This product is a full carbon fiber bicycle rim, with its core advantage lying in the combination of high-performance materials and customized design.

Crafted from high-quality carbon cloth from Toray (Japan), it boasts both high strength and lightweight properties, ensuring durability and efficiency during rides. In terms of specifications, the 35mm height optimizes aerodynamics and stability, while the 30mm outer width paired with 24mm inner width is compatible with wider tires, enhancing grip and comfort.

Two versions are available: the hooked edge version facilitates easy tire installation, suitable for users seeking convenience; the straight edge version offers superior aerodynamics and excellent sealing performance with tubeless tires, meeting professional performance needs.

Comprehensive customization services are supported, including carbon fiber textures (e.g., UD, 3K), spoke hole counts, laser/sticker logos, and paint colors, allowing for the creation of exclusive styles as needed. The factory implements strict quality control throughout the entire process to ensure product quality.

Product Features and Advantages

Superior Material Quality for Unmatched Performance:

Crafted entirely from high-grade carbon fiber, our rims utilize raw materials sourced exclusively from Japan’s Toray—renowned globally for producing some of the finest carbon cloth. This premium material blend delivers an exceptional balance of ultra-high strength and featherlight weight, ensuring not only long-lasting durability to withstand rigorous rides but also reduced rotational mass, which directly translates to faster acceleration, easier climbing, and overall enhanced riding efficiency.

Meticulously Optimized Specifications for All-Round Versatility:

35mm height: Engineered to strike the perfect balance between aerodynamic efficiency and structural stability. This design minimizes wind resistance during high-speed road rides, allowing for smoother, faster cruising, while also providing the rigidity needed to maintain control and stability when tackling steep climbs or uneven terrain.

30mm outer width + 24mm inner width: The thoughtfully designed wide-body profile is a game-changer for tire compatibility. It seamlessly accommodates wider tires, which increases the contact patch with the ground—boosting grip and cornering confidence, especially in variable conditions. Additionally, this width allows for lower tire pressure, effectively absorbing road vibrations and delivering a significantly more comfortable ride without sacrificing performance.

Two Specialized Versions Tailored to Diverse Riding Needs:

Hooked edge rims: Designed with convenience in mind, these rims feature a traditional hooked profile that makes tire installation and removal quick and hassle-free. They offer broad compatibility with both clincher and tubeless tires, making them an excellent choice for casual riders, commuters, or anyone who values ease of maintenance.

Straight edge rims: Built for performance enthusiasts, these rims boast a sleek, streamlined design that elevates aerodynamic efficiency. When paired with tubeless tires, their straight profile creates an airtight seal, drastically reducing the risk of air leakage and enhancing overall tire performance—perfect for competitive riders, gravel adventurers, or those who demand the highest level of precision from their equipment.

Extensive Customization Options for a Truly Unique Ride:

Carbon fiber textures: Choose from classic UD (unidirectional) for a subtle, premium look, or bold 3K/12K weaves for a striking, eye-catching pattern.

Add laser-etched logos, custom stickers, or vibrant paint finishes to reflect your personality or brand identity.

Rigorous Quality Control for Peace of Mind：

Manufacturing processes, every rim undergoes strict quality checks—from raw material inspection to final production. This ensures consistent performance, reliability, and adherence to the highest industry standards, so you can ride with confidence, no matter where your journey takes you.

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

Rim Body:

Constructed by stacking Toray (Japan) carbon fiber cloth (typically T700 or higher grades) through a precisely engineered layup design, shaped to meet the 35mm height, 30mm outer width, and 24mm inner width specifications.

The layup angles of the carbon fiber cloth (e.g., 0°, 45°, 90°) are optimized: 0° layers enhance longitudinal rigidity to withstand impact forces during riding, while 45°/90° layers improve lateral torsional resistance, ensuring stability at high speeds and on complex terrains.

Edge Design (Hooked or Straight):

Hooked edge version: Features a circular ridge (the "hook") on the inner side of the rim’s edge, designed to lock the tire bead securely. This accommodates both traditional tubed tires and tubeless setups, enhancing the stability of the tire-rim fit and simplifying installation.

Straight edge version: Boasts a smooth, straight-walled edge without ridges. It forms a line-contact seal with tubeless tire beads, paired with an airtight resin coating on the rim’s inner surface to improve sealing under tubeless conditions, reducing air leakage risk while optimizing aerodynamic shape.

Spoke Hole Zone:

The outer layer is coated with a clear lacquer (or custom paint) to protect the carbon fiber texture from abrasion and UV damage, while smoothing the surface to optimize aerodynamic performance.

Airtight Layer (Exclusive to Straight Edge Version)：

The inner side of straight edge rims is additionally sprayed with a specialized airtight resin, forming a sealed chamber with tubeless tires. This eliminates the need for inner tubes, reducing weight and improving fault tolerance in case of punctures.

Application Areas

Application areas for the D30X28TL carbon bicycle rim:

• Road Cycling:

Ideal for racing road bikes and endurance road bikes. The 35mm height, with its aerodynamic design, reduces wind resistance during high-speed cruising, while the lightweight nature enhances acceleration and climbing efficiency. The wide-body specification, paired with wider road tires (e.g., 28C, 30C), improves road grip—making it suitable for road training, amateur races, and long-distance rides.

• Gravel/Adventure Cycling:

 The straight edge version’s tubeless sealing design and wide-body compatibility (supporting 32C and larger gravel tires) handle complex terrains like gravel and sand, balancing puncture resistance and comfort. The high-strength carbon fiber material withstands road bumps and impacts, making it perfect for gravel adventures and multi-terrain crossings.

• Commuting & Leisure Riding: 

The hooked edge version’s easy installation caters to daily commuting needs. Its lightweight design reduces riding fatigue, while customizable paint and textures meet personal aesthetic preferences, combining practicality and visual appeal. It is suitable for urban short commutes and weekend leisure rides.

• Racing & Professional Competitions：

The high strength and low weight of Toray (Japan) carbon fiber, combined with customizable spoke hole counts (optimizing wheel rigidity), meet professional riders’ demands for extreme performance. It is applicable to regional road races, time trials, and other competitive scenarios.

Technical Parameters

Customized Weaves & Finishes:

Customized Holes:

Weight Check:

Clean burrs ＆ residues:

Rim Diameters Check:

Cleaning：

Packing：

D35X30TL Product Show