Mavic Cosmic SL 45 C23 carbon bike wheels 2026

Heavily inspired by the previous version, these Mavic Cosmic SL 45 C23 wheels feature a new, more modern design whilst retaining all the same qualities. Designed for fast riding on the flat and over bumps for sprinters, these wheels offer greater lateral stiffness for improved power transfer. UST Road technology offers greater speed, comfort and control thanks to an easier-to-use tubeless system. Inspired by NACA profiles following wind tunnel testing, the rim shape is designed to minimise aerodynamic drag. The flat, double-butted spokes help to reduce weight and improve responsiveness.

With a 45 mm profile and an internal width of 23 mm, the Mavic Cosmic SL 45 C23 are lightweight and specially developed to offer you the best possible experience. These wheels are responsive thanks to the Infinity hubs, which ensure ultra-efficient power transfer. Lightweight and efficient, the Instant Drive 360 freehub system reduces friction to a minimum, whilst the QRM bearings offer excellent smoothness.

Technical specifications:

- Discipline: road (hills, flat)
- Use: training, racing
- Material: 100% unidirectional carbon fibre
- Braking system: disc / Center Lock
- Tyre type: UST Tubeless Ready - Use with Mavic tubeless rim tape
- Profile height: 45 mm
- Internal rim width: 23 mm

Weight: 1,575 grams per pair (730 g for the front wheel / 845 g for the rear wheel)

Hubs:
- Rear axle: 12x142
- Front axle: 12x100
- Hubs: Infinity aluminium
- Bearings: QRM self-adjusting - sealed cartridge
- Freewheel system: Shimano HG road, Sram XD, Campagnolo N3W

Spokes:
- Spokes: steel, flat, 2-cross (front and rear)
- Nipples: steel, ABS, black / straight, extra-flat, tapered, anti-rotation (front and rear)

Usage guidelines:
- Max. system weight: 120 kg (including bike weight)

Accessories included: User guide, UST rim tape fitted to the wheel, UST valve not fitted to the wheel.