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SKU: FK4248

RockShox SID Ultimate 2020+ Suspension Fork - 29"/27.5+ DebonAir Air Spring, 110-120mm Travel, 51mm Offset, Boost 15x110mm, Tapered Carbon Steerer, Lightweight High-Performance MTB XC Cross-Country Fork

Regular price $277.71
$337.00 Sale price $277.71 Regular price
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Description

Upgrade your mountain biking experience with the RockShox CSU SID Ultimate 110-120 mm DebonAir (2020+) fork, engineered for precision, durability, and performance on demanding trails. Designed for 29" and 27.5+ wheel sizes, this high-performance suspension component is ideal for cross-country racers and trail riders seeking lightweight agility combined with advanced suspension technology.

Materials & Build Quality:

Constructed with lightweight yet robust materials, the CSU SID Ultimate features a 32mm crown, steerer tube, and upper tube assemblies crafted from premium aluminum alloy. The tapered steerer tube design ensures enhanced steering precision and stiffness, delivering confident handling across varied terrains. The 51mm offset provides optimal trail feel and maneuverability, making it suitable for aggressive riding styles.

Performance & Engineering:

Harnessing the innovative DebonAir spring system, the CSU SID Ultimate offers a plush, responsive feel that absorbs impacts smoothly while maintaining excellent small bump sensitivity. The air spring technology allows for customizable suspension firmness, enabling riders to fine-tune the fork for specific riding conditions and body weight, resulting in superior control and efficiency.

Components & Technology:

Featuring a Boost 15x110mm thru-axle system, this fork provides added stiffness and security during high-speed descents and technical sections. Its tapered steerer tube ensures compatibility with modern aerodynamic head tubes, maximizing stiffness and precision. The suspension is compatible with RockShox's Charger Damper (not specified here but available in the lineup), delivering consistent performance and easy adjustability.

Style & Use Case:

Designed for serious cross-country racers and trail enthusiasts, the RockShox SID Ultimate combines sleek aesthetics with sport-specific functionality. Its lightweight design reduces rider fatigue, while the durable construction withstands the rigors of competitive racing and rugged trail riding. Ideal for 29" and 27.5+ wheel setups, it excels in delivering smooth, controlled rides over challenging terrain.

Innovative & Differentiating Features:

- DebonAir air spring technology for enhanced sensitivity and plushness

- Tapered aluminum crown and upper tube for durability and torsional strength

- Boost 15x110mm thru-axle for increased stiffness and precise wheel clearance

- Tapered steerer tube for improved steering accuracy and compatibility with modern frames

Upgrade your bike's suspension with the RockShox CSU SID Ultimate 110-120 mm DebonAir fork and experience unmatched handling, responsiveness, and confidence on every trail. Whether racing XC or tackling technical trails, this fork provides the performance and reliability you need to ride faster and farther.

  • Engineered with high-strength aluminum and lightweight carbon composite components, the RockShox SID Ultimate CSU offers exceptional durability and responsiveness for XC and trail riding.
  • Advanced DebonAir air spring technology ensures a smooth, sensitive ride with improved small bump compliance and increased tuneability for different terrains and rider preferences.
  • Designed with a tapered steerer tube and Boost 15x110mm dropout compatibility, this fork provides enhanced steering precision, stability, and integration with modern 29-inch and 27.5+ wheels.
  • Features a 51mm offset optimized for aggressive handling and agility in cross-country and trail riding scenarios, making it ideal for competitive racers and all-mountain enthusiasts.
  • Equipped with 32mm high-performance crown, steerer, and upper tube assemblies, this fork delivers top-tier engineering, reduced weight, and improved stiffness for maximum control and confidence on technical trails.
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