Elite XC Racing Suspension
The RockShox SID SL Ultimate Brain Boost fork – Black is engineered for riders who demand the highest level of speed, efficiency, and responsiveness in cross-country racing. This ultra-light, competition-ready fork integrates premium damping with smart performance features, making the RockShox SID SL Ultimate Brain Boost fork – Black the perfect upgrade for serious racers and elite XC riders.
Ultra-Lightweight Fork for Maximum XC Speed
Designed for explosive acceleration and fast-paced XC riding, the RockShox SID SL Ultimate Brain Boost fork – Black features an incredibly light chassis that improves handling and reduces fatigue. Its stiff and responsive design ensures that every pedal stroke translates into forward momentum, giving you a definitive edge on climbs, sprints, and technical race sections.
Smart Brain Boost Technology for Real-Time Performance
The RockShox SID SL Ultimate Brain Boost fork – Black enhances efficiency with intelligent damping that reacts instantly to terrain changes. This advanced system increases pedaling support on smoother surfaces and activates plush suspension on rough sections—without needing manual adjustments. It’s the perfect blend of speed, smoothness, and energy-saving control.
Smooth Handling With Premium Damping & Boost Precision
With Boost compatibility, the RockShox SID SL Ultimate Brain Boost fork – Black offers enhanced wheel stiffness and improved steering accuracy. Premium damping technology ensures smooth compression and rebound management, giving riders excellent traction and confidence on technical XC tracks. Its sleek black finish adds a modern, professional look to any race bike.
| Specification | Detail |
|---|---|
| Wheel Size | 29″ |
| Travel Options | 100 mm (standard), 110 mm (depending on build) |
| Stanchion / Upper Tube | 32 mm straight-wall aluminum upper tubes |
| Damper Type | “Brain” (position-sensitive inertia valve) – auto-adjusting lockout/response depending on terrain |
| Offset (Rake) | 44 mm (for 29″ version) |
| Axle / Hub Spacing | 15×110 mm BOOST thru-axle |
| Steerer Tube | 1.5″ tapered steerer |
| Spring | DebonAir air spring (adjustable air pressure for rider weight/terrain) |
| Tire Clearance / Max Tire Width | Compatible with up to 29″ wheels; typical clearance suitable for XC tires — up to ~2.4-2.6″ depending on tire/rim setup |
| Brake Rotor Compatibility | Post-mount disc; supports common XC rotor sizes (minimum ~160 mm, typical up to 200 mm) |
| Weight (approx.) | ~1,326 g (for 100 mm travel, stock configuration) |
| Use / Intended Discipline | Cross-Country (XC) / Race / Light Trail — optimized for efficient pedaling, lightweight handling, quick responsiveness |
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