RockShox, SIDLuxe Ultimate Flight Attendant A3, Rear shock, 190x45, Shaft Eyelet: Standard, Body Eyelet: No Bushing, 0 Token, Reb29/comp25, MidMD, Lockout8, Specialized Epic 2024+
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SIDLuxe Ultimate Flight Attendant completes the fastest, most efficient, and most technologically-advanced crosscountry platform ever. Flight Attendant’s fine-tuned algorithm intuitively understands everything on course. Focused on maximizing efficiency and maintaining speed, the new SIDLuxe Ultimate Flight Attendant is a shock built to dominate the track.
- Adaptive Ride Dynamics enables the Flight Attendant system to learn from the rider to make smarter, more personalized decisions for greater efficiency and even more speed.
- Three-position damping system: Open, Pedal, and Lock positions. High speed compression damping blow-off for Open and Pedal positions.
- Super-light XC design delivers premium performance and efficiency.
- SRAM Model ID: RS-SIDL-UFA-A3
RockShox SIDLuxe Ultimate Flight Attendant A3 Rear Shock
The RockShox SIDLuxe Ultimate Flight Attendant A3 Rear Shock delivers fully automated suspension performance for modern cross-country and downcountry mountain bikes. Built around the intelligent RockShox Flight Attendant electronic suspension system, this rear shock automatically adjusts compression damping in real time to maximize efficiency, traction, and speed on constantly changing terrain.
Using SRAM’s Adaptive Ride Dynamics algorithm, the system analyzes rider power input and terrain conditions to determine the optimal suspension setting. The shock instantly switches between Open, Pedal, and Lock compression modes, allowing riders to maintain momentum without manually adjusting suspension during climbs, descents, or sprint sections.
The SIDLuxe Ultimate chassis is designed specifically for high-performance XC racing. A lightweight Solo Air spring provides excellent small-bump sensitivity and efficient pedaling characteristics, while the damper offers external rebound adjustment and electronically controlled compression.
Integrated with the SRAM AXS wireless ecosystem, the Flight Attendant module shares the same battery used by other AXS components, creating a clean, cable-free cockpit while enabling seamless communication between suspension components and sensors.
For riders building the fastest modern XC setups, the SIDLuxe Ultimate Flight Attendant provides a powerful combination of lightweight design, automatic suspension control, and wireless integration.
Key Features
Flight Attendant automatic suspension control
Three compression modes: Open / Pedal / Lock
Adaptive Ride Dynamics algorithm learns rider behavior
Damper with external rebound adjustment
Solo Air spring optimized for cross-country performance
Fully integrated AXS wireless ecosystem
Shared AXS battery platform
IPX7 waterproof Flight Attendant electronics
Lightweight XC race design (~349 g depending on size)
Ideal For
Cross-country race bikes
Downcountry builds
Riders upgrading to Flight Attendant electronic suspension systems
High-efficiency XC and marathon race setups
Compatibility Notes
Full automatic Flight Attendant operation typically requires:
Flight Attendant fork
Flight Attendant rear shock
Flight Attendant pedal sensor or compatible power meter
These components communicate within the AXS ecosystem to automatically adjust suspension behavior based on rider effort and terrain changes.