Bill Kelliher

At 5:10 in this rig rundown Bill talks about his signature pickups.

"It sounds great I mean the pickups in it are amazing the Nitro Hemis, they're really hot pickups, real precise, and they got a cool name" Bill at :27s.

In many of his guitars (including signature silverburst flying v) he uses 57 classic humbuckers.

In this post Mojotone announces the hellbender pickup set. This is Bill’s signature pickup set with Mojotone. The pickups are designed to achive tones ranging from brutal high gain to lush cleans. The pickup feature two different wire gauges for increased dynamics, and smooth coil taped sounds. The pickups blend ceramic and alnico magnets to get tighter attack, more output, and the right amount of sustain.

According to a Guitar Geek rig diagram from 2009, Bill Kelliher's white Gibson Explorer was equipped with an EMG 81X pickup.

According to the Guitar Geek rig diagram, Bill Kelliher's guitars, with the exception of his white Gibson Explorer, were equipped with Seymour Duncan SH-6B Distortion Humbucker pickups in the bridge position during Mastodon's 2009 tour.

According to this Guitar Geek rig diagram, Bill Kelliher used a white Gibson Explorer fitted with an EMG 85X pickup live with Mastodon in 2009.