Crafted entirely from carbon fiber, this gravel bike rim strikes the perfect balance between rigidity and lightweight performance, with a single unit weighing just 405-425g. Engineered with a disc brake system and tubeless-ready design, it’s optimized to integrate seamlessly with modern gravel setups, ensuring reliable performance across diverse riding scenarios.

Its impressive versatility shines through in its wide compatibility with 33-72C tires and adjustable 20-60psi pressure range, making it ready to tackle all terrains—from rough gravel paths to smooth tarmac. For riders seeking a personalized touch, it offers full customization options, including bespoke paintwork, unique aesthetics, and tailored spoke hole counts, allowing for a truly one-of-a-kind setup.

Built with professional-grade durability, this rim is designed to withstand the rigors of complex road conditions, making it an ideal choice for both competitive gravel racing and adventurous off-road journeys.

Product Features and Advantages

Ultimate Lightweight and Rigidity Balance:

Crafted entirely from carbon fiber, each rim weighs only 405-425g. While significantly reducing the rotational inertia of the wheel set, it maintains excellent rigidity, notably enhancing acceleration response and climbing efficiency, making long-distance rides more effortless.

Optimized for Modern Gravel Setups:

Designed specifically for disc brake systems, it delivers linear and stable braking, ensuring precise speed control even in muddy or rainy conditions. It natively supports tubeless tires, achieving high airtightness without inner tubes, reducing the risk of punctures while further lightening the wheel set.

All-Terrain Versatility:

Compatible with a wide range of 33-72C tires, it stably accommodates everything from race-grade narrow tires to high-traction wide tires. With an adjustable pressure range of 20-60psi, it can flexibly adapt to different road hardness—lower pressure enhances grip on soft terrain, while higher pressure improves rolling speed on hard surfaces, easily handling diverse scenarios such as gravel, dirt roads, and pavement.

In-Depth Customization:

Offers customization options for paint colors, patterns, and spoke hole counts. It not only satisfies riders' unique aesthetic expressions for their equipment but also adapts to different spoke tensions and wheel rigidity requirements, providing exclusive solutions for professional riders and DIY enthusiasts.

Professional-Grade Durability：

The carbon fiber material undergoes rigorous strength testing, balancing lightweight properties with impact resistance. Even in complex off-road conditions across Europe and America, it maintains stable performance over the long term, striking a perfect balance between competitive needs and durability, making it suitable for both racing and adventure rides.

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 Composite Construction:

The rim is crafted using high-grade carbon fiber pre-preg materials, layered and molded through a precision manufacturing process. This composite structure ensures a optimal strength-to-weight ratio, with the 405-425g weight achieved via strategic material distribution—thicker reinforcement in stress-prone areas (e.g., bead hooks and spoke holes) and lighter layering in non-critical zones.

Disc Brake Integration Design:

A dedicated hub interface and rotor mounting points are engineered into the rim’s sidewall, ensuring seamless compatibility with modern disc brake systems. The sidewall geometry is optimized to dissipate heat generated during braking, preventing thermal degradation of the carbon fiber and maintaining structural integrity under prolonged use.

Tubeless-Ready Bead Profile:

The rim features a hooked bead design with airtight sealing lips, specifically shaped to lock tubeless tires securely in place. Internal channeling within the rim bed minimizes air leakage, while a smooth, low-friction surface reduces tire installation resistance—critical for reliable tubeless performance without inner tubes.

Wide Rim Bed & Spoke Hole Configuration：

With an internal width tailored to support 33-72C tires, the rim bed provides ample lateral stability for wide tires under varying pressures. Spoke holes are precision-drilled and reinforced with integrated inserts, allowing customizable hole counts (per user specification) while evenly distributing spoke tension across the rim’s circumference to prevent warping.

Impact-Resistant Edge Treatment：

The rim’s outer edges and corners are reinforced with a slightly thicker carbon fiber layer and rounded contours, designed to absorb impacts from rocks, curbs, or rough terrain. This structural detail enhances durability without compromising the overall lightweight design, making it suitable for aggressive off-road use.

Application Areas

Application areas for the G42X36TL carbon bicycle rim:

• Gravel Racing and Competitive Events:

The rim’s ultra-lightweight carbon fiber construction (405-425g) and optimized rigidity make it ideal for high-intensity gravel races. Its compatibility with 33-72C tires—from narrow, low-rolling-resistance race tires to wider options for variable terrain—paired with adjustable 20-60psi pressure, ensures peak performance on courses that mix gravel, dirt, and pavement. The disc brake integration provides reliable stopping power even in wet or muddy race conditions, giving riders a competitive edge.

• Mixed-Surface Commuting and Training:

For riders who navigate a mix of pavement, gravel, and city streets, the rim’s versatility shines. Its adjustable pressure (20-60psi) allows quick adaptation: higher pressure for smooth roads to reduce rolling resistance, and lower pressure for gravel segments to boost grip. The disc brake system ensures consistent performance in urban environments, whether braking in traffic or tackling wet curbs, making it a practical choice for daily training or commuting.

• Adventure Off-Road Riding: 

Designed to handle rough and unpredictable terrain, the rim’s impact-resistant edge treatment and reinforced carbon fiber structure excel on trails with rocks, roots, and uneven surfaces. Its tubeless-ready bead profile minimizes the risk of flats during long-distance expeditions, while the wide rim bed supports larger, more cushioned tires (up to 72C) for enhanced comfort on extended off-road journeys—perfect for exploring remote backcountry routes or multi-day gravel tours.

Technical Parameters

Customized Weaves & Finishes:

Customized Holes:

Weight Check:

Clean burrs ＆ residues:

Rim Diameters Check:

Cleaning:

Packing:

G42X36TL Product Show