Mavic Cosmic SL 45 Disc rear wheel 2025

With its widened 23mm UD carbon rim, the Cosmic SL 45 is the most versatile of Mavic's carbon wheels, with improved comfort and performance

Less drag, more watts thanks to its 45mm rim profile and flat spokes developed by our aero experts and wind tunnel tested, with INFINITY hubs, power transfer is ultra-efficient and the wheel is even more responsive. The lightness of its 23mm rim and its spoking make the Cosmic SL 45 Disc the most versatile Mavic road wheel ever designed.

Features

• Improved aerodynamics
• Even more responsive
• Unrivalled versatility

Tech Specs

Rims

• Material: 100% Unidirectional carbon fiber
• Height: 45 mm
• Internal width: 23 mm
• Drilling: traditional (front/rear 24 holes)
• Braking: disc
• ETRTO size: 622x23TC
• Tire: UST Tubeless Ready - Use with Mavic Tubeless Tape
• Real weight: 873 g (rear wheel)

Spokes

• Material: steel
• Shape: straight, extra-flat, constricted, antirot (rear)
• Nipples: steel, ABS, black
• Lacing: crossed 2 (rear)

Hubs

• Body material: aluminium
• Body design: INFINITY
• Disc standard: Center Lock® only
• Axle material: aluminum
• Axle size: rear 12x142 - Convertible to quick release with adapters (not included)
• Freewheel: Shimano HG road
• Bearing technology: QRM automatic setting - sealed cartridge

Included

• User guide
• Rim tape mounted on wheel
• UST valve not mounted on wheel
• Multifonction adjustment wrench with the rear wheel

Intended use

• Minimum tyre size: width 28mm - pressure max. 5.5Bar/80PSI
• Maximum tyre size: width 64mm - pressure max. 3.25Bar/47PSI
• 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)

Technologies

Instant Drive 360 freewheel system
The new Instant Drive 360 freewheel system is ultralight and efficient. An oversized non-contact rubber seal minimizes friction, and a wide selection of adapters makes it compatible with a wide range of frames and axles.

Tubeless UST Technology.
Traction and Control. Universal Tubeless Standard. Ride-ready tubeless system. The UST system improves traction, control and comfort while reducing inertia and the risk of punctures.

Infinity Hubs
Efficient power transfer through optimized non-contact spoke lacing (no noise under load) and tension distribution. Front and rear spoke lengths are identical. Easy maintenance due to tool-free solution.

QRM Auto bearing adjustment technology
Quality Mavic Auto bearings. These cartridge bearings are obviously double sealed, with C3 internal clearance. The system,a automatically adjusts to ensure, in the long run, perfect rotation without backlash.