Carbon Fiber Sporting Goods
BOLA 120mm Aero Carbon Rim 700C – Hooked Tubeless, 28mm Wide, Time Trial & Triathlon
BOLA 120mm Aero Carbon Rim 700C – Hooked Tubeless, 28mm Wide, Time Trial & Triathlon
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The BOLA 120mm Aero Carbon Rim 700C is engineered for athletes prioritizing maximum aerodynamic efficiency in time trial and triathlon events. Its 120mm deep UV-shaped profile, 28mm external and 21.5mm internal width, and hooked tubeless bead design enable stable high-speed performance with both 700x25c and 700x28c road tires. Certified to ETRTO tubeless-ready standards, this high-modulus carbon composite rim supports tire pressures of 100–125 psi and riders up to 125kg, balancing lightweight build (655g ±15g) with strength for competitive conditions.
Key Features & Specifications
- Rim Size: 700C (ISO 622)
- Rim Depth: 120mm aerodynamic UV-shape
- Width: 28mm outer / 21.5mm inner
- Bead Type: Hooked tubeless (ETRTO standard)
- Weight: 655g ±15g
- Max Tire Pressure: 100–125 psi
- Max Rider Weight: 125kg
- Certification: ETRTO, Tubeless-Ready
- Material: High-modulus carbon fiber composite
Performance Comparison
| Attribute | BOLA 120mm Rim | BOLA 88mm Rim |
|---|---|---|
| Rim Depth | 120mm | 88mm |
| Aero Advantage | Highest (for flat/straight courses) | Mid-level |
| Crosswind Handling | Reduced stability in gusts vs. 88mm | More stable |
| Weight | 655g | Lighter |
| Tire Compatibility | 25–28mm tubeless/clincher | 25mm+ clincher/tubeless |
| Best Use | TT, Triathlon (speed focus) | All-round TT, some road |
Frequently Asked Questions
What are the benefits of a 120mm deep aero rim for triathlon and time trial?
The 120mm deep rim reduces aerodynamic drag, optimizing speed for flat time trial and triathlon courses, especially at high speeds above 40 km/h. However, it may be more susceptible to crosswind forces than shallower rims.
Is this 28mm wide hooked tubeless rim compatible with 700x25c and 700x28c tires?
Yes, the 28mm outer and 21.5mm inner width supports both 700x25c and 700x28c tubeless or clincher tires, offering modern tire compatibility.
How does a 120mm deep-section rim compare to an 88mm rim for aerodynamics?
The 120mm rim offers superior aerodynamic performance at sustained high speeds and in straight-line conditions, while the 88mm rim offers more crosswind stability and is better suited for mixed terrain or variable weather.
What is the maximum rider weight supported by this rim?
The BOLA 120mm aero carbon rim is rated for riders up to 125kg, verified by in-house and ETRTO tubeless-ready test protocols.
Are hooked tubeless aero rims better for high-pressure road racing tires?
Hooked tubeless designs are preferred for safely running higher-pressure (100–125 psi) road tires, providing secure tire retention and broader tire compatibility than hookless alternatives.
