4 hole subwoofer box

Kicker Marine KPX500.1 Powersports Amp & 12" Free Air 4 Ohm Subwoofer Audio Upgrade

Kicker (4) 51MWF124 - MWF 12-Inch Premium Marine Subwoofer (free-air) 4-ohm & 48KXMA12002 Marine Amp Bundle ( Includes LED Remote )

Kicker 48PXA6001 Weatherproof Powersport Mono Amp & (2) 12" 4 Ohm Free-Air Marine Subwoofer ( White Grill )

Kicker 10 Inch KM-Series Marine 4 Ohm Subwoofer 41KMW104LC with Free LED Remote Controller bundle

Kicker (2) 51MWF104 - MWF 10-Inch Premium Marine Subwoofer (free-air) 4-ohm & 48KMA6006 Marine Amp Bundle ( Includes LED Remote )

Kicker (3) 51MWF104 - MWF 10-Inch Premium Marine Subwoofer (free-air) 4-ohm & 48KMA6006 Marine Amp Bundle

Kicker (2) 51MWE104 - MWF 10-Inch Premium Marine Subwoofer (For Enclosures) 4-ohm and 51MWG10W White Grill Bundle

Wet Sounds REVO 12 HP S4 V3 12" High Power 4 Ohm Subwoofer with REVO 12 XS-G-SS GRILLE V3 - Gunmetal & Stainless XS Style Grille and PORTED-12-ENC ...

Kicker 52CVT10 CompVT 10-Inch (250mm) Subwoofer, 4-Ohm Bundle w/ Speaker Wire Bundle

Kicker (2) 45L7R154 L7R 15" Subwoofer, Dual Voice Coil, 4-Ohm & 52GL715 Grill Bundle

Kicker Marine Subwoofer Amplifier Upgrade Kit – KMA800.1 800W Mono Amp, 4 Gauge Wiring Kit & RCA Cables – DIY Pontoon & Boat Audio Add-On for Stron...

Kicker CVT12 CompVT 12-Inch (300mm) Subwoofer, 4-Ohm Bundle

Kicker 48CWRT104 Subwoofer BR-DS10U Add-On & 47KEY5001 Amplifier Bundle Compatible With 2021-2025 Ford Bronco 4-Door Rear Door

Kicker Marine KPX500.1 Powersports Amp & (2) 12" 4 Ohm Subwoofer Audio Upgrade

PowerBass 2 S-12TD Dual 4-Ohm Shallow 12" Subwoofers

Kicker (2) 52CompVR 15-Inch (38cm) Subwoofers, DVC, 4-Ohm w/ Speaker Wire Bundle

ATG Transcend Series 2500 Watt Class D Mono Amplifier with (2) 12" 4 Ohm DVC Subwoofers

Alpine R2-W10D4 Next-Gen 10" R-Series Subwoofer Dual 4-Ohm with KTE-10G.3 Grill

Wet Sounds REVO 10 FA S4 V3 - REVO Series 10" Free Air 4 Ohm V3 Subwoofer, Black and Wet Sounds REVO 10 XW-B GRILLE V3 - Black XW Style Closed Gril...

Kicker 51MWE124 - MWE 12-Inch Premium Marine Subwoofer (Enclosure) 4-ohm & 48KMA6004 Marine Amp Bundle ( Includes LED Remote )

Wet Sounds REVO 12 HP S4 V3 12" High Power 4 Ohm Subwoofer with REVO 12 XS-B-SS GRILLE V3 - Black & Stainless XS Style Grille and PORTED-12-ENC 12"...

ATG Audio Transcend Series 12" Dual 4-Ohm Subwoofer - ATG-TS12X2.4

Kicker (3) 51MWF124 - MWF 12-Inch Premium Marine Subwoofer (free-air) 4-ohm & 51KXMA15001 Marine Amp Bundle

Kicker 45L7R124 L7R 12" Subwoofer, Dual Voice Coil, 4-Ohm & 52GL712 Grill Bundle