Carbon Fiber Sporting Goods
Innovative Bluetooth Wireless Earbuds
Innovative Bluetooth Wireless Earbuds
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Experience Exceptional Sound Quality with Bluetooth Wireless Earbuds
A high-modulus carbon fiber road rim engineered for disc brake drivetrains. Available in two aerodynamic heights — 45mm and 50mm — with a 34mm outer width and 25mm inner width optimized for 28–32mm tire fitment. Suited for competitive racing, endurance riding, and premium custom wheel builds for cycling brands and professional teams.
Key Specifications
| Specification | 45mm Height | 50mm Height |
|---|---|---|
| Rim Height | 45mm | 50mm |
| Outer Width | 34mm | 31mm |
| Inner Width | 25mm | 25mm |
| ERD | 539mm | 539mm |
| Weight (Normal) | 480 ±15g | 480 ±15g |
| Weight (Superlight) | 430 ±10g | 430 ±10g |
| Weight (Ultra-light) | 380 ±10g | 380 ±10g |
| Max Rider Weight | 120 kg | 120 kg |
| Tire Pressure Range | 100–125 psi | 100–125 psi |
| Rim Profile | U-shape (hookless-compatible) | U-shape (hookless-compatible) |
Structural Performance Data
- Forward Compressive Strength: >300 kg
- Lateral Torsion Resistance: >50 kg
- Spoke Hole Tension: >280 kg
- Dynamic Balance Tolerance: <3 g
- Flatness Tolerance: <0.15 mm
- Roundness Tolerance: <0.3 mm
Compatibility & Build Details
- Brake Type: Disc brake only
- Valve Hole: 6.5 mm (customizable)
- Spoke Hole: 4.5 mm (customizable)
- Assembly Hole: 7.5 mm (customizable)
- Nipple Spoke Angle: Front 7°; Rear 5° & 7° (customizable)
- Recommended Tire Width: 28–32mm
- Spoke Drilling: Available in standard and custom hole counts upon request
45mm vs. 50mm: Which Height to Choose?
The 45mm rim offers a balanced aero-to-weight ratio suited for climbing, mixed-terrain endurance rides, and variable crosswind conditions. The 50mm rim delivers greater aerodynamic efficiency at speeds above 35 km/h, making it the preferred choice for flat-course racing and time trial segments. Both heights share the same 25mm inner width and structural integrity ratings.
Note: The 34mm outer width applies to the 45mm height variant; the 50mm height variant carries a 31mm outer width. Confirm your build requirement before ordering.
Customization Options
Available for OEM and private-label orders with options for custom spoke hole count, drilling angle, rim decals, and weight tier selection (Normal / Superlight / Ultra-light). Minimum order quantities apply — contact us for brand partnership pricing.
Frequently Asked Questions
What tire widths are compatible with a 25mm inner-width carbon rim?
A 25mm inner width (ETRTO-standard) is optimized for 28mm to 32mm tires. Narrower tires (23–25mm) are not recommended as the wide rim profile creates an unfavorable tire-to-rim ratio that reduces cornering stability and increases pinch-flat risk.
Is a 45mm or 50mm rim better for aero performance?
The 50mm height produces measurably lower aerodynamic drag at speeds above 35 km/h on flat terrain. However, it is more sensitive to crosswinds above 20 km/h. The 45mm variant is the more versatile choice for riders who encounter varied wind conditions or significant elevation change.
How much do these carbon rims weigh compared to aluminum rims?
The Ultra-light build weighs 380 ±10g per rim — approximately 30–40% lighter than a comparable aluminum disc rim (typically 500–580g). The weight reduction directly lowers rotational mass, improving acceleration responsiveness.
Are these rims tubeless-compatible?
The U-shape (hookless) profile is designed for tubeless and tubeless-ready tire setups when paired with an appropriate tubeless rim tape and valve. Maximum tire pressure of 125 psi applies; verify tubeless tire manufacturer pressure limits before inflation.
What is the maximum rider weight for these rims?
Rated for riders up to 120 kg (264 lbs), inclusive of rider, clothing, and cargo weight. Riders approaching this limit should select the Normal weight tier (480 ±15g) for maximum structural margin.
Can I order custom spoke counts or drilling angles?
Yes. Spoke hole diameter, assembly hole diameter, valve hole diameter, and nipple drilling angle are all customizable. Custom configurations are available for OEM partners and professional team orders with standard lead times.
Advanced Sound Technology for Crystal Clear Audio
Bluetooth wireless earbuds are designed to deliver clear, high-fidelity sound with deep bass and crisp treble. Using advanced sound drivers and noise-cancellation features, these earbuds enhance your listening experience by reducing background noise and providing immersive audio wherever you go. Whether you’re enjoying music, podcasts, or calls, Bluetooth wireless earbuds offer outstanding sound performance that meets modern audio standards.
Comfortable and Secure Fit for All-Day Use
One significant advantage of Bluetooth wireless earbuds is their ergonomic design, which provides a comfortable and secure fit even during extended wear. Lightweight materials and customizable ear tips ensure that the earbuds stay in place during workouts, commutes, or daily activities. This focus on comfort helps prevent ear fatigue and enhances convenience for users who need a reliable wireless audio solution throughout the day.
Long Battery Life with Quick Charging Features
Bluetooth wireless earbuds come equipped with rechargeable batteries that offer several hours of continuous playback on a single charge. Many models include fast-charging capabilities, allowing you to quickly boost battery life in just a few minutes. Additionally, compact charging cases provide multiple full charges while on the go, ensuring uninterrupted wireless audio without the hassle of frequent plugging in.
