Link Updated (Dec 16 2010)
This one is a 7" remix of the great Born Jamericans' Yardcore cut from Bunafire Sound, produced by Mamba, on the Bam Bam riddim. It's a German crew that's all what I know about them...

Tracklist :
A - Born Jamericans - Yardcore (Pushing MamBam Remix)
B - Born Jamericans - Yardcore (Straight MamBam Remix)