Mavic Cosmic SL 32 C21 carbon bike wheels 2026

The Mavic Cosmic SL 32 C21 returns with a new version featuring a more modern design and the same high performance. Designed to fly up mountain passes, 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 double-butted flat spokes help to reduce weight and improve responsiveness.

With a 32 mm profile and an internal width of 21 mm, the Mavic Cosmic SL 32 C21 are lightweight and specially developed to offer you the best possible experience on climbs. 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 (mountain)
- Use: training, racing
- Material: 100% unidirectional carbon fibre
- Braking system: disc / Center Lock
- Tyre type: UST Tubeless Ready - Use with Mavic tubeless rim tape
- Rim profile height: 32 mm
- Internal rim width: 21 mm

Weight: 1,495 grams per pair (690 g for the front wheel / 805 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.