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Crossmax SL Ultimate 30 29in Boost Wheelset

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Why We Like The Mavic Crossmax SL Ultimate 30 29in Boost Wheelset

The Mavic Crossmax SL Ultimate 30 29in Boost Wheelset is a premium carbon fiber wheelset with a wider, 30mm internal diameter for more aggressive XC courses and trail riding. The Crossmax SL Ultimate 30 features Mavic's Adaptive carbon layup technology to eliminate excess weight without compromising stiffness or durability. Material elimination on the rim paired with revised spoke holes and external carbon layering for added durability makes for a balanced carbon rim that is light and durable, tipping the scales at just over three pounds for the wheelset. The Infinity hub is lighter and stiffer thanks to the revised 24-hole spoke pattern, and the Instant Drive 360 freewheel gives us a double ratchet system for reliability and fast engagement on the trails. The 30mm inner diameter offers better stability and traction in rougher terrain, while the tubeless-ready setup and the ability to run up to 2.5-inch-wide tires give us the grip and traction we need for aggressive cross-country riding and racing.


  • Premium carbon fiber wheelset for aggressive cross-country or trail riding
  • Infinity hub is light and stiffer than ever
  • 30mm internal diameter for more stability, traction, and bigger tires
  • Instant drive 360 freewheel uses a dual ratchet system for fast engagement
  • Lightweight at just over 3 pounds for the wheelset
  • Item #MAVZ28X
Rim Material
carbon fiber
Wheel Size
Rim Type
Rim Depth
Rim Width
[internal] 30mm
Brake Compatibility
6-bolt, centerlock
Front Axle
15 x 110mm Boost
Rear Axle
12 x 148mm
steel, straight-pull
Spoke Nipple
Spoke Count
Max Rider Weight
[rider and bike] 330lb
Wheel Bag Included
Claimed Weight
[set] 3lb 1.2oz (1395g)
user guide, wheel cover, rim tape, UST valve, 4 replacement spokes, multifunction adjustment wrench
Manufacturer Warranty

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