Big Four of Thrash 

The Four Largely Popular thrash metal bands that formed in the 1980's. These bands dominated the thrash scene.
They were,Metallica,Megadeth,Slayer and Anthrax.

runners up include-
Exodus,Death Angel,Overkill, destruction and Kreator

the big four of thrash were influenced by hardcore music and NWOBHM and went on to inspire nearly all of todays metal. Slayer Alone is said to be one of the forefathers of death metal.

Big Four of Thrash by kane the main mclain August 3, 2008

Big Four Of Thrash 

the four biggest and best thrash metal bands. metallica, megadeth, anthrax and exodus

metallica, megadeth, anthrax and exodus are the big four of thrash

Big Four Of Thrash by jkgvfhgk December 27, 2006

Big Four Of Thrash 

Metallica, Megadeth, Anthrax, Exodus (not Slayer). As much as we might want it, Slayer was never considered one of the original big four (probably should have been a "big five"). I have seen Slayer replacing Exodus on several pages now including this one and Wikipedia. Not so. Slayer was often categorized differently than the mainstream 80's Thrash bands (Death metal, etc, although I don't think this exactly fits either).

The Big Four of Thrash from the 1980's were Metallica, Megadeth, Anthrax, and Exodus

Big Four Of Thrash by smc123 November 19, 2007

big four of thrash 

Metallica, Exodus, Megadeth and Anthrax. Slayer is not one of the original top four, despite what you may hear. Top citation is Dave Mustaine who pushes a "top 5" that includes Slayer, but does not replace Exodus.

Metallica, Megadeth, Anthrax and Exodus are in the original Big Four of Thrash

big four of thrash by smc123 November 28, 2007