reINVENTION opERATION is a remix album by proGREX.iv, released on February 18, 1997, by Full Contact Records.

[2] proGREX.iv is a collaborative project between Mick Hale and vMarkus from Crocodile Shop with George Sarah of THC that features contributions from anGee, Sarah Folkman of Geko, Jared Hendrickson of Chemlab and Mitsy Larkin.

The album partially consists of tracks from Consenting Guinea Pig by T.H.C.

's Consenting Guinea Pig and D!v!s!on #9's The True Creator, accusing the former for being "nothing altogether new or innovative"[8] and the latter's "bland bass and percussion" of transforming the album into a "common collection of insipidly derivative material.

"[9] Sonic Boom wrote a negative review for reINVENTION opERATION as well and said "in essence this eclectic collection of Drum'n'Bass, Trance, and other more experimental beat driven electronics, is no more than regurgitated music.