SDR-18 | 18" 1,200 Watt Max Power Car Subwoofer - Skar Audio
ZVX-18v2 | 18" 3,200 Watt Max Power Car Subwoofer - Skar Audio
18 Inch Powered Subwoofer Bass Cabinet - 800 Watts RMS | Powered 18 Inch Sub Cab | Powered 18 Inch sub woofer | Powered 18 sub | Power | Active 18 Inch Subwoofer – Seismic Audio
Sundown Audio 18 INCH X-18 v.3 Series 2000W DVC D2 Subwoofer – Sounds Limited
HT-18 v3 - Subwoofers
Amazon.com: Sundown Audio X-18 V.2 D4 18" 1500W RMS Dual 4-Ohm X V.2 Series Subwoofer : Electronics
18" Big Roll Subwoofer Cone 4" VCID | The Lord of Bass
STLF-1804-4 | 18" 450W Raw Woofer Replacement Speaker, 4" Voice Coil, 4-Ohm – Sound Town