Post Malone‘s ‘Go Flex’ leaked over a year ago in a low quality, unfinished form, but even then the song sounded like a hit. Today, Zane Lowe over at Beats 1 Radio premiered the final product. The song sounds like a bonafide crossover smash which could surpass the height of ‘White Iverson’. That’s major. Stream or download ‘Go Flex’ below.