Mavic Cosmic SL 45 Disc Wheelset

Introducing the Mavic Cosmic SL 45 Disc Wheelset, a high-performance carbon wheel designed for road cyclists craving aerodynamic speed, climbing agility, and tubeless-ready versatility.

Featuring 45 mm deep unidirectional carbon rims with a widened 23 mm internal width, these wheels provide improved comfort, tire volume, and wind-tunnel tuned efficiency. Built around Mavic’s enhanced Infinity hub platform with Instant Drive 360 engagement and QRM Auto-sealed bearings, they deliver responsive acceleration, reliable performance, and low maintenance convenience.

Specs at a Glance

• Material & Profile: 100% unidirectional carbon, 45 mm depth × 23 mm internal width
• Weight: Approx. 1,575 g per set (Front ~730 g, Rear ~845 g)
• Spokes: 24 front / 24 rear, straight, extra-flat steel, 2-cross lacing
• Hubs & Bearings: Aluminum Infinity hubs; Instant Drive 360 freehub; QRM Auto sealed cartridge bearings
• Brake Interface: Centerlock disc only
• Axle Compatibility: 12 × 100 front and 12 × 142 rear thru-axles; quick-release convertible via adapters
• Tire Width Range: Recommended 28–32 mm; up to 64 mm supported
• Max System Load: ≈ 120 kg (bike + rider)

Design Benefits

1. Aero-Optimized Performance: The NACA-inspired 45 mm rim profile and aero-flat spokes reduce drag for increased efficiency.
2. Light Yet Comfortable: The 23 mm internal width balances responsiveness with improved comfort and enhanced tire volume.
3. Ready-to-Ride Tubeless Setup: UST system simplifies sealing, lowers rolling resistance, and reduces puncture risk.
4. Responsive and Low-Maintenance Hub System: Instant Drive 360 ensures quick engagement; QRM Auto bearings self-adjust for durability and smooth rotation.
5. All-Road Versatility: Disc-only design with thru-axle compatibility and broad tire support makes this wheelset ideal for varied road and mixed-terrain use.

Final Take

The Mavic Cosmic SL 45 Disc Wheelset delivers a well-balanced blend of aerodynamic speed, lightweight construction, and tubeless-ready convenience. Designed for serious riders who demand climb responsiveness, high-speed stability, and a refined feel—all in a versatile, performance-oriented package.