X4, X-4 or x4 may refer to: *

BMW X4 The BMW X4 is a compact luxury crossover SUV manufactured by BMW since 2014. It is marketed as a sports activity coupé (SAC), the second model from BMW marketed as such after the X6, and features styling elements and the roofline of a tradit ...

, a German crossover automobile *

Sehol X4 The Sehol X4 or previously the JAC Jiayue X4 is a compact crossover produced by JAC Motors under the Sehol brand. The Sehol X4 was briefly called the Sol X4 and JAC Jiayue X4 before the Sehol brand name was established. The Sehol X4 is essentially ...

, a Chinese crossover automobile * Honda X4, a Japanese motorcycle *

Moto X4 Moto X4 is an Android smartphone developed by Motorola Mobility, a subsidiary of Lenovo. Unveiled on August 31, 2017, at IFA, it is a revival of the previously discontinued Moto X line. It was released in Europe at the end of September 2017. In ...

, an Android Smartphone * ''

Mega Man X4 ''Mega Man X4'', originally released in Japan as , is a 1997 action-platform game developed and published by Capcom. It is the fourth game in the ''Mega Man X'' series and the second game in the series to be released on the Sega Saturn and Play ...

'', a video game * Naish X4, a kitesurfing kite * The

Norteños Norteños (, ; ''Norteñas'' for females) are the various affiliated gangs that pay tribute to Nuestra Familia while in California Incarceration in the United States, state and federal correctional facilities. Norteños may refer to Northern ...

street gang * Northrop X-4 Bantam, an early jet age research aircraft * A common name for

petroleum ether Petroleum ether is the petroleum fraction consisting of aliphatic hydrocarbons and boiling in the range 35–60 °C, and commonly used as a laboratory solvent. Despite the name, petroleum ether is not an ether; the term is used only figurativ ...

* A four-lane

PCI Express PCI Express (Peripheral Component Interconnect Express), officially abbreviated as PCIe, is a high-speed standard used to connect hardware components inside computers. It is designed to replace older expansion bus standards such as Peripher ...

slot *

Ruhrstahl X-4 The Ruhrstahl Ru 344 X-4 or Ruhrstahl-Kramer RK 344 was a Wire-guided missile, wire-guided air-to-air missile designed by Germany during World War II. The X-4 did not see operational service and thus was not proven in combat but inspired conside ...

, a German World War II air-to-air guided missile *

Ultimate X4 ''Ultimate X4'' is a Marvel Comics miniseries, set in the Ultimate Marvel universe outside the mainstream continuity. It features a crossover between the Ultimate X-Men and the Ultimate Fantastic Four. This miniseries is the first canonical team ...

, a comic-book crossover in the Ultimate Marvel Universe *

X4 (New York City bus) The Metropolitan Transportation Authority (MTA) operates 80 express bus routes in New York City, United States. Express routes operated by MTA Bus Company are assigned multi-borough (BM, BxM, QM) prefixes. MTA New York City Bus operates seven ...

, an express bus route *

Stagecoach Gold bus route X4 Stagecoach Gold bus route X4 is a bus route in England that links Northampton and Peterborough via Wellingborough, Kettering and Corby. This service is operated by the Stagecoach Midlands bus company. Route This route was launched on May 28, ...

, a bus route in the United Kingdom *

X4 virus HIV tropism refers to the cell type in which the human immunodeficiency virus (HIV) infects and replicates. HIV tropism of a patient's virus is measured by the Trofile assay. HIV can infect a variety of cells such as CD4+ helper T-cells and mac ...

, a T-cell tropic HIV * '' X-Men Origins: Wolverine'', a 2009 film * '' X-Men: Days of Future Past'', a 2014 film *

WordPerfect WordPerfect (WP) is a word processing application, now owned by Alludo, with a long history on multiple personal computer platforms. At the height of its popularity in the 1980s and early 1990s, it was the market leader of word processors, disp ...

X4, a version of word processing software * '' X4: Foundations'', a 2018 video game

See also