Rim Brake

The 60mm lightweight disc brake road wheel is designed with aerodynamic performance at its core. Its wind-tunnel-optimized 60mm rim depth further reduces high-speed drag compared to a 55mm rim depth, improving cruising efficiency and making it ideal for both flat-track racing and long-distance events. The 21mm internal width is compatible with tires sized 23-47cm, while the streamlined 30mm external width creates a low-drag profile when inflated, balancing grip and stability. The 28mm brake track is specifically designed for disc brakes, providing ample heat dissipation to prevent thermal fade from continuous braking. The lightweight construction, weighing 450±15g per lap, reduces rotational inertia, ensuring agility even in climbing and accelerating. The UD paint finish features a distinct carbon fiber texture and a multi-layer UV treatment for scratch and UV resistance. It exudes a minimalist, mechanical aesthetic while also withstanding intense use, showcasing its aerodynamic, lightweight, and durable advantages for both racing and training.

Unlike "full-height" rim designs that pursue the ultimate in low drag, the 55mm rim depth represents a rational aerodynamic approach: it doesn't attempt to beat a 90mm deep rim in a wind tunnel, but rather precisely targets the 20–45 km/h speed range most frequently encountered in real-world riding. By optimizing the leading edge curvature and trailing edge breakaway point, this achieves delayed airflow separation. Combined with a 21mm internal width that optimally supports modern 25–28cm tires, this creates a "bead-to-bead aerodynamic profile" that maintains steering neutrality at crosswind angles of 10°–15°, reflecting the design shift from "data-first" to "perception-first." With a 21mm internal width and a 31mm outermost width, the streamlined profile features uniform Toray carbon fiber layup, ensuring a low-drag profile for optimal grip and stability. The 28mm brake track is designed specifically for disc brakes, combining heat resistance with ample heat dissipation to minimize thermal decay from continuous braking. The low weight of 420±15g per lap is achieved thanks to its high modulus, low moment of inertia, and agile acceleration on hills. The gold marble-patterned finish, treated with a multi-layer UV treatment, matches the carbon fiber's texture and is scratch- and UV-resistant, showcasing its lightweight, aerodynamic, and premium feel for both racing and training.

Core Competition Design： A 50mm rim depth improves high-speed cruising by 10% compared to a 45mm rim depth. Its lightweight construction (lap weight: 385±15g) reduces rotational inertia for balanced performance. Dimensional Advantages： The 21mm internal width stably supports tires ranging from 25-47cm. The streamlined 30.5mm outer width creates a low-drag, rounded cross-section when inflated, balancing grip and high-speed stability. The 27.94mm brake track width is designed specifically for disc brakes, providing ample heat dissipation to effectively prevent thermal decay caused by continuous braking and ensure braking safety. Appearance and Craftsmanship： The unique gold marble finish, created through a multi-layer UV curing process, creates a three-dimensional, layered texture. It not only exudes a premium visual quality, but also offers excellent scratch and UV resistance, ensuring long-lasting aesthetics.

Extreme Lightweight Advantage: The D45x26T rim weighs only 320-330 grams per rim, significantly reducing wheel load while maintaining structural strength, making it ideal for competitions seeking extreme performance. Excellent Compatibility: As a tubular rim, its 45mm height and 26mm outer width perfectly complement tubular tires, fully leveraging their advantages of low rolling resistance and high comfort. Competitively Suitable for Road Races: The lightweight carbon fiber construction significantly reduces rotational inertia, making it suitable for road races, time trials, ITT individual time trials, hill climbs, and circuit races.

Optimized Rim Depth and Width: The 55mm rim depth enhances aerodynamics, effectively reducing drag; the 26mm internal width enhances tire stability and supports 23C–42C tubular tires. High-Strength Spoke Configuration: From 16- 24 holes rear designs, with high-tension spokes and optional offset drilling for balanced load distribution. Fully Compatible: Suitable for both rim brake and disc brake systems. Multi-Event Compatibility: Suitable for road races, individual time trials, endurance riding, and light gravel events.

Tubular 50mm Deep × 26mm Internal Width Carbon Tubular Rim 1. Ultra-Lightweight Construction 375g ±15g per rim – Exceptional strength-to-weight ratio for explosive acceleration and climbing efficiency, engineered for competitive riders. 2. Pro-Level Durability 300kg max spoke tension – Withstands extreme loads while maintaining structural integrity. 3. Versatile Tire & Pressure Range Fits 23C–42C tubular tires | 120–150psi optimal pressure – Ideal for road races, endurance events, and mixed-surface riding. 4. Enhanced Spoke Hole Options Symmetrical & offset drilling – Offset pattern boosts rear-wheel lateral stiffness by 18% for efficient power transfer. 5. 26mm Internal Width Optimizes tire profile for: Grip – Wider contact patch/Comfort – Reduced vibration transmission/Aero – Smother airflow transition

KOIBIKE 46mm carbon road rims offer enhanced traction and stability, reduced drag, and exceptional stiffness. Their versatile design opens up endless riding possibilities. If tubeless tires are used to reduce overall weight, they can be installed airtight with bead tape, reducing rotational weight and minimizing the risk of flats. They also allow for lower tire pressures for improved traction and vibration damping, making them ideal for endurance riding and high-speed cornering. These braking road rims are compatible with both rim brake and disc brake systems. Rim brakes offer high-temperature resistance, while disc brakes offer convenient and fast braking. The rim profile enhances speed retention on flats and descents. These carbon road rims are available in a variety of spoke counts (16-36H) and premium finishes (unidirectional, marbled, 12K, and twill), making them ideal for custom and high-end wheel sets. Whether you're building a competition-grade brake wheelset or upgrading to a wider, higher-performance tubeless-ready wheelset, KOIBIKE is your most trusted OEM/ODM partner and the best choice.

-1) Light weight (300 grams/pair) road rim braking hubs specially designed for carbon spokes. -2) Straight pull, 18/21 holes, ceramic bearings, 9*100/10*130 quick release, Ratchet system 36/45/54T. -3) 2*6802(front), 1*15267 and 3 * 6802(rear) bearings, Aluminum alloy 6061(Body)+ 7075(Freehub & Axle) high quality materials. -4)A complete wheelset weight are around 1365 grams(50mm depth), light weight, high stiffness and high spoke tension for high speed road bike racing.