A perfect choice for fast, flat road races or windy triathlons, this wind-slicing carbon wheel features progressive aerodynamic technology and a stable ride quality. The rim is engineered with a NACA profile that's 65mm deep and 26mm wide. The wide, rounded shape of the Cosmic SL 65 rim was developed through countless hours in the wind-tunnel to produce the lowest possible drag without sacrificing stability in crosswinds.

The 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 the Infinity hub platform, which makes them feel quick and responsive out of every corner, they are stiffer and more efficient. The Cosmic SL 65 Disc is engineered specifically for disc brakes and comes with an optimized spoke count and lacing.