The Cosmic Pro Carbon features a 45mm deep profile rim giving drag reductions no matter what conditions you are riding in. The external rim width is 25mm integrating perfectly with 25 mm tyres to give better control in cross wind steering and lower drag. The rims are made from Maxtal and 12K carbon fibre also feature Mavic’s patented inter-spoke milling reducing the weight up to 40g making climbing and acceleration faster. Maxtal is an exclusive aluminum alloy that offers a higher strength to weigh ratio than conventional 6106 aluminum. The complete wheelset weighing in at 1650 grams excluding tyres. The wheelset is equipped with Mavic instant drive 360 giving superfast engagement and adjustable hub bearings allowing higher rolling efficiency with quick adjustment. The rear hub is Shimano or can be converted to an XD-R with option free hub body available separately. Key FeaturesThe Cosmic Pro Carbon from Mavic has been reinvented to give a better performance through better aerodynamics and lighter wheels45mm deep NACA profile produces low drag in varying conditions. 25mm external rim width is optimized for 25mm tire for low drag and predictable crosswind steering. 12K carbon rim flanges boost stiffness for sharp handling and pedaling efficiency.Patented elliptical spokes further enhance aerodynamics. The wheelset is paired with Mavic Yksion Pro tyres with a grip link on the front and power link on the rear to transfer power to the road efficiently. Customer ReviewSignificant gains!★ ★ ★ ★ ★ “I had ordered some RS81 C50s but these were out of stock so ended up with these beauts. From the first ride they felt great and have significantly improved my average pace both on my commute to work and on the one occasion I have raced on them. They’re far from a cheap upgrade but make a real difference.” Why buy from Evans Cycles?As cyclists ourselves, we know you’ll be keen to get latest cycling equipment for your bikes at the best deal, that’s why we offer you a great service from the very start of your journey with us.Click and collect: Buy online and easily collect at your local store.Price Match: We offer a price match guarantee if any of our direct competitors are cheaper than us. This includes Cycle Surgery, Wiggle, Chain Reaction Cycles, Halfords, Tredz and Cycle Republic.90 Days return: If you change your mind, any item, except food, videos, DVD’s, face masks, RIDEIT events and software can be returned to us for any reason within 90 days, provided it has not been used or fitted, and is returned in its original packaging with a valid proof of purchase.