Directed Audio Xtreme 104SX 10" 4-ohm subwoofer at Crutchfield
Hifonics ZXT18D2 Zeus Extreme Subwoofer 46 CM (18 ") 8000 Watt Zxt ( Extreme) | eBay
Extreme UTV Wireless Subwoofer | ECOXGEAR
Subwoofers – Extreme Car Audio Inc.
BOSS Audio Systems CXX104DVC Chaos Extreme Series 10 Inch Car Audio Subwoofer - 1000 Watts Max, Dual 4 Ohm Voice Coil, Sold Individually, For Truck Boxes and Enclosures, Hook Up To Amplifier - Walmart.com
Hifonics Zxt 18D2 Zeus Extreme Subwoofer 46 CM (18 ") 8000 Watt Zeus Zxt Extreme | eBay
Seas Extreme L22ROY2-08 8" Subwoofer- 8 ohm
www.colossalsoundsusa.com Extreme EX-12 12" 750w Car Audio Subwoofer -
NeweggBusiness - Car Subwoofer by HippoXL122 - SPL Extreme Bass Woofer - 12 Inch Car Audio 4,000 Watt HippoXL Series Competition Subwoofer, Dual 2 Ohm, 3 Inch Voice Coil. Sold Individually
Xtreme Audio 154SX (dei-154sx) 15" Single 4 ohm Xtreme Series
Car Subwoofer by Massive Audio HippoXL122R - SPL Extreme Bass Woofer - 12 Inch Car Audio 6,000 Watt HippoXL Series Competition Subwoofer, Dual 2 Ohm, 4 Inch Voice Coil. Sold Individually : Amazon.in: Electronics