SID Ultimate Flight Attendant Fork

The RockShox SID Ultimate Flight Attendant is no ordinary cross-country fork: it features a 35 mm chassis—the perfect balance of lightweight and stiffness for modern XC—that holds its line when you're at the limit, whether climbing mountains or attacking fast descents. With the Flight Attendant system, this fork is more efficient and advanced than ever: a completely new algorithm uses a series of sensors to read rider and terrain inputs and anticipate the ideal suspension position, with a level of customization unmatched by any other system. It is wireless, cable-free, an integral part of the SRAM AXS ecosystem, and IPX7 water-resistant. The new electronic Charger Race Day 2 Flight Attendant damper offers automatic three-position compression adjustment (Open / Pedal / Lock) with independently adjustable rebound, and includes a fork-only upgrade mode for hardtail frames and a customizable Auto Mode to disable "Pedal" or "Lock" positions. The higher-volume DebonAir+ air spring is sensitive to small bumps at the beginning of the travel and offers adjustable mid-stroke support, while Adaptive Ride Dynamics allows the system to learn from the rider to make increasingly smarter and faster decisions. Its machined crown shaves weight without sacrificing strength or stiffness. Includes RockShox short fender, star nut, Maxle Stealth axle, AXS battery, and USB-C charger.

FEATURES

• Flight Attendant system with new algorithm and suite of sensors that anticipates the ideal suspension position
• Electronic Charger Race Day 2 Flight Attendant damper: 3-position automatic compression (Open / Pedal / Lock) with independently adjustable rebound
• Adaptive Ride Dynamics: the system learns from the rider for more personalized, efficient, and faster decisions
• 35 mm chassis: ideal blend of lightness and stiffness for modern XC, now even lighter
• Higher-volume DebonAir+ air spring: increased small-bump sensitivity and adjustable mid-stroke support
• 120 mm long-travel option for more demanding terrain
• Machined crown to trim weight without compromising strength or stiffness
• AXS-enabled and cable-free; battery shared with all SRAM AXS components
• IPX7 water-resistant Flight Attendant system
• Fork-only upgrade for hardtails and customizable Auto Mode
• Short fender compatibility (RockShox fender included); Maxima Plush Dynamic lubricant

COMPATIBILITY

Cross-country / down-country fork with 120 mm of travel, for 29″ wheels, Boost 15×110 front axle (Maxle Stealth), and tapered steerer tube. The Flight Attendant system requires an SRAM AXS battery and app and operates within the AXS ecosystem, improving as you add more AXS components. Before purchasing, confirm disc brake, 15×110 Boost spacing, and tapered headtube on your frame. To ensure it is the exact version, verify SKU 00.4021.283.002 (model FS-SID-UFA-D2).

SPECIFICATIONS