SRAM Rival eTap AXS Rear Derailleur BSS-000864 due to its compact design

due to its compact design

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0 or Vario system bags

with an air pressure compensation valve for air travel

including most Shimano® models with outboard bearings

SRAM Rival eTap AXS Rear Derailleur BSS-000864 due to its compact designAbout SRAM Rival eTap AXS Rear Derailleur On any surface you can imagine, in any drivetrain configuration, the Rival eTap AXS rear derailleur will handle it. Secure chain management and fast, precise shifting make for a smooth and quiet ride, every time. Battery Not Included Features Wireless electronic eTap shift logic for intuitive shifting, easy setup and reliability Compatible with both 1x and 2x drivetrains 36T cog max derailleur works with 10