Some people reflect on the hardtail like some relic from years past. Little do they know itAAAs still alive, and kicking the crap out of all but the most razor-sharp full-suspension XC bikes. Want proof? Check out Rocky MountainAAAs Vertex RSL 50 XC. With a superlight carbon frame, the Vertex RSL 50 XC achieves elevation gains with the ease of a fighter jet and soaks up washboard descents at any speed. Of course, thereAAAs always a catchAAA in this case, getting stuck behind plump full-suspension left-lane-losers with their turn signals obliviously blinking. Sure some will argue that they can AAAslayAAA the downhill with their killer four inches of travel, but really, these are flowy cross-country trails. In the right hands, a hardtail is untouchable. Just check the lineup at the next pro XC race for reassurance, and start practicing AAAon your right!AAA to avoid any undue stress to your vocal cords.