Years of supporting the haute route has taught us what works and what doesnt the ksyrium pro exalith haute route is a special edition wheel created for the sportives majestic climbs combining low weight with incredible efficiency weve added a wider lighter ism4d rim for improved aerodynamics and lighter weight with zicral spokes and isopulse lacing for unbeatable stability the ksyrium pro wheel pushes weight saving one step further making it a high performance choice for any kind of r