This carbon fiber snow bike rim is engineered for extreme winter conditions, combining high performance with durability. Measuring 80mm in width and 28mm in height, it’s optimized to fit 4.0-5.0" wide snow tubeless tires, delivering superior grip on icy or snowy terrain.

Crafted from premium carbon fiber, it’s lightweight yet cold-resistant, maintaining strength even in sub-zero temperatures. The tubeless-ready design minimizes punctures and simplifies maintenance, while factory-direct pricing ensures value.

With customizable options (colors, logos), it suits both professional snow riders and enthusiasts seeking personalized, reliable gear for winter trails, mountain biking, or cold-weather adventures.

Product Features and Advantages

Carbon Fiber Material: A Performance Benchmark Tailored for Snowy Environments:

Double Advantages of Lightweight and Cold Resistance: Made of high-modulus carbon fiber composite material, it is over 30% lighter than traditional metal rims, reducing the burden of snow riding and improving handling sensitivity. Special processing ensures structural stability even at -20℃, with far superior anti-freezing and anti-corrosion performance compared to ordinary materials, making it more durable in complex environments such as ice, snow and meltwater.

Balance of Rigidity and Toughness: The unique fiber braided structure of carbon fiber can not only withstand the instantaneous pressure from snow slopes and gravel impacts, but also has moderate elasticity to buffer bumps, reducing the risk of rim deformation and prolonging service life.

Professional Snow Rim Design: Perfectly Adapted to Ice and Snow Riding Scenes:

80mm Ultra-Wide Specification, Enhancing Snow Grip: The widened rim supports the installation of 4.0-5.0 inch wide snow tubeless tires, greatly increasing the contact area between the tire and the ice-snow road surface. Combined with the tire pattern design, it can effectively bite into the snow layer, reduce the probability of skidding, and improve the stability of straight-line driving and the safety of cornering.

Optimized Structure to Cope with Snow Challenges: The 28mm low-profile design reduces wind resistance and snow accumulation during snow riding, while enhancing the lateral rigidity of the rim. It is not easy to deform when rolling over ice edges, deep snow pits and other complex terrains, ensuring efficient and stable power transmission.

Tubeless Compatibility, Reducing Snow Failures: The preset sealing groove structure is suitable for tubeless tires, which can achieve tight sealing without inner tubes, avoiding the hidden danger of inner tube aging and cracking at low temperatures, and reducing the maintenance cost of tire blowouts and air leaks during snow riding.

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 Body:

The core structure is crafted from multi-layer high-modulus carbon fiber fabrics, woven in a 0°/90° cross-ply pattern to balance longitudinal rigidity (for power transmission) and lateral toughness (for impact resistance). The overall thickness is optimized at 2.5-3mm, ensuring lightweight performance while maintaining structural strength under low-temperature snowy conditions.

Bead Seat Grooves:

Designed with a tubeless-specific profile, the grooves feature a 5° angled slope and a micro-textured surface to enhance airtightness with the tire beads. This structure prevents air leakage even in extreme cold, eliminating the need for inner tubes and reducing the risk of punctures on snow-covered trails.

Rim Sidewalls:

The 80mm ultra-wide sidewalls are reinforced with an additional layer of carbon fiber at the outer edges, forming a blunt, square-shaped profile. This design increases the contact area with wide snow tires (4.0-5.0 inches), improving grip and stability on icy surfaces. The sidewalls also undergo a special anti-UV coating treatment to resist degradation from snow reflection and low-temperature brittleness.

Spoke Hole Reinforcements：

Each spoke hole is reinforced with a carbon fiber bushing, integrated into the rim body during molding. This localized reinforcement distributes spoke tension evenly, preventing stress concentration and cracking—critical for withstanding the uneven forces encountered on rough snow terrain.

Application Areas

Application areas for the FB28X80-27.5ER carbon bicycle rim:

• Professional Snow Trail Riding:

The carbon fiber rim body, with its low-temperature resistance and lightweight design, excels in deep snow or packed snow trails. The 80mm ultra-wide sidewalls, paired with 4.0-5.0 inch snow tires, provide exceptional grip to navigate steep, slippery slopes and uneven snow-covered terrain. The tubeless bead seat grooves prevent air leakage in freezing temperatures, ensuring reliable performance during long snow rides.

• Winter Mountain Biking:

Ideal for mountainous regions with snowfall, where trails mix ice, gravel, and packed snow. The cross-ply carbon fiber structure balances rigidity and toughness, withstanding impacts from hidden rocks under the snow. Spoke hole reinforcements distribute tension evenly, maintaining stability when tackling sharp turns or rough descents in cold conditions.

• Extreme Cold-Weather Expeditions: 

Perfect for ice field explorations or high-altitude winter trips where temperatures drop below -20℃. The anti-UV coated sidewalls resist degradation from snow reflection and low-temperature brittleness, while the lightweight build reduces fatigue during multi-day expeditions. The tubeless design minimizes maintenance stops in remote, harsh environments.

• Snow-Covered Urban Commuting：

Suitable for daily rides in snowy cities, where icy roads and slush are common. The wide profile enhances stability on slippery pavement, and the carbon fiber material’s durability ensures long-term use despite exposure to road salt and meltwater. Customizable options also let riders match their urban style.

Technical Parameters

Customized Weaves & Finishes:

Customized Holes:

Weight Check:

Clean burrs ＆ residues:

Rim Diameters Check:

Cleaning: 

Packing:

FB28X80-27.5ER Product Show