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COSMIC SL 40
This versatile carbon road wheel is ideal for riders seeking the perfect balance between weight, aerodynamics and efficiency. New spokes and hubs give the Cosmic SL 40 a light and lively feel for climbing and accelerating.

The rim is engineered with a NACA rim profile that’s 40mm deep and 26mm wide, designed specifically for all-rounder performance on flat or hilly terrain. The new rim bed shape makes it easier than ever to fit tubeless and tube-type tires. Riding UST Tubeless means no tube, so no friction, and more air volume means a smoother ride. The result is a faster ride with super low rolling resistance.
Refined spokes make this wheelset 80g lighter than its predecessor, the Cosmic Pro Carbon UST. Combined with our all-new Infinity hub platform, which makes them feel quick and responsive out of every corner, they are stiffer and more efficient.

The Cosmic SL 40 is engineered specifically for rim brakes. Our proven iTgMax technology features a patented laser treatment of the brake track that shortens stopping distance in both dry and wet conditions, while a special lay-up and heat treatment process makes it the strongest and most durable of all carbon rims for rim brakes. They are available for Shimano cassettes, and convert to Campagnolo and SRAM XD-R with optional driver bodies.
These wheels are designed, engineered and patented by Mavic in Annecy, France, and are 100% handmade in our European carbon factory.

Main features

Accelerate and climb faster, hold higher speeds

40mm NACA inspired rim shape minimizes drag for added speed.
Reduced inertia of the lightweight rim delivers instant acceleration.
Flat double butted spokes saves weight and improves responsiveness

Versatile performance for all road riding conditions

Minimal drag, low inertia and high lateral stiffness makes it fast and efficient on all types of terrain, from the flats to mountain climbs
iTgMAX brake track offers the best braking efficiency and highest reliability of all carbon rims

Improved UST Road delivers more speed, comfort and control in an easy to use tubeless system

No tubes means less friction, better efficiency and grip, a reduced risk of punctures
New rim bed shape makes it easier to mount and change tires

Specifications

  • Weight Pair : 1600 g
  • Weight Front : 705 g
  • Weight Rear : 895 g
  • Material: 100% carbon fiber
  • Height: 40 mm
  • Internal width: 19 mm
  • Drilling: traditional (front 18 holes and rear 24 holes)
  • Braking: pads
  • ETRTO size: 622x19TC
  • Tire: UST Tubeless Ready - Use with Mavic Tubeless Tape
  • Material: steel
  • Shape: straight, flat, constricted (front and rear opposite freewheel side)
  • Shape: straight, flat, antirot (rear freewheel side)
  • Nipples: steel, ABS, black
  • Lacing: radial (front) - Isopulse (rear)
  • Body material: aluminium
  • Body design: INFINITY
  • Axle material: aluminum
  • Axle size: front 9x100 / rear 9x130 - Quick release only
  • Freewheel technology: Instant Drive 360
  • Freewheel: Shimano HG road
  • Bearing technology: QRM automatic setting - sealed cartridge
  • Freewheel body: convertible SRAM XD road (kit V2580101 sold separately)
  • 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)
  • User guide
  • Quick release level 2
  • Carbon brake pads with each wheel
  • Rim tape mounted on wheel
  • UST valve not mounted on wheel
  • Multifonction adjustment wrench with the rear wheel
  • Minimum tyre size: width 23mm - pressure max. 6.75Bar/97PSI
  • Maximum tyre size: width 62mm - pressure max. 3.8Bar/55PSI
  • ASTM category 1 : road only
  • Maximum weight supported by the wheels: must not exceed 120 kg (bike weight included)

Key technology

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.
Efficiency RigidityIsopulse lacing design
Optimum energy transfer. The spokes are laced radially on the drive side and crossed 2 on the non drive side to maximise drive side dish, thus providing a better spoke tension balance between left and right flanges.
Efficiency RigidityUST tubeless technology
Traction and control. Universal Standard for Tubeless. Ready to ride tubeless system. The UST concept improves traction, control and comfort whilst reducing inertia and flats.
Safety ReliabilityiTgMAX carbon clincher technology for rim brake
Integral Glass Transition Temperature. iTgMAX consists in an inner rim bed finished with multiple layers of seamless carbon fiber to achieve a unique one-piece rim contour without cutting any fibers. The brake track is then finished with a laser machining to ensure the best braking efficiency.
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.

User guides and documents

General User GuideDownload PDF

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