X Series Slalom LineX Series The Standard for Slalom Ropes A line designed with perfect amount of stiffness stretch for skiers wanting that quick confident response with connect to the boat the will help you get wide for the next buoy. While designed as a stiffer rope the X Series has appealed to a wide range skiers due to its connection to the boat. The X Series allows to keep that connection to the boat allowing the skier the ability to lean on the line when needed.