What Our Gearhead(R) Experts Are Saying: "I upgraded my SID SL with this kit and it completely changed how my bike rides. No more toggling between lockout and open-it just does it for me. The Flight Attendant system is intuitive and perfectly timed, and installation was surprisingly simple with everything included." Why settle for guessing when your suspension can think for you? The Charger Race Day 2 Flight Attendant Upgrade Kit lets us bring SRAM's smartest damper technology to existing SID and SID SL forks, transforming any hardtail or full-suspension XC bike into a fully connected, performance-optimized machine. With the latest firmware and Flight Attendant-only tuning, this kit seamlessly adapts your front end to terrain and rider input in real-time. The upgrade includes a full Flight Attendant-compatible Charger Race Day 2 damper, control module, SRAM battery, and charger-everything needed to convert your fork (2021+ SID or SID SL, depending on SKU) into an automated suspension system. With three compression positions (Open, Pedal, Lock), electronically controlled and user-customizable, this kit offers unmatched efficiency and control. For best results, pair with an AXS power meter or pedal sensor to unlock the system's full potential.