SRAM Rival AXS XPLR E1 Rear Derailleur

The SRAM Rival AXS XPLR E1 Rear Derailleur strips away the hanger, the B-screw, and every cable from the equation — leaving you with a cleaner, more durable setup built around gravel's demands. The hangerless Full Mount interface integrates directly with compatible frames, removing a common failure point and eliminating the alignment guesswork that comes with traditional hanger-based systems.

This is a 1x-specific derailleur designed for SRAM's 13-speed XPLR drivetrain, pairing with a 10-46T cassette and Flattop chain for a gear range wide enough to handle loaded climbs and open road alike. Wireless AXS shifting means actuation is electronic and instant, with no cable friction to compensate for. A spring clutch mechanism — the kind more commonly found on trail-ready mountain bike drivetrains — keeps chain tension consistent when the surface gets rough, reducing chain slap and drops on mixed terrain. The derailleur is also built to be serviced rather than swapped, with rebuildable construction and replaceable parts that extend its working life.

SRAM Rival AXS XPLR E1 Specs at a Glance

• Wireless AXS electronic shifting — no cables or housing
• Full Mount hangerless interface — no B-screw adjustment
• 1x-specific, 13-speed XPLR drivetrain compatibility
• Designed for 10-46T XPLR cassette with Flattop chain
• Spring clutch for chain management on rough and mixed-surface terrain