650B Hookless Carbon MTB Rim, 27.5" Asymmetric XC, 25mm Internal

27.5 Hookless Carbon MTB Rim: Lightweight, Strong, and Reliable

Summary: Precision-engineered for cross-country and aggressive trail riding, the Bola 650B (27.5") hookless carbon MTB rim weighs 315±10g (superlight) or 380±15g (standard), supports 2.1–2.4" tubeless tires, and features a modern 25mm inner width. Fully ETRTO compliant for tire/rim safety and tested to >280kgf spoke tension. 3-year warranty and OEM customization available for brands and teams.

Key Specifications

XC & Trail Performance, Verified Compatibility

• 25mm inner width excels with 2.1–2.4" XC and trail tires, supporting 45–65psi, aligning with modern tire standards.
• Asymmetric offset design improves spoke angle to balance tension, increasing lateral rigidity and durability for racing and all-mountain use.
• Hookless tubeless profile reduces pinch flats, supports lower tire pressure, and ensures secure tire fit.
• Meets ETRTO and ISO industry standards for rim/tire safety and performance.

Comparison Table: 650B Carbon MTB Rims

FAQs

• Q: Is a 25mm inner width rim suitable for modern XC and trail tires?
  A: Yes, 25mm inner width accommodates 2.1–2.4" tires, optimizing contact patch and support at lower pressures for cross-country and aggressive trail use.
• Q: Are hookless rims safe for aggressive riding?
  A: This rim is ETRTO certified, designed for 45–65psi, and tested to >280kgf spoke tension for reliable tubeless performance in racing and trail environments.
• Q: What is the main advantage of an asymmetric (offset) rim in MTB?
  A: Offset increases spoke tension balance between drive/non-drive sides, improving wheel stiffness and longevity.
• Q: What tire and hub standards are compatible?
  A: Compatible with 27.5"/650B wheels, ETRTO-compliant tubeless tires (2.1–2.4"), and Boost/non-Boost hubs supporting 28–32 spokes.
• Q: How does the rim compare with other ultralight 650B options?
  A: The Bola rim offers lower verified weight, ETRTO/ISO compliance, asymmetric design, and OEM customization for brand-focused buyers.

Innovative Hookless Carbon Design for Enhanced Performance

The 27.5 hookless carbon MTB rim incorporates a cutting-edge hookless rim design that significantly improves strength and reduces weight compared to traditional hooked rims. This design allows for better tire compatibility, enabling riders to run lower tire pressures without compromising durability. The carbon fiber construction ensures excellent responsiveness and stiffness, making it perfect for cross-country (XC) riders seeking speed and control on various terrains. Its hookless nature also simplifies tubeless tire setup, resulting in fewer flats and enhanced trail confidence.

Asymmetric Rim Profile for Balanced Strength and Stability

This 27.5 hookless carbon MTB rim features an asymmetric shape, which optimizes spoke tension on both sides of the wheel. This balance enhances wheel durability and reduces the likelihood of spoke breakage or rim deformation under stress. The 25mm internal width offers a wider tire footprint that improves traction and comfort while maintaining aerodynamic efficiency essential for XC riding. Together, these attributes provide riders with a reliable, responsive rim that performs well in demanding mountain bike conditions.

Lightweight Construction with 25mm Internal Width for Versatile XC Use

With a 25mm internal width, this 27.5 hookless carbon MTB rim strikes the perfect balance between lightweight agility and tire volume capacity. Weight savings from the carbon fiber design improve acceleration and climbing efficiency, while the rim width supports wider tires for enhanced grip and shock absorption. This rim is ideal for trail and cross-country cyclists who prioritize speed and stability without sacrificing durability. Its compatibility with a wide range of tires ensures versatility for diverse riding styles and trail challenges.