X2

X2 stands for:

A proprietary transfer method of the company U.S. Robotics 56k telephone modem, which was replaced by the standard of the ITU V.90 standard
Bell X -2 Star Buster, a U.S. experimental aircraft for supersonic flight
Sikorsky X2, an experimental helicopter from the U.S. company Sikorsky Aircraft Corporation
The original title of the movie X -Men 2
AMD Athlon 64 X2 and AMD Turion 64 X2 Dual -core microprocessors from AMD
The abbreviation for the game console Xbox 360
A class of interference suppression capacitors
The series designation of a high-speed train, SJ, marketed as X2000

X2 represents

X2 ( Six Flags Magic Mountain), a roller coaster at Six Flags Magic Mountain amusement park
X2: The Threat, a science fiction computer game, see X (computer game)