Pirate Bays Knaben -

If you meant (possibly a typo for Knaben as in "boys" in German/Dutch, or a misremembered release group name), no widely known torrent release group or notable scene release goes by that exact name.

If you meant a general review of as a torrent index for “kids/teens” (Knaben): Useful review: The Pirate Bay for younger users pirate bays knaben

The Pirate Bay (TPB) is one of the oldest and most resilient BitTorrent indexes. “Knaben” (German/Dutch for boys or lads ) might refer to teens or young users searching for content. If you meant (possibly a typo for Knaben