Mavic COSMIC S 42 Disc Wheels

Mavic Cosmic S 42 Carbon Disc Wheels

The Mavic Cosmic S 42 Disc Wheelset delivers the perfect balance of aerodynamics, climbing efficiency, and everyday reliability. Built around lightweight full carbon rims with a versatile 42mm profile, the Cosmic S 42 accelerates effortlessly, maintains speed with ease, and inspires confidence on everything from rolling roads to long alpine climbs.

Featuring Mavic's renowned UST Tubeless Ready technology, reliable ID360 freehub system, and hand-built European craftsmanship, this premium carbon wheelset is designed for riders who demand performance without compromise.

Key Features

• Lightweight full carbon road wheelset
• 42mm aerodynamic rim depth
• 21mm internal rim width
• UST Tubeless Ready compatibility
• Center Lock disc brake compatible
• Instant Drive 360 freehub system
• QRM sealed cartridge bearings
• Lightweight aluminium hubs
• Hand-built in Europe
• Shimano HG road freehub
• Standard J-bend steel spokes
• Front axle: 12x100mm
• Rear axle: 12x142mm
• Total wheelset weight: 1660g

Lightweight Carbon Performance

Constructed from 100% carbon fibre, the Cosmic S 42 offers impressive responsiveness with low rotational weight, allowing faster acceleration, easier climbing, and efficient power transfer on every ride.

Aerodynamic 42mm Rim Profile

The versatile 42mm rim depth has been refined through wind tunnel testing to deliver an excellent balance of aerodynamic efficiency and crosswind stability. Whether you're riding fast on the flats or climbing mountain passes, the Cosmic S 42 remains composed and confidence inspiring.

Optimised for Modern Road Tyres

A generous 21mm internal rim width provides excellent support for modern road tyres, increasing tyre volume for improved comfort, grip, rolling efficiency, and cornering confidence across varied road surfaces.

UST Tubeless Ready Technology

Mavic's UST Tubeless Ready system simplifies tubeless installation while reducing rolling resistance, improving puncture protection, and allowing lower tyre pressures for increased comfort and control.

Reliable ID360 Hub System

At the centre of the wheelset is Mavic's proven Instant Drive 360 freehub, delivering rapid engagement, smooth power transfer, and exceptional long-term reliability with minimal maintenance requirements.

Built for Long-Term Durability

High-quality sealed cartridge bearings with QRM automatic preload technology ensure consistently smooth rolling performance while reducing maintenance over thousands of kilometres.

Easy to Service

Standard J-bend steel spokes make servicing and replacement straightforward, while the hand-built construction reflects Mavic's commitment to precision and long-term reliability.

Wide Compatibility

The Cosmic S 42 is supplied with a Shimano HG road freehub and is compatible with modern 12x100mm front and 12x142mm rear thru-axle road bikes.

Optional freehub conversions are available for:

• SRAM XDR Road
• Shimano Micro Spline
• Campagnolo ED
• Campagnolo N3W

Optional axle adapters allow compatibility with selected quick-release and alternative axle standards.

Built for Every Ride

Whether you're chasing personal bests, tackling mountain climbs, riding gran fondos, or simply upgrading your road bike, the Mavic Cosmic S 42 Disc Wheelset delivers the speed, confidence, and reliability serious cyclists expect from one of cycling's most respected wheel manufacturers.

Specification