SID Ultimate Race Day 3-Position Remote 29in Boost Fork
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Only 3 In stock
Warning: California Proposition 65
Light, fast, and composed—the SID Ultimate 3P Fork charges hard with XC control
What Our Gearhead® Experts Are Saying:
"I’ve been running the SID Ultimate 3P on my XC rig, and it’s a total game-changer. The new 3-position damper makes it easy to fine-tune on the fly, and the DebonAir+ spring eats up chatter without sacrificing sprint efficiency. It’s lightweight, but stiff and precise when the trail turns techy."
We ride the RockShox SID Ultimate 3P Fork when we want our race-day rig to handle more than just the start line. Whether we’re hitting smooth singletrack or techy climbs deep in the woods, this fork stays light, planted, and responsive under pressure. With a new 35mm chassis, it’s stiffer and more composed than ever while maintaining XC-ready weight and efficiency.
The updated Charger Race Day 2 damper offers three-position compression control—Open, Pedal, and Lock—right at your fingertips for fast adjustments between sprint efforts and rocky descents. The DebonAir+ spring enhances small bump compliance while offering tunable mid-stroke support that’s ideal for backcountry loops and stage races alike. From modern XC to downcountry and beyond, the SID Ultimate 3P is ready to lead the charge.
Details
- Lightweight suspension fork for cross-country and trail riding
- New 35mm chassis adds stiffness and control without excess weight
- Charger Race Day 2 damper with 3-position remote compression tuning
- DebonAir+ spring enhances small-bump sensitivity and mid-stroke support
- Includes Maxle Stealth, bolt-on fender, and star nut for clean setup
- Boost axle spacing improves front-end stiffness and tracking
- Flatter axle-to-crown for confident handling in technical terrain
- Item #RSXB07J
- Travel
- 120mm
- Stanchion Material
- aluminum
- Lower Material
- magnesium
- Crown Material
- aluminum
- Wheel Size
- 29in
- Steer Tube Diameter
- 1.5in tapered
- Stanchion Diameter
- 35mm
- Axle To Crown
- [120mm, 29in] 531mm
- Rake
- 44mm
- Spring Type
- air, DebonAir+
- Damper
- Charger Race Day 2
- Adjustability
- 3-position remote compression, rebound
- Lockout
- lockout
- Axle
- 15 x 110mm boost
- Brake Compatibility
- disc, Post Mount
- Rotor Compatibility
- [min] 180mm, [max] 220mm
- Claimed Weight
- 3lb 4.2oz (1480g)
- Activity
- cross-country
- Manufacturer Part Number
- 00.4020.957.005
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RockShox SID Ultimate XC fork29 inch mountain bike forksLightweight cross-country bike suspension35mm stanchion aluminum forkThree-position remote compression adjusterDebonAir+ spring for superior performanceDurable magnesium lower materialRace Day 2 damper for optimal control120mm travel for rugged terrainCross-country biking for all agesEfficient lockout feature for climbingBoost axle spacing for enhanced stabilityLearn more about SID Ultimate Race Day 3-Position Remote 29in Boost Fork