Crossmax SL Ultimate 25 Boost 29in Wheel

What Our Gearhead® Experts Are Saying:

"These are the fastest XC wheels I’ve ever ridden. The combination of the light carbon layup, Infinity hubs, and ID360 engagement makes them feel like they jump forward with every pedal stroke. They stay true through race abuse, set up tubeless easily, and give that connected, responsive feel that only top-tier carbon wheels deliver."

The Mavic Crossmax SL Ultimate 25 29 front and rear wheels bring World Cup race performance to competitive cross-country riders chasing every possible edge. At just 1340g per pair, they combine Adaptive Layup carbon technology with Mavic’s latest Infinity hub platform to deliver the perfect balance of stiffness, weight, and reliability. Each rim’s 25mm internal width provides ideal support for fast-rolling XC tires while maintaining low rotational mass for lightning-quick acceleration.

Mavic’s handcrafted Adaptive Layup design strategically reinforces spoke beds with carbon layering while reducing material between spokes, optimizing the stiffness-to-weight ratio. The double-butted, two-cross spoke pattern and Infinity hubs ensure perfectly balanced spoke tension for precision tracking through rough terrain. At the rear, the Instant Drive 360 freehub offers near-instant engagement for explosive acceleration out of corners, while the sealed system minimizes friction and service needs.

Engineered for 15x110mm front and 12x148mm rear Boost spacing with 6-bolt rotor mounts, the Crossmax SL Ultimate 25 wheels deliver the responsive handling, efficient power transfer, and climbing prowess demanded by today’s XC racers. They’re the perfect match for riders who want uncompromising performance from the start line to the final climb.