The SRAM Force AXS E1 Rear Derailleur is lighter, faster, and more versatile than ever, handling both 1x and 2x drivetrains with cassette compatibility from 10-28T to 10-36T. A redesigned, lighter cage and larger X-SYNC pulley wheels improve drivetrain efficiency while maintaining smooth, secure chain management. AXS wireless integration enables easy setup and customization, and the derailleur sheds 12 grams compared to the previous generation. Built to handle steep climbs, fast descents, and everything in between, it delivers quiet, reliable shifting across a wide gear range.