COSMIC ULTIMATE IV

The Cosmic Ultimate IV shoes are designed for riders who want to feel every watt being transferred through the drivetrain.
The Matryx® upper, made from Kevlar and polyamide fibres, has very low stretch to minimise energy loss, whilst remaining breathable.

The Matryx® weave incorporates ventilation zones and reduces the use of adhesive.

The BOA® Fit System with Li2 dials allows separate adjustment of the tightening zones, with micro-adjustment in both directions.

Underfoot, the full-carbon sole features a new rigid design and incorporates openings to ventilate the forefoot.

Weighing 245g, the Cosmic Ultimate IV shoes are designed for racing, warm-weather runs and long-distance efforts.

Main features

Matryx® Kevlar/Polyamide, full carbon sole, BOA® Li2: direct power transfer

Matryx® Kevlar and polyamide fibres offer the lowest stretch to transmit energy without loss.
The full-carbon sole features a rigid design.
The BOA® Li2 dials allow for precise tightening with micro-adjustment in both directions, useful when the intensity of the effort changes.

Ventilated Matryx® jacquard, reduced use of adhesive, underfoot vents: coolness in hot conditions

The Matryx® Jacquard places ventilation openings on the upper, where heat builds up.
Reduced adhesive minimises air barriers. Underfoot, the openings integrated into the carbon sole promote continuous airflow to the forefoot.

245 g, Matryx® upper, low-density carbon: reduced inertia

The Matryx® weave and low-density carbon sole aim to keep weight down without compromising support. At 245 g, the Cosmic Ultimate IV remains responsive on the attack and more comfortable on longer rides.

Specifications

  • Weight (8,5UK) per shoe : 245 g

Cyclists' opinions

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KenAdvanced (+3 rides per week)
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6/28/26
“Just received them. Build quality looks great. Fit is spot on! The 44 2/3 fits my USA size 10.5 foot same as my 10.5 Nike or Hoka shoe. These replaced my old pair of Mavic Zxellium Pro shoes that I used for hot summer riding on the USA east coast (Ultimate 4 fit even better). The only thing I am concerned about is that though there are massive mesh openings in the carbon sole for air, the insole is thick and has no ventilation holes to carry the air through to the foot. Also the insole has no arch support, nor arch adjustments like my Shimano Phyre 903's do. Insoles are correctable, but a disappointment as this price level. I will update later after some rides.”
Ma
Answer from the team
“Hello Ken Thank you for your feedback and comments. We will pass your feedback on to our product manager and get back to you shortly. Enjoy your shoes. See you soon The Mavic Team”

Mavic Cosmic Ultimate IV road cycling shoes