COSMIC SL 45 DISC 23mm

The Mavic Cosmic SL 45 are carbon road wheels designed for everyday use, from training to quick rides. The 45 mm rim profile in unidirectional carbon, validated in a wind tunnel, aims for reduced drag and stable handling. The 23 mm internal width, UST Tubeless Ready, accommodates road tires starting at 28 mm and improves comfort on uneven surfaces. The INFINITY hubs and Instant Drive 360 freehub provide direct power transfer with simplified maintenance. Weighing 1,575 g per pair, with 24 spokes per wheel, Center Lock rotors, and 12x100/12x142 axles, you get a versatile Mavic road wheel, ready for long distances and sprints alike.

Main features

45 mm UD carbon rim profile, wind tunnel tested: speed on the flat

The 45 mm UD carbon rim and flat spokes were developed with aerodynamics experts and tested in a wind tunnel.
Goal: to minimize drag as speed increases, while maintaining stable handling in gusty conditions. You maintain a steady speed without having to expend all your energy.

INFINITY hubs, Instant Drive 360 freewheel: sharp acceleration out of corners

The INFINITY hub optimizes stress distribution and uses 24 straight, flat spokes per wheel, laced in pairs.
The Instant Drive 360 freewheel is designed for quick engagement. QRM Auto self-aligning bearings maintain smooth operation and minimize play over time.

23 mm internal width, UST Tubeless Ready: stable comfort regardless of road surface.

With a 23 mm internal width, the tire takes on a rounder shape and handles road imperfections better.
You gain comfort on long rides and uneven surfaces.
The rim is UST Tubeless Ready and comes with a rim tape pre-installed, for a clean and reliable setup.

Key technology

Efficiency RigidityAero Wide Rim Technology
Unmatched speed, control, and comfort combo.
Efficiency RigidityInstant Drive 360 freewheel technology
The new Instant Drive 360 freewheel system is super light and efficient. A large contactless rubber seal provides low friction, while a wide array of end caps makes it super versatile.
Safety ReliabilityInfinity hub design
Efficient power transfer thanks to optimised non-contact spoke lacing (no noise under load) and tension distribution. The length of the spokes at the front and rear is identical. Maintenance is easy thanks to a tool-free solution.
Safety ReliabilityQRM Auto bearing preload technology
Qualité de Roulements Mavic Auto. Those cartridge bearings are of course double sealed with C3 internal clearance. Their preload is automatically adjusted to guarantee a perfect spin with no play on the long run.

Specifications

  • Weight Pair : 1575 g
  • Weight Front : 730 g
  • Weight Rear : 845 g
  • Material: 100% Unidirectional carbon fiber
  • Height: 45 mm
  • Internal width: 23 mm
  • Drilling: traditional (front/rear 24 holes)
  • Braking: disc
  • ETRTO size: 622x23TC hooked
  • Tire: UST Tubeless Ready
  • Shape: straight, flat, constricted (front and rear)
  • Nipples: steel, ABS, black
  • Lacing: crossed 2 (front and rear) 
  • Body material: aluminium
  • Body design: INFINITY
  • Disc standard: Center Lock® only
  • Axle material: aluminum
  • Axle size: front 12x100 / rear 12x142 - Convertible to quick release with adapters (not included)
  • Freewheel: Shimano HG road / Sram XD road
  • Bearing technology: QRM automatic setting - sealed cartridge
  • Freewheel body: convertible SHIMANO HG light road (kit V3850101 sold separately)
  • Freewheel body: convertible SHIMANO MS (kit V3990101 sold separately)
  • Freewheel body: convertible CAMPAGNOLO ED (kit V3440101 sold separately)
  • Freewheel body: convertible CAMPAGNOLO N3W (kit V4270101 sold separately)
  • Front axle adapters: 12x100 convertible to 9x100 (kit V2680301 sold separately)
  • Rear axle adapters: 12x142 convertible to 9x135 (kit V2510801 sold separately)
  • User guide
  • Rim tape mounted on wheel
  • UST valve not mounted on wheel
  • 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)

Cyclists' opinions

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Ma
MartinAdvanced (+3 rides per week)
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3/26/26
“I’m truly impressed with the product. The wheels are absolutely spectacular and they fully met — and honestly exceeded — my expectations. One of the things I appreciate most about Mavic is what I see as the perfect balance between price, quality, and manufacturing origin. Knowing the product comes from a brand with such a long history and strong heritage gives me a lot of confidence when buying. That tradition and reputation really matter. I’m also a returning customer. I already own a previous set of Mavic wheels that have served me extremely well, which is exactly why I chose Mavic again. This purchase was simply an evolution to a slightly higher level within a brand I already trust. I should also mention that I’m not a professional cyclist, but what we would call a very dedicated amateur. I ride a lot and I really put my equipment to the test, and these wheels perform extremely well. It’s great to see a company with such a long trajectory continuing to produce outstanding products. I’m very happy with the purchase and look forward to enjoying these wheels for many years. Thank you for making such excellent equipment.”
Ma
Answer from the team
“Thanks so much ! The Mavic Team”

$1,000.00