Not one ski but several, Salomon's X-Race varies its sidecut radius by length, allowing skiers to match the ski to their preferred turn shape. So for example if you pick the 155cm length, you'll be banging out turns on an 11-meter radius ski (!), whereas if you choose a 180cm X-Race, you'll be cruising on a far more expansive 19-meter turn radius. That's an enormous difference—so much so it's probably .
— April 11, 2013
Andy Lewicky is the author and creator of SierraDescents