Basket Checkout
Tel: 0345 257 0808

Mavic Cosmic Pro Carbon Exalith 25 Wheel Rear

Pay monthly from £22.10

* Required Fields

Free delivery

Free delivery

We don’t charge anything for standard delivery to the UK mainland over £20.

Collect in-store

Collect in-store

Pick up your order at your nearest store any day of the week.

Easy returns

Easy returns

Faff-free returns and exchanges if you’re not absolutely satisfied with your purchase.

Product Details

Mavic Cosmic Pro Carbon Exalith 25 Wheel Rear

This carbon wheel offers an optimal balance of low frontal drag and crosswind stability making it a perfect upgrade for making your road bike more aero.

Crosswind stability means you can ride Mavic Cosmic Pro Carbon Exalith wheels in all conditions (unlike first-generation time-trial/triathlon bike disc wheels, which are horrible to ride in crosswinds).

What's more, the wheel's Exalith alloy brake track overcomes most carbon wheels' main shortcoming - compromised brake performance when the wheels heat up on long downhills.

Exalith Brake Track
The rim's brake track is an Mavic exclusive aluminium alloy whose brake performance is 18% more efficient than their previous best alloy rims. Another bonus is that Mavic's Exalith treatment will last for 1,000s of miles so the wheels will retain their carbon stealth black good looks. If you want the lightweight stiffness of carbon wheels without sacrificing braking performance, these wheels come highly recommended.

The best balance of low frontal drag and crosswind stability

  • 45mm deep NACA (National Advisory Committee for Aeronautics) profile reduces drag in all conditions
  • 25mm external rim width integrates perfectly with the (supplied) 25mm tyre to reduce drag and enhance crosswind control
  • Patented elliptical spokes enhance aerodynamics

Perfect efficiency and low weight

  • The 17mm (internal width) rim combined with the Mavic 700x25mm tyre (which comes supplied and ready fitted) conforms to the growing consensus that wider tyres are not just more comfortable, they're also faster. More on this.
  • The whole wheelset weighs just 1,650g (front and rear without tyres, tubes, rim tapes and QR) to make every climb faster and/or easier

Instant Drive 360 freehub mechanism
The wheel's freehub Instant Drive 360 ratchet drive system is mechanically simpler, lighter weight and it engages almost twice as fast as traditional pawl mechanisms.


  • The wheel takes a Shimano/SRAM-compatible 9/10/11-speed cassette
  • The rims are 17mm wide (internal width) and 45mm high
  • Recommended tyre size: 700x25 to 700x32mm
  • Straight pull (stronger than J-bend), bladed, double butted steel spokes (16 on the front, 20 on the back)
  • Isopluse lacing - the spokes are laced radially on the drive side and 2-cross on the non drive side to maximise drive side dish, thus providing a better spoke tension balance between left and right flanges.
  • Exalith treatment for optimal braking efficiency and a distinctive look
  • Braking distances are 18% shorter than average in wet or dry conditions
  • Reduced rim wear for extra longevity and a full black look that lasts for thousands of kilometers
  • SUP (Soudé Usiné Process) welding - here the rim joint is welded then milled for a smooth seamless finish to ensure the rim is absolutely true and the braking surface is judder free
  • QRM (Qualité de Roulements Mavic) double sealed cartridge bearings are very smooth-rolling, and they're user adjustable
  • Supplied fitted with made to match 127tpi Mavic Yksion Pro tyres (tube and rim tape supplied)
  • The PowerLink rear tyre minimises rolling resistance to help convert power into speed
  • Maximum recommended pressure: 110psi
  • The wheel comes supplied with a pair of Exalith brake pads (don't use alternatives!), a quality QR, and a multitool that combines a spoke wrench suitable for bladed spokes, a QRM bearing adjuster and a tyre lever
  • Recommended maximum weight: 120kg (rider + bike)

The benefits of buying a system built wheel like this - find out more.