Carbon wheels at this price point used to mean compromises somewhere. The Mavic Cosmic SL 32 Disc is the exception.
Light enough to make climbs feel genuinely easier, stiff enough that your power actually goes somewhere, and tubeless-ready out of the box, these sit in a sweet spot that's hard to argue with.
The Mavic Cosmic SL 32 Disc wheels share the same 100% unidirectional carbon fibre rim as Mavic's pro-level SLR 32, so you're getting race-derived construction without the SLR price tag.
At 1,495g for the pair, they're light enough to make a noticeable difference on the climbs and during acceleration. The 32mm profile keeps aerodynamics in play on flatter roads, while the 21mm inner width gives modern tyre profiles the support they need to perform properly.
The UST tubeless-ready setup is worth paying attention to. Run tubeless and you'll get a more compliant ride, better puncture resistance, and the option to drop tyre pressure without the risk of pinch flats, which makes a real difference on longer days in the saddle.
These are disc-specific with Centre Lock only, built around 12x100mm front and 12x142mm rear thru-axle standards. Maximum load is 120kg, including bike.
Technical specifications:
- Profile depth: 32mm
- Inner width: 21mm
- Front axle: 12 x 100mm
- Rear axle: 12 x 142mm
- Rim material: 100% unidirectional carbon fibre
- Tyre compatibility: UST Tubeless Ready
- Braking system: Centre Lock only
- Pair weight: 1,495g (front 690g / rear 805g)
- Minimum tyre width: 23mm (max 97 PSI)
- Maximum tyre width: 64mm (max 55 PSI)
- Maximum rider/bike weight: 120kg
Freehub compatibility:
- HG / M11, Shimano HG Road 11/12-speed (other speeds with spacer)
- XDR, SRAM XDR
- N3W, Campagnolo 13-speed
If you're upgrading from stock alloy wheels and wondering whether the Mavic Cosmic SL 32 Disc is worth it, the short answer is yes, particularly if you're riding hilly routes regularly or want a proper tubeless setup without faffing about with conversion kits. These are light bicycle wheels that actually deliver on what the spec sheet promises.