ROCKSHOX

ROCKSHOX SID ULTIMATE RACE DAY2 3P FLIGHT ATTENDANT USB-C D2 29" Fork, 15x110mm Boost Axle, Black

Manufacturer reference: 00.4021.283.000
Climb mountains, fly down descents: the ROCKSHOX SID Ultimate Flight Attendant fork is designed to push the limits of cross-country riding. Its stiff 35... Read more

Recommended price* : 1.599,00 €

Regular price 1.399,90 €
Regular price Sale price 1.399,90 €
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Description

Climb mountains, fly down descents: the ROCKSHOX SID Ultimate Flight Attendant fork is designed to push the limits of cross-country riding. Its stiff 35 mm chassis provides unwavering stability even at high speeds, while its 120 mm of travel gives you the room you need to tackle technical terrain.

Equipped with the electronic Flight Attendant system, this smart fork anticipates your needs using sensors that analyse the terrain and your effort. The Charger Race Day 2 damper automatically adjusts compression between three modes (Open, Pedal, Lock), delivering pedalling efficiency and comfort without compromise.

Flight Attendant features a tool that lets the algorithm learn how you ride and continually tailor your suspension: Adaptive Ride Dynamics. The algorithm gathers fresh data to accurately calculate your personalised effort zones throughout the season. Bias Adjust technology lets you fine-tune how Flight Attendant responds to your riding style in automatic mode.

The SID Ultimate also stands out for its DebonAir+ air spring, optimised for small-bump sensitivity and consistent mid-stroke support. Maxima Plush oil reduces friction for lasting performance, even on the most demanding rides.

Finally, its compatibility with the SRAM AXS ecosystem and lightweight design make this fork a showcase of technology and performance. Get ready to reach new heights.

Ref: 16131854696828

Key features

Automatic suspension: Flight Attendant selects the Open / Pedal / Lock position in real time.

Intelligent learning: Adaptive Ride Dynamics tailors its decisions to how you ride.

SID 35 mm chassis: Stiffness and precision, with a lightweight machined crown.

Sensitivity and support: High-volume DebonAir+ air spring.

AXS ecosystem: Wireless, shared AXS battery, IPX7 waterproof rating.

Technical information

Discipline: XC racing
Crown: Single
Wheel size: 29"
Front wheel axle: 15x110 mm (Boost)
Lockout: At the fork
Colour: Black
Travel: 120 mm
Adjustable travel: No
Offset: 44 mm
Maximum brake disc diameter: 220 mm
Minimum brake disc diameter: 180 mm
Steerer diameter: Tapered 1.5"–1"1/8
Stanchion diameter: 35 mm
Brake mount: Post Mount
Fork height: 531 mm
Steerer length: 265 mm (can be cut down)
Steerer material: Aluminium
Stanchions: Aluminium with black Fast Black finish
Machined aluminium crown
Lowers: Magnesium
Adjustable air volume: Yes
Tokens installed/maximum: 0/3

DebonAir+ air spring
Race Day 2 3P Flight Attendant damping (open/pedal/lock)
Bottomless Tokens air volume adjustment
Maxle Stealth axle
Maxima Plush oil

Automatic compression adjustment: Open/Pedal/Firm
Rebound adjustment: Yes, E-Cont
Preload adjustment: Yes
Spring: Air (maximum pressure 150 psi)

Tyre compatibility: Up to 2.3" width on 29" wheels without a mudguard
Not compatible with electric mountain bikes
Compatible with a short mudguard (RockShox mudguard included).

Maximum recommended weight (bike + rider): 150 kg

Compatible only with the Flight Attendant ecosystem: fork, rear shock, AXS drivetrain and crankset power meter.
USB-C connection (cable not included)

Weight (manufacturer): 1,624 g at 120 mm travel
Model FS-SID-UFA-D2.

Price information

*Recommended retail price from supplier in September 2026