Review: Mavic Cosmic Carbone 40C Carbon Clinchers


You can’t deny that these are seriously slick looking wheels.

Bottom Line

The answer to the question, should you buy these wheels has a lot to do with what you are looking for in a set of wheels. Obviously they are not cheap, but anyone shopping for carbon clinchers has likely already gotten past that hurdle. They are also not super light, but again carbon clinchers are not meant to compete with wispy climbing hoops. And finally they are not exceptionally aero compared to some of the competition, but this was not Mavic’s primary aim with these wheels.

What the new Mavic Cosmic Carbone 40C does deliver is reliable braking performance and claimed long-term durability. And that’s something that should not be understated. When you fully trust that a wheel is going to perform exactly the way you want it to, you’ll be more willing to dive hard into corners and open up the throttle on long downhill descents. That equals increased speed, which is what we’re all chasing at the end of the day.


  • Reliable and predicable braking
  • Stiffness during hard efforts
  • No tubular tire gluing required
  • Alloy rim bed insert increases strength
  • No rim tape required
  • Attractive aesthetics
  • Ease of spoke servicing
  • Low inertia weight


  • Narrow rim profile
  • Shallower rim depth than core competitors
  • Middle-of-road overall weight
  • Braking noise
  • Price

Overall Rating: 3.5 out of 5

Complete Specs:

  • Price: $2750 including wheel bags, tires, tubes, brake pads, tools, QRs
  • 1545 grams per pair (670g front/875g rear)
  • No added weight from rim tape
  • 2085 grams for complete wheel-tire System
  • 40mm deep profile carbon rim with 19mm outside width
  • Carbon hub shells with aerodynamic aluminum flanges
  • QRM+ adjustable preload bearings and aluminum axles
  • Bladed/butted stainless steel spokes with external, integrated alloy nipples
  • 16 radially laced spokes in front; 20 laced radially non-drive/1-cross drive
  • Wheel-tire system with 190-gram, dual compound 120TPI Mavic GripLink front tire and Mavic PowerLink rear tire


About the author: Jason Sumner

An avid cyclist, Jason Sumner has been writing about two-wheeled pursuits of all kinds since 1999. He’s covered the Tour de France, the Olympic Games, and dozens of other international cycling events. He also likes to throw himself into the fray, penning first-person accounts of cycling adventures all over the globe. Sumner, who joined the / staff in 2013, has also done extensive gear testing and is the author of the cycling guide book "75 Classic Rides: Colorado." When not writing or riding, the native Coloradoan can be found enjoying time with his wife Lisa and daughter Cora.

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  • Sandro says:

    Jason Sumner
    The Mavic Cosmic 40C is faster inertia in climb?

  • gkuch says:

    Love your photo from Mars Hill!

  • Bryan girton says:

    No catastrophic failures in four rides? I guess that would be a priority for any wheel manufacturer. $2700 for a wheelset that’s not super light or super aero and squawks when hitting the brakes? I don’t understand the aero wheel crowd, and especially how they would pay that kind of $$$ for little if any benefit over a good set of aluminums. I’ll stick with my “old skool” kysrium sl’s (tubeless) thank you, they’ve been a great wheel at a reasonable price.

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