27.5" Superlight Carbon MTB Rim, 30mm Inner, 370g – Bola

27.5" Superlight Carbon MTB Rim | 30mm Inner Width | 370g – Bola

Optimized for trail, cyclocross, and all mountain riding, the Bola 27.5er carbon rim offers a 30mm inner width and a superlight 370g (±10g) build. Engineered with a U-channel profile and 30mm height, it's suitable for tubeless setups (45–65 psi, max rider weight 100kg). Widely specified by competitive teams seeking stability and traction with 2.25"–2.6" MTB or 35–42mm cyclocross tires.

Key Specifications

• Material: High-modulus carbon fiber (T700/T800 equivalent)
• Weight (Superlight): 370g ±10g
• Inner Width: 30mm
• Outer Width: 36mm
• Height: 30mm (U-shape, hookless-compatible)
• Effective Rim Diameter (ERD): 540mm
• Compressive Strength: >300kg; Lateral Torsion: >50kg
• Brake Type: Disc-specific
• Warranty: 3 years (manufacturing defects)

Specification Comparison

FAQs

• Q: Is a 30mm inner width suitable for cyclocross?
  A: Yes. A 30mm inner width supports 35–42mm cyclocross tires, providing improved contact for traction without exceeding UCI limits.
• Q: Which tires are compatible?
  A: Fits 27.5" (650b) tubeless or clincher tires 2.25"–2.6"; cyclocross tires 35–42mm.
• Q: What is the recommended max rider weight?
  A: Up to 100kg per manufacturer test standards.
• Q: How does 30mm width affect tire shape?
  A: It increases tire air volume for better traction and stability on loose or off-camber terrain.

Certifications & Testing

• Material Test: ISO4210, EN14766
• QC: 100% ultrasound & dynamic stress tested