The Mavic Cosmic S 42 Disc Carbon wheels offer a high-performance blend of speed, control, and reliability, ideal for cyclists chasing performance across a variety of terrains. Featuring a lightweight, 100% carbon fiber rim with a 42mm profile, this wheelset is optimized for low inertia and instant acceleration. A 21mm internal rim width boosts tire volume, enhancing cornering grip, efficiency, and rider confidence—especially when descending or maneuvering at speed. The aerodynamic profile and wind-tunnel-tested flat spokes reduce drag and increase lateral stability, making the Cosmic S 42 Disc a versatile performer on flat, rolling, and mountainous roads.

Mavic’s UST Tubeless Ready system simplifies tire installation while improving comfort and efficiency through lower pressure compatibility. The wheel is disc-specific and built to withstand the braking forces of modern disc systems. With front and rear wheels sold separately, each weighs just 775g and 885g respectively, for a total system weight of 1660g—light enough for punchy climbs yet stiff enough for powerful sprints. The use of standard J-bend spokes ensures serviceability, while the hand-assembled construction in Europe reflects Mavic’s precision craftsmanship and attention to detail.

At the heart of the hub system lies Mavic’s proven Instant Drive 360 freewheel, offering fast engagement and compatibility with Shimano HG road drivetrains. Sealed QRM Auto cartridge bearings provide smooth rolling and long-term reliability without the need for manual adjustment. Combined with a durable aluminum hub body and Center Lock disc interface, the Cosmic S 42 Disc is engineered for years of reliable performance with minimal maintenance. Whether climbing alpine passes or hammering on fast descents, these wheels deliver the speed and control needed to elevate every ride.