3RACHA (쓰리라차) is a hip-hop subunit of Stray Kids formed by JYP Entertainment. The trio consists of CB97, SPEARB and J.ONE.
On January 18, 2017, they uploaded their first mixtape, J:/2017/mixtape, on SoundCloud, consisting of seven tracks. On August 16, 2017, they uploaded their second mixtape, 3Days, on SoundCloud as well, consisting of nine tracks. Before this, they were announced to be a part of a JYP's survival show titled Stray Kids.
They released their third mixtape, tilted Horizon, on December 20
In January 2018, 3RACHA released a song titled "Start Line" to celebrate their first year as a group. On March 26, 2018, they debuted with Stray Kids.
They released the song "Zone" on September 9 as part of Stray Kids' SKZ-Player series.