BOLA 40mm Carbon Road Rim | 700C Tubeless, 24mm/25mm Inner Width

Explore the Features of the 40mm Carbon Tubeless Road Rim

The BOLA 40mm carbon road rim is engineered for performance-focused cyclists seeking lightweight, durable, and aerodynamic wheel builds. With a tubeless-ready, hooked bead design in 700C, and available inner widths of 24mm or 25mm, it supports wider tire profiles ideal for endurance, climbing, and flat-course racing. Four weight options enable tailored setups based on specific use cases.

Key Features and Specifications

• Rim Depth: 40mm V-profile, for aerodynamic stability on flats and robust handling in crosswinds
• Inner Width: 24mm or 25mm, optimized for 25–32mm tubeless or clincher road tires
• Outer Width: 30mm
• Weight Tiers: Extreme Light (360±10g), Ultralight (380±10g), Superlight (400±10g), Normal (435±15g)
• Compressive Strength: >300kg
• Lateral Torsion: >50kg
• ERD: 558mm
• Bead Type: Hooked (tubeless-ready), compatible with standard 6.5mm valve hole tubeless valves
• Tyre Compatibility: Fits 25–32mm road tires (700C)
• Max Rider Weight: 100kg
• Tyre Pressure Range: Min 100 psi, Max 125 psi

Specification Comparison Table

Frequently Asked Questions

• Q: What are the best 40mm carbon road rims for lightweight climbing builds?
  A: The BOLA 40mm Extreme Light and Ultralight variants (360g/380g) are engineered for climbing use-cases, offering very low rim weight with tested compressive/lateral strength.
• Q: Is a 24mm inner wide tubeless rim good for endurance road cycling?
  A: Yes—the 24mm and 25mm width supports 25–32mm tires, providing stability, comfort, and lower rolling resistance for long-distance and mixed road conditions.
• Q: How much do ultralight carbon rims weigh compared to standard alloy road rims?
  A: BOLA’s Ultralight carbon rims weigh 380g, typically 100–200g less than most 40mm deep alloy road rims, without sacrificing structural integrity.
• Q: What should I look for when choosing hooked tubeless carbon rims for a road bike?
  A: Confirm strength testing (BOLA rims: >300kg compressive, >50kg torsion), robust tolerance (<0.15mm flatness), compatible bead seat, and pressure rating for safe tubeless use.
• Q: Are 40mm carbon rims faster than 30mm rims for flat road racing?
  A: 40mm rims, such as these V-profile BOLA models, deliver enhanced aerodynamic benefits over 30mm rims, suitable for sustained high-speed use on flat terrain.

Certifications and Tolerances

• Forward Compressive Strength: >300kg
• Lateral Torsion: >50kg
• Spoke Hole Tension: >280kg
• Flatness tolerance: <0.15mm
• Roundness tolerance: <0.3mm

Real-World Use Case Alignment

• Professional teams: Optimize climbing or all-round setups by selecting variant
• Endurance: Enhance long-distance comfort and handling
• Custom builds: Options for weight reduction or increased durability at value pricing

Premium Lightweight Carbon Construction

The 40mm carbon tubeless road rim is crafted from advanced carbon fiber materials that prioritize both durability and weight reduction. This construction offers an ideal balance, providing riders with a responsive and agile cycling experience without compromising strength. The high-quality carbon ensures that the rim can withstand the demands of road cycling while delivering a featherlight feel, critical for competitive and recreational riders alike. This makes the BOLA rim a top choice for cyclists seeking premium performance and endurance on varied road conditions.

Optimized 700C Tubeless Compatibility

Designed specifically for 700C wheel setups, the BOLA 40mm carbon tubeless road rim is optimized to support tubeless tire systems efficiently. The rim features a precise bead seat that enhances tire sealing, reducing the risk of leaks and enabling lower tire pressures for improved traction and comfort. Tubeless compatibility also translates into fewer punctures and a smoother ride, making it an excellent choice for riders who want reliability and performance combined in one package.

Versatile 24mm/25mm Inner Width Design

The rim’s distinctive 24mm and 25mm inner width options offer versatility that accommodates a wide range of tire widths. This flexibility allows cyclists to choose tires that best suit their riding style, from narrower road tires to wider options for enhanced grip and stability. The wider rim profile improves tire support and reduces rolling resistance, contributing to better handling and overall ride quality. These features make the BOLA rim suitable for riders aiming to customize their bike setup for speed, comfort, or endurance.