Climb mountains. Charge descents. The RockShox SID Ultimate isn’t like other XC forks. It is lighter than ever with a formidable 35mm chassis that holds the line when you’re on the edge. The Race Day 2 damper provides efficient Pedal positions all at your fingertips. SID Ultimate adapts to everything from full-gas cross-country to sporty backcountry loops thanks to a new higher-volume DebonAir+ spring that’s supple at the top of its travel with tons of tunability.

Steerer Type	Tapered
Color	Gloss Black
Lockout Switch	Handlebar - Cable
Brake Type	Post Mount 180
Crown Race	40
Negative Spring	Air
Travel (mm)	120
Wheel Size	29"
Offset	44
External Adjustments	Rebound Damping
Defined Color	Black
Positive Spring	Air
Axle to Crown Length	531
Front Axle	15mm Thru x 110mm
Stanchion Diameter	35
Maximum Tire Width	66
S.H.I.S. Stem Clamp Diameter	28.6
Steerer Tube Length (mm)	230