The End of Skinny XC Rims? Reserve’s New 30|XC Changes the Game

Cross-country racing isn’t what it used to be. As World Cup courses get steeper, more technical, and frankly, a lot more fun to watch, the gear has to evolve, and it has. Tires are wider, suspension travel is longer, and droppers are a non-negotiable. And now, wheels are getting wider to accommodate the trends. Reserve Wheels is leaning into this evolution with the launch of the new 30|XC, a wheelset designed to take the lessons learned from their World Cup-winning 28|XC and push them into the modern era.

Wider and Tougher

As the name would suggest, the 30 XC jumps to a 30mm internal rim width. With XC racers now regularly reaching for 2.35" to 2.5" rubber, that extra volume is essential for better cornering support and better traction when things get greasy, and a wider rim lets these wider tires sit at their natural state without ballooning.

But it’s not just about width; modern XC wheels need to be stronger. Reserve has increased the spoke count from 24 to 28. While that might sound like a weight penalty, Reserve claims the new rim design actually delivers improved strength and durability at a lower weight than its predecessor, and the 30|XC SL has a mighty sleek claimed weight of just 1304g thanks to some pretty high-tech weight savings.

Carbon Spokes and Weight Weenie Dreams

For those counting every gram, the 30 XC SL is the factory-spec heavy hitter. This is the exact setup you’ll see under the Cannondale Factory Racing team riders like Charlie Aldridge and Jolanda Neff, on the UCI World Cup circuit this year.

The SL version utilizes a special high-modulus carbon layup to shave 30g off each rim while maintaining the same ride quality as the 28|XC. The real magic, however, is in the Vonoa carbon spokes. These are 30% lighter than traditional steel and, according to team riders, offer a "planted" and responsive feel that minimizes spoke wind-up during hard accelerations.

Modern Hub Tech

Reserve is also using the DT Swiss Degree of Freedom system. On the standard 30 XC, you’ll find DT 350 hubs equipped with the Deg 90 system, featuring ratchets in the 0° position for high engagement and snappy acceleration. This system is designed to improve suspension performance by reducing pedal kickback with the tunable deadband. Which might be a welcome addition if your XC bike does a little double-duty as a trail bike.

The SL model pairs the featherweight rims and carbon spokes with the gold standard DT Swiss 180s, because, let's be honest, no one who is counting grams like that would really want to mess with pedal kickback tuning. 

Specs and Pricing

Whether you're looking for a workhorse race wheel or a sub-1400g climbing weapon, here is how the lineup shakes out:

Learn more at Reservewheels.com