S-X and KSI debuted their first collab in 2019, when S-X was featured on KSI’s single “Down Like That”, which was included in KSI’s debut studio album Dissimulation.

In 2021, S-X was featured on KSI’s second studio album All Over The Place, on track “Sleeping With the Enemy”.

In 2022, both of the artists released a single “locked out”, which was included in S-X’s album things change.