Dimarzio Dp811w 8-String Humbucker Pickup White, Bridge

Recommended for the bridge position.

Technical talk
The long scale length of an 8-string guitar can make the sound of single strings brittle, but the Ionizer 8 Bridge model has a low resonant peak that warms them up, and the high "E" doesn't sound thin, even at the upper frets.

It's also good to have enough output to overdrive an amp without making the sound muddy, and enough headroom to clean up when the volume is turned down.

The Ionizer 8 Neck, Middle, and Bridge Model pickups were designed for Tosin Abasi. When DiMarzio asked Tosin to describe what he wants in a bridge pickup, he said it's all about the midrange. 8-string guitars have an extended bass and treble response, and it's the midrange that needs to feed the bridge position so the sound doesn't fade.