Engineered for polka dot jersey contenders and riders who enjoy fast climbs, the Roval Alpinist CLX III is our lightest road wheelset yet at 1,131g, shedding 134g from its predecessor. A new lightweight hub and Roval Aero Composite Spokes by Arris save 103.5g, while being 20% stronger than steel. And the proof is in the performance, helping Demi climb the Tourmalet 5 seconds faster than she ever has.