Mavic Crossmax SL Ultimate 25 29″ Boost Front Wheel Wheel 29″ Boost Front Wheel | Bike-Discount

Built for Olympic athletes, the new Crossmax SL Ultimate is the most dynamic XC wheelset ever created by Mavic. Lighter, stiffer, faster-it’s all about going for gold.

Lighter, stiffer and faster: with the Crossmax SL Ultimate 25 from Mavic

At only 605 grams, this is the wheel that performance-obsessed cross-country racers dream of. Developed with input from top pro racers seeking a competitive advantage at World Cups and Olympics, it features an ultralight full carbon 29” rim (360 g) for fast acceleration and climbing without compromising stiffness and durability.

Adaptive layup, a specific carbon layup technology enabled us to handcraft these carbon rims with less material between the spokes. The spoke holes are reinforced with strategically positioned carbon layering in a process that minimizes weight without compromising stiffness and strength. A lighter rim means faster acceleration, more efficient climbing, and a more responsive feel on the trail. The external carbon layer features our new UD² construction for a distinctive look and added durability.

Extensive field testing with the pro athletes determined that a 25 mm inner width was ideal for a quick, precise ride quality and optimized tire grip on fast racetracks. For more technical trails, some preferred a 30 mm width for added control, so Mavic created two options. It’s your choice, and you can mix the two if you want. You could choose the Crossmax Ultimate 25 for the rear to boost acceleration and efficiency, and the Crossmax Ultimate 30 for the front to add confidence and control on rugged single-track.

The carbon rim is laced with 24 straight-pull double butted spokes (same spoke length throughout), two-crossed for maximum power transfer and enhanced vertical compliance. The new lighter Infinity hub design optimizes lateral stiffness, and the spoke lacing maximizes power transfer. Our Instant Drive 360 freewheel with a double ratchet system provides fast engagement and high stiffness to help you accelerate out of corners faster. The rear hub is compatible with Shimano HG9, Micro Spline and SRAM XD driver bodies.

The Crossmax SL Ultimate 30 is available with 6-bolt or center lock brake rotors in 29” only and is compatible with a 15×110 front axle and 12×148 rear.

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Features – Mavic Crossmax SL Ultimate 25

• Fly up climbs and accelerate faster New carbon Adaptive layup technology shaves 70 g per rim. 25 mm wide rim weighs only 340 g
• Stiff and smooth ride quality Special carbon rim layup for superior rim stiffness and added control on descent. Double-butted, two-cross spoke pattern for enhanced vertical compliance
• Efficient power transfer New lighter Infinity hub design paired with 24 straight-pull spokes for improved stiffness and better balanced spoke tension

Product features

• Use: MTB / Cross-country
  
• Model: Crossmax SL Ultimate 25
• Wheel size: 29″
• Rim diameter: 622
• Rim type: Clincher
• Tubeless ready: Yes
• Axle system: 15 mm Thru Axle
• Built-in dimension: 110 mm Boost
• Bearings: Auto adjust sealed cartridge bearings (QRM Auto)
• Outer width: 30 mm
• Valve hole: Presta / SV Ø 6.5 mm
• Spoke type: straight pull, flat, double butted
• Spokes: 24 (2-cross)
• Recommended tyre sizes: 50 mm to 76 mm (2.00″ to 3.00″)
• ASTM Classification: 3 Cross-country
• Recommended system weight max: 150 kg (Rider + Bike + Equipment)

Brake interface (choose variant)

• Disc 6-bolt
• Disc Centerlock

Material

• Rim: Carbon
• Hub: Aluminum
• Spoke: Steel
• Nipples: Aluminium

Color

• black

Weight (manufacturer information)

• 605 g

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Scope of delivery

• 1 x Mavic Crossmax SL Ultimate 25 29″ Boost Front wheel
• 1 x UST valve and accessories
• 1 x Tubeless rim tape
• 2 x Replacement spoke

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Technologies

Adaptive Layup Carbon technology
Lighter carbon rim construction for faster acceleration and more efficient climbing.The Ultimate CrossCountry racing application : light and responsive.

QRM Auto bearing preload technology
Qualité de Roulements Mavic Auto Our latest innovation. Those cartridge bearings are of course double sealed with C3 internal clearance. Their preload is automatically adjusted to guarantee a perfect spin with no play on the long run.