The band's latest visual, for Valtari track 'Fjögur Píanó' ('Four Pianos'), stars Hollywood actor Shia LaBeouf and Denna Thomsen.
It features the naked couple dressing in bondage outfits, getting high off a brightly-coloured lollipop and going on a journey underwater in an imaginary car.
The video was written and directed by Alma Har'el and was created as part of Sigur Rós's ongoing Mystery Film Experiment series.
The Icelandic act's sixth studio album Valtari was released last month and reached number eight on the UK chart and seven on the US Billboard 200.
Watch the video for Sigur Rós's 'Fjögur Píanó' below (NSFW):
