Killer bass tone on this album. Love it. No pedal is going to nail this sound. It's a combination of heavy picking, bridge pickup, and hot preamp into an overdriven tube amp with a sealed cab. He very likely might be using something like a tubescreamer to get those growly mids, initial breakup and push the amp hard, but I'm sure most of the grit is from the tubes.
Rickenbacker Club #506