ESP Z321



Out of stock

ESP Z321


Please use the subwoofer customizer via the US Website to personalize your sub before placing the order.



Images are for reference only – actual product may vary.



In early 2005 the first-ever iteration of the Z motor was launched. It forever changed the way people thought of a high-performance subwoofer and pushed the limits of car audio to new extremes. Over the years, many versions of Zs have been produced and this spirit of experimentation has driven us to constantly improve and innovate.




Speaker Size (In): 21
Watts RMS: 1000 – 4000
Watts Peak: 8000
Impedance: D0.5 / D1 / D1.5 / D2
VCD (In): 3.35
Piston Diameter (In): 18 1/4
Frame OD (In): 21 5/16
Frame OD w/ Gasket (In): 21 5/16
Mounting Diameter (In): 19 1/4
Mounting Depth (In): 13 1/8
Motor Diameter (In): 9
Motor Diameter (MM): N/A
Motor Depth (In): 5 5/8
Woofer Displacement (CuFt): 0.52
Woofer Displacement (Liters): N/A
Ported Enclosure (CuFt): 6.0 – 8.0
Shipping Weight (Lbs): 76