The Flight Attendant Charger 3.2 Damper Upgrade kit converts specific non-Flight Attendant suspension forks into a Flight Attendant-capable unit. Includes necessary parts to convert RockShox ZEB B1 Suspension Fork (2027+) into a Flight Attendant-capable unitIMPORTANT - Requires power meter or pedal sensor for Flight Attendant functionality (Sold separately)Kit Includes: Damper, Module, Battery, USB-C Charger W/O CordCompatible with RockShox Suspension Fork Models: FS-ZEB-SEL-B1, FS-ZEB-UFA-B1, FS-ZEB-ULT-B1 RockShox Flight Attendant Charger Damper Upgrade Kit Damper, Compression UPC: 710845930362 MPN: 00.4318.118.001