2023 RockShox SID Ultimate 3P Crown Adjust Fork

Strong, light, and ready for anything. The RockShox SID Ultimate 3P is built for cross-country riders who demand performance, precision, and durability. Its 35 mm chassis and longer upper tubes increase bushing overlap, reducing side loads and friction while boosting long-term reliability. With the new Race Day 2 3P damper and DebonAir spring, SID adapts seamlessly to climbs, descents, and everything in between.

Features

35 mm XC chassis: Lightweight yet rigid, optimized for modern XC bikes

Race Day 2 3P damper: Three-position compression (Open, Pedal, Lock) for on-the-fly tuning

DebonAir spring: High-volume, tunable air spring for small-bump sensitivity and mid-stroke support

Optimized bushings: Maximum overlap for smooth, solid performance on rough terrain

Maxima Plush Dynamic Suspension Lube: Reduces friction and enhances durability

Machined crown: Shaves weight while maintaining strength and stiffness

Bolt-in torque cap adapters: Compatible with standard hub end-caps

Signature colourways: Blue Crush or Ultimate High Gloss Black with Pearl White graphics

Specifications

Damper: Charger Race Day 2

Damper Adjust: 3-position Crown Adjust (Open, Pedal, Lock)

Spring: DebonAir

Wheel Size: 29"

Travel: 120 mm

Fork Offset: 44 mm

Weight: 1,476 g (110 mm travel, 44 mm offset)

Why You’ll Love It

The SID Ultimate 3P is more than a cross-country fork—it’s a precision tool for riders who demand performance and efficiency. Lightweight, stiff, and fully tunable, it excels on XC race courses, sportive loops, and backcountry adventures, giving you confidence and control on every ride.