1988
EXTREME originates in the summer of 1988 by Peter Zacharias (guitar) and Radim Konir (drums) invited Vaclav Soukup (bass, vocal). Michal Kourek (guitar) complemented band in April.

1989
Less than a year after their inception – in June 1989, they made their debut at the Rockfest in Jihlava.

1990
In the summer of 1990 they recorded the official demo of „Není úniku!“ ("No Escape!") and Peter takes over the post vocalist.

1992
In the spring of 1992, Radim left the band. Band joined new drummer Jaroslav Kandus Istvan. In the summer of 1992 they recorded demo in the studio SOUNDTRACK in Jihlava called "Ideal World".

1996
EXTREME joined new bend members. Besides Peter are guitarist Radek Dolejsi (Marauder, Screening) and drummer Kandus – Jaroslav Istvan. In March 2000, they recorded the CD called "Slaves Of Religion".

2003
Peter leaves band to join Mea Culpa, where he is active until 2006.

2009
EXTREME performs several performances, including "Hardline Therapy". After that, they cut down live performances and intensively prepare a new concert playlist.

2016
EXTREME joined Petr Pokorny (bass) and Michal Svatek (drums). 
They are involved in the production of new material they performed concerts occasionaly.

2018
In the spring of 2018 Dusan Kiss is invited to co-operate with his rich experience as a musician, promoter and manager.
In June 2018 they enter AB Records. The first four tracks and the MAN OF LIES video are recorded. In October, they are recording five more songs and a second video clip.
At the end of 2018, EXTREME THRASH ATTACK (Spark 2018/10) is published in SPARK magazine and EXTREME – SILNĚJŠÍ NEŽ KDY JINDY (Spark 2018/11) a month later.

2019
In February 2019, the CD Technological Death is released, which Peter presented in the HARD & HEAVY program on Radio BEAT, where he was a guest of Petr Korál.
In March 2019 the band released a official video MAN OF LIES in the Czech Paráda contest on TV Rebel where they became EXTREME the band of the month March.
On the radio Čas Rock introduced the band in a short interview.
At the end of March 2019, the CD Technological Death was christened and the music journalist and moderator Petr Korál became the godfather.
In May 2019, the review of Technological Death is published in SPARK magazine.
In June 2019, the band released the second official video HIDDEN VIOLENCE in the TV show Czech Paráda on TV Rebel.

2020
At the beginning of 2020, Peter is preparing material for a new record. Peter dissolves the current lineup of the band, and he gets Dušan Kiss (Medrin, Obductor, Mantodea, Roots of Hate, Theatre, Stoneface, Medfreš, The Revolt, Pork Soda, Vipytá Konef, Menhir, Moravius) for collaboration, as a drummer for the recording of the new album EXTREME.Milan Douda holds the position of bass  player for studio collaboration.

2021
At the beginning of November 2021, preparations for the new album culminate and the band moves to AB Records studio to record drums and bass. In the same month, Peter recorded both guitars and at the beginning of 2022 he played solos and vocals. Dusan became a full member of EXTREME.

2022
In June 2022 second studio album Save Your Soul is released.

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