Slam - Ingens Slav.

Fuck yea, Swedish skaterock! This is a great hardcore act from Sweden. They were featured on Thrasher's amazing skate rock series entitled "Thrasher Skate Rock Vol 3 - Wild Riders of Boards" with the tracks "Jorden den är vår" and "Wild riders of boards". This record was released in 1984  on their own label Slam Records. I have a 7" and another 12" by them, which I'll try and upload sometime in the future, in the meantime you'll will have to settle with this.

Link. 

 Flyer from the last Slam concert (I think) i Copenhagen 1986.