With superlight 32mm carbon rim and tapeless tubeless technology, this superlight disc-brake wheel is an instant performance boost, especially on steep climbs. When you’re gunning for the KOM on the toughest mountain climbs, nothing gives you more of a boost than a light and snappy carbon wheelset. This newcomer in the Cosmic family takes over the venerable Ksyrium Pro Carbon SL Disc. It features a reengineered carbon rim that’s the lightest in its category. Its 32mm airfoil shape slices through wind, and because the rim is made specifically for disc brakes, you’ll have more confidence and control on the descents. The rim is crafted with a new laminate and our exclusive Fore Carbon technology that leaves the upper rim bridge intact and reinforces the rim only where needed. This saves 40g per wheel. The spokes attach to the rim without any need to drill the upper rim bed, so no rim tape is required. That means more weight savings (30g per wheel) and less hassle. The new shape of the rim bed makes it easier than ever to mount and remove tires, and you get super low rolling resistance with our UST Tubeless setup. No tube means no friction, and more air volume means a smoother, faster ride. It also uses our patented elliptical spokes to save another 5 watts and make you faster. Our new Infinity hub platform optimizes spoke lacing for efficient power transfer through highly controlled spoke tension. Our Instant Drive 360 freewheel, coupled with our automatic bearing preload adjustment (QRM Auto), provides fast engagement, high stiffness and added durability. It's available for Shimano and SRAM XD-Road and can convert to Campagnolo with an optional driver body. It's compatible with 12x100 axle up front, 12x142 rear, and you can convert to Quick Release with the supplied adapters. For Center Lock disc rotors only. These wheels are designed, engineered and patented by Mavic in Annecy, France, and are 100% handmade in our European carbon factory. Main features Instant acceleration, improved climbing capabilities 32mm deep/28mm wide NACA profile optimized for disc brakes Fore Carbon spoke attachment saves 40g and eliminates rim tape (another 30g saved per wheel) Patented lightweight aero spokes Stiffer wheel for improved power transfer Fore Carbon technology keeps the rim upper bridge solid and makes the rim stiffer New Infinity hub plaform: stiff axle, durable bearings and new hub design with optimized lacing and spoke tension ID360 freewheel technology for instant power transfer 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 Fore Carbon drilling technology doesn't require the use of rim tape