Mavic Cosmic S 42 Disc Wheelset

Introducing the Mavic Cosmic S 42 Disc Wheelset, a lightweight carbon performance upgrade crafted for ambitious road cyclists craving aerodynamic speed, low inertia, and exceptional control across varied terrain.

Featuring 100% carbon fiber, 42 mm-deep clincher rims, and a 21 mm internal width, these wheels maximize tire volume for enhanced confidence, efficiency, and superior cornering. Designed with Mavic’s UST tubeless-ready system and wind-tunnel-tested flat spokes, they deliver smooth rolling, superb aero stability, and steadfast control at high speeds.

Specs at a Glance

• Rim: 100% carbon, 42 mm depth × 21 mm internal width
• Tubeless: UST tubeless-ready clincher
• Spokes: 24 front / 24 rear wind-tunnel flat steel spokes
• Hubs & Freehub: Aluminum Infinity hub with Instant Drive 360; QRM Auto-sealed bearings
• Brake Compatibility: Centerlock disc-only
• Axle: 12×100 front / 12×142 rear thru-axles (QR adapters available)
• Weight: Approx. 775 g front / 885 g rear; pair ~1,660 g
• Tires: Optimized for 25–32 mm road clinchers
• Load Capacity: Up to ~120 kg total (rider + bike)

Design Benefits

1. Effortless Acceleration: Lightweight carbon rim cuts inertia for snappy response and climb-ready performance.
2. Stable Handling: Wind-tunnel-designed flat spokes and deep rim profile deliver lateral stiffness and high-speed stability.
3. Broader Confidence Zone: 21 mm internal width boosts tire volume—improving grip, smoothing uneven roads, and enhancing cornering.
4. Smart Tubeless Simplicity: UST design streamlines setup, supports lower pressures, and enhances ride comfort.
5. Maintenance Made Easy: Instant Drive 360 and QRM Auto systems ensure crisp freehub engagement and minimal upkeep over time.
6. Built to Last: European hand-assembly and service-friendly parts make these wheels a lasting investment.

Final Take

The Mavic Cosmic S 42 Disc Wheelset strikes an excellent balance between aerodynamic efficiency, lightweight responsiveness, and enduring performance. It’s the perfect choice for riders ready to push harder and climb further—without compromise.