evo.com | SRAM Rear Derailleurs > The SRAM S500 Eagle AXS 12-Speed Rear Derailleur is the heart of the drivetrain, and once you feel it shift, you'll wonder how you rode without it. Its wireless system delivers shifts so smooth it's like going from chunky peanut butter to the creamy stuff, no clunks, no hesitation, just seamless gear changes every single time. Complete control, confident shifts, on any bike you put it on. Robust Aluminum Cage Compatibility Across SRAM MTB or Road AXS Components Utilizes Type 3 Cage Damper for Confident Chain Retention and Quiet Descending Eagle Drivetrain Ecosystem Compatible AXS Enabled for Easy Wireless Setup, Personalization and Reliability | SRAM S500 Eagle AXS 12-Speed Rear Derailleur 2026 in Black | Aluminum