Yeti's SB6 Carbon XX1 Pro Complete Mountain Bike makes no pretenses about its pedigree, its intentions, or its relative record at fulfilling those intentions. By leading with the Super Bike SB and Pro designations, Yeti set the bar pretty high by winning the Enduro World Series twice in a row before it even went into production, it exceeded that bar. Yeti was so dedicated to making this the best bike in the world that it didn't even start selling it until it already was the best bike in the world. This unprecedented success comes courtesy of the SB6 Carbon Pro's blending of two of Yeti's suspension philosophies in order to create a platform that climbs well, courtesy of its Switch Link heritage, without sacrificing the ability to take big hits, which it owes to its 303 pedigree. The result is the Switch Infinity. And two Enduro titles. The original Switch Link has been written to death in publications across the industry, so we'll keep this brief by touching on the differences between Link and Infinity. When you get past the 30% stroke while really pushing the Link's limits, the eccentric creates a momentary harshness under rapidly successive big hits. The Infinity replaces the Link's sinuous travel arc with a linear plane of motion, so it changes direction without getting caught in the minute dead spot that produces that harshness. Of course, 95% of all riders won't ever push the Switch Link hard enough to experience this dead spot, but Yeti being Yeti went ahead and fixed it, anyway. Don't let the suspension's apparently complicated construction fool you into thinking this is a temperamental piece of nightmarish maintenance. FOX has successfully tested production units to well over a million compression cycles while completely submerged in mud, a durability that's further proven by the three year old test units that are still in use today and the above mentioned Enduro success. For those of us who are our own mechanics, maintenance is simplified by the ...