Seymour Duncan 11402-10 SRB-1b Humbucker for Rickenbacker BridgeRickenbacker replacement pickups add output and hum cancelization to 4000 series Ric basses. Great for all styles of music! We moved the Rickenbacker bass tone from great to downright amazing! The benefit of the bridge replacement pickup is the added power and sustain for those wanting a bigger push without tonal coloration. Alnico 5 magnets are the force behind this pickup, which is slightly larger than the stock bridge pickup, so the original chrome