Mavic Cosmic SLR 45 Disc wheelset 2025

With its wider 23mm UD2 carbon rim, the Cosmic SLR 45 Disc 23 is the best-performing road wheel ever designed by Mavic

Less drag, more watts thanks to its 45mm rim profile and elliptical spokes developed by our aero experts, thanks to its MAVIC FORE - tapeless technology and its 23mm wider rim, the COSMIC SLR 45 has an unrivalled tubeless seal for the best possible performance and increased rigidity. The rim's reduced inertia means instant acceleration and perfect power transfer.

Features

• Enhanced aerodynamics
• Faster than ever
• Enjoy a more agile ride with these lighter wheels

Tech Specs

Rim

• Material: 100% carbon fiber with UD external layer
• Height: 45 mm
• Internal width: 23 mm
• Drilling: Fore Carbon tapeless tubeless technology (front/rear 24 holes)
• Braking: disc
• ETRTO size: 622x23TC
• Tire: UST Tubeless Ready
• Real weight: 682 g (front wheel); 816 g  (rear wheel)

Spokes

• Material: steel
• Shape: straight, aero, constricted, antirot (front and rear)
• Nipples: brass, black
• Screw: M6
• Lacing: crossed 2 (front and rear)

Hubs

• 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 technology: Instant Drive 360
• Freewheel: Shimano HG road
• Bearing technology: QRM automatic setting - sealed cartridge

Included

• User guide
• UST valve not mounted on wheel
• Multifonction adjustment wrench + spoke M6 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

Tubeless Fore Carbon Rimless
More rigid and robust. Instead of drilling holes in the rim to anchor the spokes and mount nipples, a threaded metal insert is built into the drape of the rim's lower deck, allowing the spokes to be directly screwed in. The rim's upper bridge remains intact. There is no need for a rim base to ensure a watertight seal.

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.