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Welcome to a new dimension in cycling. The Cosmic S 42 Disc wheel, with its ultralight all-carbon rim, delivers instant acceleration and improved control.

Thanks to a 21mm internal width, this wheel maximizes tire volume, increasing confidence, improving efficiency and optimizing cornering performance.

A profile height of 42mm and wind-tunnel-tested flat spokes maximize the Cosmic S 42 Disc’s aerodynamics and give it lateral stability at high speeds. Cyclists looking for versatility on undulating or mountain roads will find what they're looking for. Low weight guarantees excellent capabilities on the toughest slopes, so you can tackle the Alpe d'Huez like it’s a hill. Mavic’s UST Tubeless Ready technology simplifies tire installation, offering improved comfort and efficiency.

High-quality spokes, durable bearings and our ID360 freewheel technology guarantee exceptional strength and longevity. Hand-assembled in Europe, the Cosmic S 42 Disc is the result of Mavic’s extensive experience in manufacturing high-quality wheels.

The Cosmic S 42 Disc’s exceptional dynamics and remarkable fluidity provide versatility for cyclists seeking optimal performance in all conditions. With its reliability and ease of maintenance, it's a long-lasting investment that’s ready for any challenge. Don't look too long for the ideal wheel: The Cosmic S 42 Disc is here to bring the level of performance to your ride.

Main features

Dynamic and easy to ride

Lightweight full carbon rim brings low inertia for instant acceleration and improved control
21mm internal width maximises tyre volume for improved confidence, efficiency and cornering grip
Disc specific wheel design perfectly handles the disc brake constraints

All terrain versatility

42mm rim profile and flat spokes are wind tunnel proven for low wind resistance and high lateral stability at high speed
Low overal weight means excellent climbing abilities
Mavic UST tubeless ready improves comfort, efficiency and tyre installation

Reliable and easy to service

High quality hubs thanks to long lasting bearings and the proven reliability of our ID360 freewheel technology
Standard J-Bent spokes for easy service
Hand-assembled in Europe


  • Weight Pair : 1660 g
  • Weight Front : 775 g
  • Weight Rear : 885 g
  • Material: 100% carbon fiber
  • Height: 42 mm
  • Internal width: 21 mm
  • Drilling: traditional (front/rear 24 holes)
  • Braking: disc
  • ETRTO size: 622x21TC
  • Tire: UST Tubeless Ready - Use with Mavic Tubeless Tape
  • Material: steel
  • Shape: bent radius, round (front and rear)
  • Nipples: steel, ABS, black
  • Lacing: crossed 2 (front and rear) 
  • Body material: aluminium
  • Body design:CLASSIC
  • Disc standard: Center Lock® only
  • Axle material: aluminum
  • Axle size: front 12x100 / rear 12x142 - Convertible to quick release with adapters (not included)
  • Freewheel technology: Instant Drive 360
  • Freewheel: Shimano HG road
  • Bearing technology: QRM automatic setting - sealed cartridge
  • Freewheel body: convertible SRAM XD road (kit V2580101 sold separately)
  • Freewheel body: convertible SHIMANO HG light road (kit V3850101 sold separately)
  • Freewheel body: convertible SHIMANO MS (kit V3990101 sold separately)
  • Freewheel body: convertible CAMPAGNOLO ED (kit V3440101 sold separately)
  • Freewheel body: convertible CAMPAGNOLO N3W (kit V4270101 sold separately)
  • Front axle adapters: 12x100 convertible to 9x100 (kit V2680301 sold separately)
  • Rear axle adapters: 12x142 convertible to 9x135 (kit V2510801 sold separately)
  • Rear axle adapters: 12x142 convertible to 12x135 (kit V2510901 sold separately)
  • User guide
  • Rim tape mounted on wheel
  • UST valve not mounted on wheel
  • ASTM category 2 : road and offroad with jumps less than 15cm
  • Maximum weight supported by the wheels: must not exceed 120 kg (bike weight included)

Key technology

Efficiency RigidityInstant Drive 360 freewheel technology
The new Instant Drive 360 freewheel system is super light and efficient. A large contactless rubber seal provides low friction, while a wide array of end caps makes it super versatile.
Efficiency RigidityUST tubeless technology
Traction and control. Universal Standard for Tubeless. Ready to ride tubeless system. The UST concept improves traction, control and comfort whilst reducing inertia and flats.
Safety ReliabilityInfinity hub design
Efficient power transfer thanks to optimised non-contact spoke lacing (no noise under load) and tension distribution. The length of the spokes at the front and rear is identical. Maintenance is easy thanks to a tool-free solution.
Safety ReliabilityQRM Auto bearing preload technology
Qualité de Roulements Mavic Auto. Those cartridge bearings are of course double sealed with C3 internal clearance. Their preload is automatically adjusted to guarantee a perfect spin with no play on the long run.

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