Ghost by Graph Tech Hipshot 4 String Bass Chrome PN-8370-C4

This a great combination that will really expand your tonal palate.
This bridge will work with any of the GHOST bass Acousti-Phonic preamp kits.

The GHOST pickups go down a lot lower and higher in frequency response than magnetic pickups and open up a whole new world. Switch from your magnetic to ghost or a blend of both, in stereo or mono when you are using the Acousti-Phonic Bass preamp kit.

GHOST loaded Hipshot "A" style four-string bass bridge available in Chrome, Nickel, Black, or Gold.

Click to see GHOST HipShot Bridge Measurements (opens the link in a new tab).