The SRAM Apex XPLR rear derailleur is built for gravel riding — a mechanical 12-speed derailleur with the wide-range capacity and long-cage geometry needed for XPLR gearing. Designed for gravel, bikepacking, and adventure riding where reliability and simplicity are priorities alongside gear range.

Highlights

  • Apex XPLR 12-speed gravel rear derailleur
  • Wide-range cage for gravel and bikepacking cassette ratios
  • Compatible with Apex XPLR shifters
  • Mechanical shifting — no battery required
  • Reliable, lower-maintenance option for adventure riding

Fit and compatibility

12-speed gravel rear derailleur for Apex XPLR drivetrains. Compatible with Apex XPLR shifters and XPLR cassettes. Confirm maximum cog capacity and cassette compatibility before ordering.

Installation. Service. Compatibility. Find all the documentation needed to set up, use, and maintain your components in the SRAM Service hub.

Visit product service page
Features
  • Compatible with cassettes with 
44T large cogs
  • Use with Flattop chain
  • Works with 12-speed mechanical 
Apex and Eagle shifters
  • Clutch controls chain tension for consistent shifting
  • X-HORIZON straight parallelogram design limits all movement to the horizontal axis, which makes ghost shifting impossible while also reducing shift force
  • Cage Lock technology makes for fast wheel changes or chain installation

Specifications

Cage (RD) n/a
Cable pull ratio X-actuation
Speed (RD) 12s
Color (RD) Black
Cage material (RD) Aluminum
Pulley bearings material Steel
Max tooth 44
SKU SRM-RD-APX-1-D1
Model # RD-APX-1-D1
Barcode # RD-APX-1-D1
Brand SRAM