RockShox SID Ultimate Race Day 3P Fork
Product Details
The RockShox SID Ultimate Race Day 3P Fork is engineered for modern cross-country racing, delivering an elite balance of low weight, stiffness, and precision handling. Built around a lightweight 35mm chassis, it reduces overall weight without compromising the rigidity needed for aggressive descents, technical climbs, and fast, high-output racing. The result is a fork that feels fast, responsive, and composed when every second matters.
At the core of the SID Ultimate is the Charger Race Day 2 damper with three-position compression adjustment: Open, Pedal, and Lock. This gives riders immediate control over suspension performance across changing terrain. The DebonAir+ spring enhances small-bump sensitivity while improving mid-stroke support for better control under load. Combined with refined bushing architecture and lightweight magnesium lowers, the SID Ultimate delivers a smooth, efficient, and race-tuned suspension feel designed for podium-level performance.
Key Features
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Charger Race Day 2 Damper - Three-position Open, Pedal, and Lock compression settings for fast on-the-fly adjustment.
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DebonAir+ Spring - Improved small-bump compliance with enhanced mid-stroke support for greater control on technical terrain.
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35mm Lightweight XC Chassis - Optimized stiffness-to-weight ratio with magnesium lowers for maximum race efficiency.
Fork Specifications
| Specification | Details |
|---|---|
| Wheel size | 29" |
| Travel (mm) | 110mm, 120mm |
| Damper Type | Charger Race Day 2 |
| Fork offset | 44mm (29") |
| Color (FS) | Electric Red - Gloss, Gloss Black, SID Blue Crush - Gloss |
| E-Bike Approved | Not Approved |
| Steerer | 1.5" Tapered |
| Axle | 15x110mm BOOST™ |
| Upper tube type | 35mm tapered wall aluminum |
| Damper adjust | 3 position remote (Cable Pull 7mm + 7mm– sold separately), Crown |
| Volume reducer | 0/3 Tokens, 1/3 Tokens |
| Spring | DebonAir, DebonAir+ |
| Max Tire Width (mm) | 66 |
| Maximum Rotor Size | 220mm |
| Minimum Rotor Size | 180mm |
| Fender Compatibility | Bolt On - Short (Use AC-FEN-SID-A2) |
| Weight (g) | 1480 |
| Weight Based On | 120mm travel, Crown Adjust W/Maxle Stealth |