Career
He was nicknamed "Mister Sandman" and the "Golden Viking". He medaled twice at international events and represented Norway at the 1992 Summer Olympics. As a pro he fought in Denmark as a light-heavyweight where he was a feared puncher with a vulnerable chin.
His professional record is 45 victories and 6 losses.
His most notable bout was a 1998 IBF title challenge, where he was outpointed by Reggie Johnson. Klemetsen retired after a bout which resulted in a loss against Thomas Hansvoll on 16 June 2001.
He is currently a coach at the Martial Arts Institute in Stavanger. In 2005 he joined the party list of Demokratene in an effort to secure a Parliament seat for January Simonsen.