The NYC goons who de-chained YBN Almighty Jay and sent him to the hospital have been picked up by the Feds.

But it has nothing to do with their assault on the young rapper.

Zae Numbafive and three other Jack Boyz members were arrested Wednesday in the Bronx as part of an unrelated federal investigation.

They are all facing RICO and attempted murder charges in connection with the shooting of an off-duty NYPD cop.

A fifth Jack Boyz member remains at large. They are all facing life.