Bilateral is the second studio album by Norwegian progressive metal band Leprous. It was recorded in Ivory Shoulder Studios and Juke Joint Studio by Vegard Tveitan and Heidi Solberg Tveitan, and mixed and mastered at Fascination Street Studio by Jens Bogren. Additional editing by Ivar Barstad. Art direction and design by Ritxi Ostáriz. Cover painting by Jeff Jordan. All songs published by Magic Art Publishing.

The album features guest vocals by Ihsahn on the 4th track of the album, “Thorn”, and the trumpet on “Thorn” and “Painful Detour” are played by Vegard Sandbukt. Trumpet and additional keyboards were recorded in Kulturkirken Jacob, in Oslo by Rune Børø.