The Seymour Duncan SRB-1B Rickenbacker Bass Bridge Humbucker Pickup adds output and hum cancelling to 4000 series RIC basses. The pickup uses Alnico 5 bar magnets to add power and sustain for those wanting a bigger push without tonal colouration, the result is slightly larger than the stock bridge pickup (so the original chrome mounting ring cannot be used with it), Seymour Duncan provides a special phenolic mounting ring for the pickup. The pickup features a four conductor hookup wire to give you access to parallel and split wiring options for added versatility and is wax potted for squeal free operation. Twin Town Guitars does guitar repairs on instruments, electronics, and Plek work. We install pickups! • MFSKU SRB-1b • UPC 800315003877