Mavic Crossmax SL Ultimate 30 Rear Wheel

At only 1380 g, 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 for fast acceleration and climbing without compromising stiffness and durability.

Adaptive layup, a specific carbon layup technology enabled Mavic 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 Mavic's new UD² construction for a distinctive look and added durability.

Extensive field testing with 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. Mavic's 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.

Features:

• Fly up climbs and accelerate faster
• New carbon Adaptive layup technology shaves 70 g per rim
• 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

Specifications:

• Weight: 760 g
• Rims:
  • Material: 100% carbon fiber with UD external layer
  • Height: 25 mm
  • Internal width: 30 mm
  • Drilling: 24H
  • Braking: disc
  • Profile: asymmetrical and hookless
  • ETRTO size: 622x30TSS
  • Tire: Tubetype or UST Tubeless Ready with Mavic Tubeless Tape
• Spokes:
  • Material: steel
  • Shape: straight, extra-flat, constricted, antirot
  • Nipples: aluminium, black
  • Lacing: crossed 2
• Hubs:
  • Body material: aluminium
  • Body design: INFINITY
  • Disc standard: 6 Bolts or Center Lock®
  • Axle material: aluminum
  • Freewheel technology: Instant Drive 360
  • Freewheel: Shimano MS / Sram XD MTB
  • Bearing technology: QRM automatic setting - sealed cartridge
• Minimum tyre size: width 52 mm - pressure max. 2.35 Bar/34 PSI
• Maximum tyre size: width 76 mm - pressure max. 1.9 5Bar/28 PSI
• ASTM category 3: cross country
• Maximum weight supported by the wheels: must not exceed 150 kg (bike weight included)