Impetus is a reissue of the EP Passive Restraints by the band Clutch in 1997.

The EP has two tracks added to it from the Naive album, a compilation of bands that Earache Records put out in 1992, which has since been unavailable due to a lawsuit from Evian, as the album cover looked exactly like the bottled water logo it uses.

[2] The contents of this EP are the same as the original, with a demo version of the title track added, and the song "Pile Driver" from the 12" vinyl edition of Pitchfork from 1991.

[3] In late 2018, the EP was reissued on vinyl, using the artwork from the original three-track Passive Restraints release.

This 1990s metal album–related article is a stub.