KOIBIKE leverages cutting-edge technology from its own factory to create the XC-M30X34HL-29ER-UL All-Mountain rim, designed for off-road riders who pursue ultimate speed and experience. The innovation of this off-road rim lies in its "precise and efficient, scenario-specific fit." Firstly, it features a synergistic innovation in materials and structure. Using Toray T1100-grade carbon fiber, a specialized weaving process achieves superior strength and rigidity compared to traditional rims, while keeping the weight to a controlled 350 ± 15 grams. The 30mm x 34mm wide and high rim ensures longitudinal rigidity and aerodynamic performance while providing stable support for the tire. The hookless straight-edge design simplifies tire installation and improves sealing performance. This innovative application of tubeless technology from road rims expands the application range of tubeless tires in complex terrain. The All-Mountain model offers enhanced impact resistance, making it suitable for high-intensity riding on challenging terrain; the Cross-Country model focuses on reducing rolling resistance, making it suitable for racing. The factory supports personalized painting and parameter fine-tuning, providing highly adaptable core components for vehicle manufacturers and dealers.

Product Features and Advantages

Ultra-Lightweight and Efficient Performance: 

Thanks to the high strength and one-piece molding process of T1100-grade carbon fiber, the ultra-light weight of 350 ± 15 grams is approximately 15% lighter than similar-sized rims. This significantly reduces rotational inertia, resulting in faster acceleration and easier climbing, giving you an advantage in off-road racing.

Precise Terrain Adaptation: 

The 34mm external width accommodates tires from 2.1-2.5 inches, and with a range of tire pressures from 19 to 27, it allows for flexible adjustment based on terrain hardness. On common off-road terrain, such as hard shoulders and gravel, it provides ample grip while reducing unnecessary rolling resistance, improving riding efficiency.

Hookless Straight Rims: 

The hookless design creates a large-area seal with the tubeless tire bead, resulting in a 25% improvement in airtightness compared to traditional hooked rims and a 40% reduction in installation time. This reduces stress concentration at the rim edge, improving impact resistance by 18%, and providing increased wear resistance in complex terrain. Dual performance versions: The All-Mountain model boasts a 10% increase in torsional strength through increased carbon fiber stacking density, perfect for extreme conditions like steep slopes and continuous bumps. The Cross-Country model utilizes a thinner, lighter carbon fiber weave, reducing rolling resistance by 5%, making it ideal for speed-conscious cross-country racing.

Durable exterior design: 

The UD/Marble/12K/12K twill finish utilizes a wear-resistant coating technology with a surface hardness of HRC48, effectively resisting sand and stone scratches while maintaining its aesthetic appeal over long-term use, ensuring both practicality and aesthetic appeal.

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

Spoke Hole Design: 

Equidistantly spaced from 16 to 36 holes are reinforced, allowing each hole to withstand a tensile load of 300kg, a 20% increase over conventional designs. This ensures a secure spoke connection even during intense riding.

Hookless Construction: 

The straight-edge design features a smooth curve, creating surface contact with the tire bead for enhanced sealing. The rim edge is finely polished to reduce tire wear during installation and extend tire life.

Rim Mechanical Design: 

The 30mm-tall rim utilizes a "cross-woven" carbon fiber structure, with longitudinal fibers enhancing tensile strength and transverse fibers improving torsional resistance. With a 34mm outer width, lateral support during cornering is increased by 15%, ensuring more stable handling.

Bead Sealing System: 

Sealing grooves on the inner side create a multi-layer seal with the tubeless tire, keeping tire pressure drop to 0.4 psi/hour even in low temperatures, making it more stable than traditional designs.

Lightweight Details: 

The rim features a hollow design in non-stressed areas, further reducing weight while maintaining strength. The matte finish reduces drag and enhances the appearance.

Application Areas

Application areas for the XC-M30X34HL-29ER-UL carbon bicycle rim:

Off-road Racing: The optimized rolling resistance of off-road rims makes them an ideal choice for off-road racing, helping riders maintain high speeds on uneven terrain and improving performance. All-Mountain Adventure: The tough all-mountain rims are ideal for adventure riding across challenging terrain, providing reliable support on rocky roads and muddy trails.

Daily Off-Road Training: Combining lightweight and durable features, they are ideal for everyday off-road training for cycling enthusiasts, improving training efficiency and adapting to the demands of various training venues.

Team Equipment Upgrade: Customizable paint and specifications can be customized to meet team needs, enhancing the uniformity and performance of team equipment and providing a superior riding experience for team members.

High-End Bike Accessories: As a core component of high-end off-road bicycles, they enhance the performance and class of the entire vehicle, attracting consumers who seek high-quality riding.

Technical Parameters

Customized Weaves & Finishes:

Customized Holes:

Weight Check:

Clean burrs and residues

Rim Diameters Check:

Cleaning

Packing

XC-M30X34HL-29ER-UL Product Show