microSHIFT Advent 9-Speed Rear Derailleur

Direct replacement rear derailleur for Surface 604 e-bikes running the microSHIFT Advent 9-speed drivetrain. The Advent rear derailleur delivers smooth, responsive shifting across the full 11-46T cassette range through its direct path cable routing system. The non-clutch design reduces shifting effort at the lever, making it ideal for commuter and daily riding. Built with a steel cage and aluminum outer link for durability that holds up to real-world riding. The modular design makes adjustment and repair straightforward — no shop visit required for basic maintenance. Compatible with: Rook, V Rook, Colt, Werk, and other Surface 604 models equipped with the microSHIFT Advent 9-speed drivetrain. Compatible with Advent shifters only — not Shimano or SRAM.