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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
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.

Weight

  • 705 grams (Front)
  • 1600 grams (Pair)
  • 895 grams (Rear)

Rims

  • Material: 100% carbon fiber
  • Height: 40 mm
  • Drilling: traditional
  • Tire: UST Tubeless and tubetype
  • Internal width: 19 mm
  • ETRTO size: 622x19TC Road
  • Use with Mavic Tubeless Tape
  • UST
  • iTgMAX

Spokes

  • Material: steel
  • Shape: straight pull, flat, double butted
  • Nipples: aluminum, ABS
  • Count: front 18, rear 20
  • Lacing: front crossed 2, rear Isopulse
  • Isopulse

Hubs

  • Front and rear bodies: aluminum
  • Axle material: aluminum
  • Infinity Hub
  • Instant Drive 360
  • QRM Auto

Versions

  • Freewheel: Shimano/Sram

Compatibility

  • Freewheel: Shimano/Sram, convertible to Campagnolo and XD-R with optional driver bodies
  • Front axle: Quick Release only
  • Rear axle: Quick Release only

Compatible Adapters and freewheel bodies

  • ID360 Shimano / Sram Light freewheel body ([LV3850100])
  • ID360 Campagnolo freewheel body ([LV3440100])
  • ID360 XD-R freewheel body ([LV2580100])
  • ID360 Shimano / Sram freewheel body ([LV3430100] - Delivered on the wheel)

Intended use

  • ASTM CATEGORY 1 : road only
  • For a longer longevity of the wheel, Mavic recommends that the total weight supported by the wheels doesnn't exceed 120kg, bike included
  • Recommended tyre sizes: 25 to 32 mm
  • Max. Pressure: see indication on wheel and tyre. If they differ, use the lowest of the 2

Delivered with

  • BR301 quick releases
  • Carbon brake pads
  • UST valve and accessories
  • Pre-installed tubeless rim tape
  • User guide
Instant Drive 360 freewheel technology

Instant Drive 360 freewheel technology

The new Instant Drive 360 freewheel system is super light and fast to engage with only 9°. A large contactless rubber seal provides low friction, while a wide array of end caps makes it super versatile.
UST tubeless technology

UST 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.
Isopulse lacing design

Isopulse 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.
iTgMAX carbon clincher technology for rim brake

iTgMAX 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
QRM Auto bearing preload technology

QRM Auto bearing preload technology

Qualité de Roulements Mavic Auto Our latest innovation. 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.
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