In 1951 the club became the R.R.C. Tirlemont. Between 1957 and 1967 Tirlemont spent 10 seasons at lower levels and played one more season in the second division in 1967-68 finishing last. In 1973 there was a new name change to R.R.C. Tienen.
Eight years later the matricule n°132 merged with the Voorwaarts Tienen to become K.V.K. Tienen. The KVK accessed to the second division in 1999. In spite of a 17th place (on 18) in 2002 the club remained in the second division for two more seasons as K.R.C. Zuid-West-Vlaanderen was refused its license. In 2004 the 17th place at which Tienen finished the championship caused it to be relegated to the third division.
In 2006, KVK Tienen promoted back to the Belgian second division. Daniel Nassen is currently coach for team.