM RD-X4-A1 product page
- sram.com/en/sram/models/rd-x4-a1ManufacturerSource checked Jul 31, 2026Evidence reviewed Aug 13, 2026