News

The classification system for bicycle wheels is defined by ASTM International under the ASTM F2043 standard. This framework categorizes bicycle use cases into performance levels based on riding terrain, impact severity, and intended application.

Spokes are critical structural elements in a wheel system, functioning as tensile members that transfer load between the hub and rim. Their specifications directly influence wheel strength, stiffness, weight, and long-term durability. In many high-performance wheel builds, spoke cost and engineering complexity can rival—or even exceed—that of rims and hubs.

The pursuit of marginal gains in road and gravel cycling has driven an increasing number of low-spoke count wheel designs in the market. But what are the real benefits and challenges of reducing spoke numbers?

Discover how asymmetric carbon rims improve spoke tension balance, enhance wheel durability, and extend component life. Learn why this design is becoming essential in MTB, gravel, and road OEM projects.

At NTP Composites, we do more than manufacture carbon rims—we also build complete wheelsets for brands around the world. When selecting a hub, factors such as engagement, weight, and appearance often receive the most attention. However, one critical component is frequently overlooked: the bearing.

This year marks the 20th edition of Unbound Gravel, the world's premier gravel race. From its humble start in 2006 with just 34 participants, Unbound now attracts nearly 5,000 riders—from amateur enthusiasts to elite professionals—competing self-supported across Kansas' undulating terrain, with race distances ranging from 25 to 350 miles.

Carbon fiber spokes have quickly become one of the most widely adopted innovations in road cycling wheels. Their use has now expanded beyond road bikes to gravel and cross-country applications. Like any emerging technology, carbon spokes underwent a period of experimentation before reaching the level of standardization we see today.

At NTP Composites, we believe premium product quality comes down to attention to detail. In this article, we take a closer look at one small but important feature on carbon rims: drain holes — why they are necessary and how they can be customized for your wheel project.