This road bike wheel hub, crafted from high-modulus carbon fiber, stands as a premium choice for riders seeking top-tier performance. Boasting aerodynamic dimensions of 45mm in height and 26mm in outer width, it effectively reduces wind resistance while enhancing tire support, working seamlessly with the tubeless system to minimize rolling resistance and ensure stable handling during high-speed cruising, sprints, climbs, and cornering. What sets it apart is the full customization option: riders can tailor the spoke hole count, opt for carbon spokes to boost efficiency, and select custom finishes and patterns, making it both a high-performance component and a personalized statement piece.

Product Features and Advantages

Carbon Fiber Construction for Peak Performance:

Crafted from high-modulus carbon fiber, it inherently combines lightweight and high strength—with a single wheel weighing as low as 390g, it is over 30% lighter than traditional aluminum alloy hubs. Yet, it can withstand higher riding loads and impacts, ensuring stable rigidity during high-speed rotation, reducing unnecessary energy loss, and empowering riders to easily tackle long-distance rides and high-intensity sprints.

Aerodynamic Golden Ratio:

45mm Height: The precisely optimized profile design significantly reduces wind resistance, especially during flat-road cruising. It effectively cuts through airflow, enhances riding efficiency, and makes every pedal stroke more propulsive.

26mm Outer Width: The widened tire support area, combined with the tubeless system, not only improves the fit between the tire and the ground to reduce vibration but also lowers rolling resistance. It simultaneously enhances grip during cornering, enabling more precise and controlled handling.

Tubeless System for Convenience and Efficiency:

Compatible with a tubeless tire design, it achieves reliable sealing without an inner tube, fundamentally reducing the risk of punctures. Additionally, the lower tire pressure setting further optimizes road feedback and improves riding comfort, making it particularly suitable for complex road conditions during long-distance road rides.

Full-Dimensional Customization for Exclusive Fit:

Customizable Spoke Hole Count: Based on spoke types and riding styles, it ensures uniform spoke tension distribution and enhances durability.

Optional Carbon Fiber Spokes: These further reduce wheel rotational inertia, strengthen transmission efficiency, and make power output more direct.

Personalized Coating and Pattern Designs: Beyond performance, they inject a unique style into your bike, satisfying riders' pursuit of both aesthetics and individuality.

Strict Quality Control:

KOBIKE do 100% tire pressure(150 PSI), flatness(＜0.2mm) and roundness(＜0.2mm) inspections before shipping, also offering 2 years warranty for our carbon rims.

Product Structure

Carbon Fiber Rim Structure:

The rim, forged from high-modulus carbon fiber through advanced layering technology, forms a lightweight yet rigid framework with a single unit weighing as low as 390g. Its 45mm height and 26mm outer width profile is engineered for dual efficiency: the tall, aerodynamic shape minimizes wind drag at high speeds, while the widened cross-section enhances lateral stiffness, reducing flex during hard cornering. The carbon fiber matrix distributes stress evenly across the rim, ensuring durability even under repeated high-load impacts—outperforming aluminum rims in both weight-to-strength ratio and long-term fatigue resistance.

Integrated Tubeless Compatibility:

The rim features a bead lock design optimized for tubeless tires, with airtight sidewalls that eliminate the need for inner tubes. This structural choice reduces rotational weight (by removing tube friction) and creates a seamless interface between the rim and tire, enhancing puncture resistance. The tubeless-ready groove structure also simplifies setup, allowing for easy tire installation and reliable air retention at lower pressures—improving comfort and traction without sacrificing efficiency.

Spoke Hole Customization and Carbon Spoke Integration:

The rim’s pre-drilled spoke holes (with customizable counts) are precision-aligned to match spoke tension requirements, ensuring uniform load distribution across the wheel. When paired with optional carbon fiber spokes, the structure achieves a synergistic weight reduction: carbon spokes are 50% lighter than steel alternatives while maintaining equivalent tensile strength, reducing rotational inertia and enabling faster acceleration. The spoke-to-rim connection points are reinforced with carbon fiber inserts, preventing stress cracks and extending component lifespan.

Hub Compatibility and Structural Synergy：

Though the hub itself is not the focus, the rim’s design is engineered to integrate seamlessly with high-performance hubs. The spoke hole pattern and rim geometry ensure optimal tension transfer from hub to rim, creating a balanced, responsive wheel system. This structural harmony minimizes energy loss during power transmission, translating rider effort directly into forward motion—critical for sprinting and climbing.

Application Areas

Application areas for the D45X26TL carbon bicycle rim:

• Competitive Road Cycling:

This carbon fiber wheel is a staple in professional and amateur road races, where every gram of weight and fraction of wind resistance matters. Its 45mm aerodynamic profile and 390g lightweight design excel in time trials, criteriums, and stage races, helping riders maintain high speeds with less energy expenditure. The enhanced lateral stiffness from the 26mm outer width ensures precise handling during tight pack sprints and technical descents, making it a preferred choice for athletes aiming to shave seconds off their times.

• Long-Distance Endurance Riding:

For century rides, gran fondos, or multi-day tours, the wheel’s tubeless compatibility shines. By eliminating inner tubes, it reduces the risk of flats—critical for long stretches without support—and the lower tire pressure capability enhances comfort over rough pavement. The carbon fiber construction’s fatigue resistance also ensures consistent performance over extended distances, withstanding the repeated stress of hours in the saddle.

• Recreational Performance Riding:

Enthusiasts seeking a balance of speed and versatility will find this wheel ideal for weekend group rides or solo training sessions. Its customizable spoke options allow riders to tailor the wheel’s feel to their style—whether prioritizing acceleration with carbon spokes or durability with traditional steel ones. The personalized coating and pattern choices also appeal to riders who want their bike to reflect their personality while enjoying pro-level performance.

• Time Trial and Triathlon:

In disciplines where aerodynamics are paramount, the wheel’s streamlined 45mm height minimizes drag, a key factor in time trials and triathlon bike legs. The rigid carbon fiber structure ensures efficient power transfer, translating hard efforts into forward motion—essential for maintaining pace against the clock. Its compatibility with high-performance hubs further optimizes the wheel’s responsiveness, a boon for athletes transitioning from swim to bike or tackling flat, fast courses.

Technical Parameters

Customized Weaves & Finishes:

Customized Laser Engraving Brake Track:

Customized Holes:

Weight Check:

Clean burrs ＆ residues:

Rim Diameters Check:

Cleaning：

Packing：

D45X26TL Product Show