8 in. Audio Subwoofer Dual 4 Ohm Slim 300 RMS & 600W Maximum - Walmart.com
Amazon.com: Kenwood EXcelon KFC-XW800F 600W Peak (150W RMS) 8" EXcelon Series Shallow-Mount Single 4 Ohm Slim Subwoofer : Electronics
Amazon.com: DR DOUBLE ROCK 8 inch CB08 Underseat Subwoofer Car Audio 600 Watts 8 '' Slim Powered Subwoofer with Built in Amp Active Compact Subwoofer with Amplified+Bass Volume Control Knob : Electronics
Amazon.com: PyleUsa 8" Dual Subwoofer Box System - 400-Watt Slim Mount Truck Audio Subwoofer Box - Rear Vented Design with Built-in Illuminating LED Lights, 2x400 Watts Max Power : Electronics
Amazon.com: Rockville W8T4-S2 8" Shallow Mount 1000w Car Subwoofer+Slim Sub Enclosure Box : Electronics
Bomber 8" Slim High Power - 300 Watts RMS - 4 Ohm Subwoofer | Car Audio BR
8 Inch 800w Car Subwoofer Speaker Active Under Seat Slim Subwoofer Amp Super Bass Stereo Speaker Full Frequency Amplifier Audio - Subwoofers - AliExpress