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Unbeatable pro-level ride quality and stability.

40mm deep/25mm wide rims integrate perfectly with 25mm or wider tires
NACA profile provides unbeatable crosswind stability

Climb, sprint and accelerate faster

Rims, spokes and hubs feature a full carbon monobloc construction for minimum weight and maximum rigidity
Incredibly light at only 1220g

Stiffest wheel in its class for sharp handling and maximum power transfer

R2R full carbon spoke technology
Asymmetrical rear rim profile for maximum power transfer
ID360 freewheel technology provides a fast pedaling engagement
The Cosmic Ultimate tubular was created 10 years ago and quickly became the wheel choice for pro racers seeking a competitive advantage. This rim-brake version sees a major redesign with a full carbon rear hub, full carbon lacing and ID360 freewheel technology for improved responsiveness.

The rim is engineered with a NACA-inspired, full-carbon profile that’s 40mm deep and 25mm wide. It’s made from 12k carbon fibers wrapped over a super rigid foam core. Full-carbon construction means the whole wheel is incredibly light at just 1200g. The 20 super-bladed carbon fiber spokes and high, thin carbon hub flanges offer a proven aero advantage. The spokes are made with unidirectional carbon fibers, so they don’t stretch. The spokes run continuously from one edge of the rim to the other, through the hubs (R2R technology), creating one single spoke instead of two. This adds wheel stiffness and eliminates the need to mechanically attach the spokes to the hub.

The rear rim is asymmetrical to improve its drive-side bracing angle, so spoke tension is balanced and the wheel remains stiff under the heaviest lateral loads such as sprints or attacks. Our unique iTgMax technology delivers reliable and consistent braking performance in both wet and dry conditions. It’s no surprise that Cosmic Ultimate T is the pro’s choice for the most challenging World Tour races. These wheels are designed, engineered and patented by Mavic in Annecy, France, and are 100% handmade in our European carbon factory.


  • Material: 3K carbon fibers
  • Height: 40 mm
  • Drilling: no holes, spokes molded to the rim
  • Valve hole diameter: 65 mm
  • Tire: tubular
  • ETRTO size: 28 tubular
  • iTgMAX carbon clincher technology for rim brake


  • Material: unidirectional carbon fiber
  • Count: 20 front and rear
  • Lacing: front and rear crossed 2
  • R2R carbon spoke technology


  • Front hub body: Carbon
  • Rear body: aluminum
  • Front and rear bodies: Carbon
  • Axle material: aluminum
  • Front bearings : adjustable sealed cartridge bearings (QRM+), Rear bearings : auto adjust sealed cartridge bearings (QRM Auto)
  • Instant Drive 360 freewheel technology
  • QRM+ bearing preload technology
  • QRM Auto bearing preload technology


  • Color: Black only


  • Freewheel: Shimano/Sram, convertible to Campagnolo ED11, N3W and XD-R with optional driver bodies
  • Front axle: Quick Release only
  • Rear axle: Quick Release only

Compatible Adapters and freewheel bodies

  • ID360 Shimano / Sram Light freewheel body (V3850101)
  • ID360 XD-R freewheel body (V2580101)
  • ID360 Shimano / Sram freewheel body (V3430101 - Delivered on the wheel)

Delivered with

  • BR601 Titanium quick releases
  • Carbon brake pads
  • Computer magnet (99624501)
  • Multifonction adjustment wrench (delivered with rear wheel)
  • User guide

Intended use

  • ASTM CATEGORY 1 : road only
  • For a longer longevity of the wheel, Mavic recommends that the total weight supported by the wheels doesn't exceed 120kg, bike included
  • Recommended tire sizes: 23 to 32 mm
  • Max Pressure: see indication on wheel and tire If they differ, use the lowest of the 2
R2R carbon spoke technology

R2R carbon spoke technology

Lighter, stiffer, stronger Rim to Rim R2R spokes travelling from one side of the rim to the other through the hub
iTgMAX carbon clincher technology for rim brake

iTgMAX carbon clincher technology for rim brake

Integral Glass Transition Temperature iTgMAX consists in an inner rim bed finished with multiple layers of seamless carbon fiber to achieve a unique one-piece rim contour without cutting any fibers The brake track is then finished with a laser machining to ensure the best braking efficiency