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The Perfect (4) Polk Audio 8" Subwoofers+sub Box Enclosure For 2007- Current Gm Crew Cab System [mEjAXDn9]

$49.99 $159.99 -69%

4 Polk Audio 8" Subwoofers + Sub Box Enclosure for GM Crew Cab Experience the ultimate in car audio performance with this comprehensive package, designed specifically for 2007-Current GM Crew Cab models. This package includes four high-performance Po

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The Perfect (4) Polk Audio 8" Subwoofers+sub Box Enclosure For 2007- Current Gm Crew Cab System [mEjAXDn9]

4 Polk Audio 8" Subwoofers + Sub Box Enclosure for GM Crew Cab

Experience the ultimate in car audio performance with this comprehensive package, designed specifically for 2007-Current GM Crew Cab models. This package includes four high-performance Polk Audio MM842SVC 8” subwoofers, each boasting a 900-watt peak power handling and a 300-watt continuous power handling, ensuring a deep, punchy bass experience. Pair these subs with the Rockville REC120 Quad 8" Ported Sub Box, which is tailored to enhance the sound quality and provide a seamless fit in your vehicle.

Polk Audio MM842SVC Subwoofers: Premium Bass Performance

The MM842SVC subwoofers are engineered with Dynamic Balance technology, resulting in a premium upgrade from your factory audio setup. With advanced features like a high excursion bump stack motor structure, glass fiber formers, and high-temp Conex spiders, these subwoofers deliver thunderous bass and enhanced sonic detail. Their IP56 rating ensures they are ultra-marine certified, making them resistant to corrosion and ideal for both on-road and off-road adventures. The package also includes stainless steel mounting hardware for a secure installation.

Rockville REC120 Sub Box and Installation Kit: Complete Solution

The Rockville REC120 Quad 8" Ported Sub Box is constructed from 3/4" MDF and finished with bed liner for durability and a sleek look. This enclosure is designed to maximize the sound quality of the Polk Audio subwoofers, with a tuning frequency of 33Hz for deep, resonant bass. The included installation kit features 20 feet of 14 AWG blue speaker wire, 20 drywall wood screws, and 4 spade terminals, providing everything you need to install the subwoofers and wire them to your amplifier. This package is a complete solution for anyone looking to upgrade their car audio system with high-quality components and professional installation tools.

What Our Customers Say

January 18, 2026

Absolutely no complaints!

So good, so simple, and so very, very, very effective.

- Dylan H..

January 18, 2026

Absolutely no complaints!

This has made a significant and positive impact.

- Zebadiah Z..

January 18, 2026

Absolutely no complaints!

A fantastic item with a truly, truly great design.

- Tomos F..

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