Riihimäki Cocks were founded in 1973 when the club decided to separate from RiPS. The newly founded team gained promotion to Finnish Handball League during the following season. The team won their first Championship medals in 1978, when the team finished second in the championship. Riihimäki Cocks got their first Finnish handball championships in 2007 and repeated the success in 2008. Cocks also won the Finnish Cup in 2007 and 2008, winning the double two times consecutively. So far, the club is a total of 12 champions and 11 cup winners.