On 16 February 2018, they released a self-tilted EP including the songs - "Mamacita", "Dimelo", "Mona Lisa" and "I'm Feeling You". On 30 March 2018 they performed live on The X Factor Denmark with their single "Dimelo". On 23 May 2018, it was announced that Rak-Su will support Little Mix on their Summer Hits Tour 2018. On 29 June 2018, they released "Pyro Ting" with Banx & Ranx. On 28 September 2018, Rak-Su released their new single "I Want You To Freak", with the official video released on 5 October 2018. On 6 October 2018, it was announced that Rak-Su will support Olly Murs on his You Know, I Know Tour in 2019. On 21 October 2018, Rak-Su returned to The X Factor UK. They performed their new single I Want You To Freak on the first results show. On 10 November 2018 it was announced that both Rak-Su and Little Mix have parted ways with Syco Music, with the label stating that they will no longer work with Modest! Management, who manages both acts, and facilitating a transfer to RCA Records. Speaking about their time at Syco and subsequent transition to RCA, the band admitted that the experience was frustrating, as they were unable to release as much new music as they originally intended, and that they had no involvement in the transition that occurred, but stated that RCA agreed with the direction they wanted to take with their music. On 22 February 2019, they released their second EP, Rome. On 5 April 2019, Rak-Su released their new single "Yours or Mine". On 5 July 2019, they released their single "Rotate (Clockwise)". On 29 August 2019, it was reported that Rak-Su had been dropped from RCA due to lack of mainstream chart success.