• Bola 27.5" Carbon Gravel Rim with 30mm profile, 25mm inner width, featuring UCI logo and 3-year warranty. Tubeless ready.
  • Side profile of Bola 27.5" 30mm carbon rim, hookless, tubeless ready for gravel bikes
  • Cross-section drawing of Bola 27.5" carbon gravel rim, showing 25mm inner width
  • Tubeless-ready Bola 27.5" carbon gravel rim, detailed view of valve hole and bead seat
  • Close-up of Bola 27.5" carbon rim surface texture, matte finish for gravel bike builds
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Carbon Fiber Sporting Goods

Bola 27.5" Carbon Gravel Rim, 30mm Profile, 25mm Inner Width, Tubeless Ready

Bola 27.5" Carbon Gravel Rim, 30mm Profile, 25mm Inner Width, Tubeless Ready

$310.00 USD
$330.00 USD $310.00 USD
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🚚 预计发货：15天内

Bola 27.5" Carbon Gravel Rim – 30mm Profile, 25mm Inner Width, Tubeless Ready

Direct answer: The Bola 27.5" carbon gravel rim features a 30mm aerodynamic profile and 25mm internal width, engineered for competitive gravel and all-terrain cycling. Compatible with tires 1.9"–2.4", its tubeless-ready, hookless-compatible design delivers stability, low rolling resistance, and improved puncture protection on diverse surfaces. Available in Standard (395g ±15g) and Superlight (355g ±10g) layups—both precision-built with extensive quality controls and custom drill options.

Technical Specifications

Feature Specification
Wheel Size 27.5" (650B)
Rim Profile Height 30mm
Rim Outer Width 30mm
Rim Inner Width 25mm
ERD 540mm
Weight (Standard) 395 ± 15g
Weight (Superlight) 355 ± 10g
Rim Shape V-shape, Hookless Compatible
Valve Hole 6.5mm (custom options available)
Material High modulus carbon fiber
Tire Compatibility 1.9"–2.4" (tubeless, clincher)
Disc Brake Yes

Use-Case Comparison

  • Gravel and mixed terrain: Wide 25mm internal width supports stability and optimal tire shape for unpaved roads.
  • Endurance and light trail: Low rim weight enables responsive handling and acceleration.
  • Professional and custom builds: Factory drilling supports unique hub/drive configurations.

Frequently Asked Questions

  • Is a 25mm inner width rim good for gravel riding?
    Yes. 25mm inner width enhances tire support for gravel tires (1.9"–2.4"), improving grip and reducing pinch flats on rough or variable surfaces.
  • How does 30mm rim depth compare to 40mm?
    30mm offers a balance of low aerodynamic drag and responsive handling; deeper profiles increase aerodynamic efficiency but may add weight and stiffness, impacting comfort and acceleration.
  • Are these rims certified or lab-tested?
    Each rim is batch-tested for maximum spoke tension (>280kg) and impact (per ISO 4210) as part of our QC program.
  • Are tubeless carbon rims beneficial for 27.5 inch builds?
    Yes, they enable lower tire pressures, reduce puncture risk, and improve comfort and performance for both gravel and MTB uses.
  • Should I choose Superlight or Standard?
    Superlight rims (355g) support ultra-light builds for race-focused performance; Standard (395g) provides robust durability with minimal weight trade-off. Actual selection depends on rider weight, use-case, and desired wheel characteristics.

Warranty and Quality Assurance

  • Warranty: 3 years, structural defects covered.
  • Custom Options: Drilling patterns and finish customization supported for OEM/brand builds.
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