X2 (formerly known as
X) is a
steel roller coaster operating at
Six Flags Magic Mountain in
Valencia,
California. It is the world's first
4th Dimension roller coaster and was the final roller coaster conceived and installed by ride manufacturer
Arrow Dynamics. The ride is unique in that the trains' seats pitch 360 degrees forwards and in reverse independent of the main chassis. The coaster initially opened to the public on January 12, 2002; numerous malfunctions delayed it from debuting in 2001 as was originally anticipated. On December 2, 2007, the ride closed for its transformation into X2. It was completely repainted, received new third generation vehicles, and featured new special effects including a sound system and a pair of
flame throwers. The ride reopened on May 24, 2008, following the upgrades. The ride's moniker is pronounced X-two by the amusement park; however, due to the '2' being in superscript, the ride is sometimes referred to as X-squared, or Xtreme to the Second Power by fans of the ride.