Alpine PSS-22WRA Direct-fit complete speaker system for select 2011-18 Jeep Wrangler JK Unlimited models at Crutchfield
Amazon.com: Universal Car Stereo Vented Port Single 12" Alpine S-W12D4 Type S Car Audio Subwoofer Custom Sub Box Enclosure Package New Without Amp : Electronics
Alpine SWE-1042 Type-E 10" 4-ohm subwoofer at Crutchfield
Alpine S-Series 12" Dual-Voice-Coil 4-ohm Subwoofer Black S-W12D4 - Best Buy
Amazon.com: Alpine SWT-12S4 1000 Watt 12" Car Audio Bass Tube Subwoofer Bundle with Amplifier and Amp Kit : Electronics
Alpine S-W10D2 10" 1800w Car Audio Subwoofer Sub+Mono Amp Power Pack Amplifier | Audio Savings
Alpine W10S4 10" 750 W Peak 250 Watt RMS 4-Ohm Car Audio Subwoofer 10 – Car Toys