---
product_id: 4544273
title: "QPower Dual 12in Underseat Downfire Subwoofer Enclosure, Sub Box Compatible with Chevy Silverado XCab and GMC Sierra XCab Classic 1996-2006"
brand: "q power"
price: "VT135874"
currency: VUV
in_stock: true
url: https://www.desertcart.vu/products/4544273-qpower-dual-12in-underseat-downfire-subwoofer-enclosure-sub-box-compatible
store_origin: VU
region: Vanuatu
---

# Custom fit for '99-06 GMC/Chevy Ext Cab Dual 12" subs for earth-shaking bass 5/8" MDF solid build for durability QPower Dual 12in Underseat Downfire Subwoofer Enclosure, Sub Box Compatible with Chevy Silverado XCab and GMC Sierra XCab Classic 1996-2006

**Brand:** q power
**Price:** VT135874
**Availability:** ✅ In Stock

## Summary

> 🎶 Transform your truck into a bass beast with precision-engineered power!

## Quick Answers

- **What is this?** QPower Dual 12in Underseat Downfire Subwoofer Enclosure, Sub Box Compatible with Chevy Silverado XCab and GMC Sierra XCab Classic 1996-2006 by q power
- **How much does it cost?** VT135874 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/4544273-qpower-dual-12in-underseat-downfire-subwoofer-enclosure-sub-box-compatible)

## Best For

- q power enthusiasts

## Why This Product

- Trusted q power brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Dual Chamber Design:** Optimizes airflow and sound clarity for the deepest, cleanest bass hits.
- • **Downward Firing Power:** Directs booming bass exactly where it counts for immersive sound.
- • **Charcoal Carpet Finish:** Blends sleekly with your truck’s interior for a stealthy, professional look.
- • **Precision Engineered Fit:** Seamlessly integrates under your rear seats for a factory-level install.
- • **Robust 5/8" MDF Construction:** Ensures long-lasting durability and vibration-free performance.

## Overview

The Q Power GMC Chevy Silverado Ext Cab '99-06 Dual Underseat Two 12" Subwoofer Box is a custom-designed, downward-firing enclosure built from durable 5/8" MDF. Tailored specifically for 1999-2006 GMC and Chevy Extended Cab trucks, it features a dual chamber design and charcoal carpet finish, delivering deep, clear bass while fitting perfectly under rear seats.

## Description

Q Power Dual 12-Inch Underseat Subwoofer Box, Features 0.95 Cubic Feet of Airspace, Compatible with 1999–2006 GMC and Chevy Silverado Ext Cab Trucks

## Features

- Brand New **Q-Power 12"** Custom GMC/Chevy Ext Cab '99-06 Subwoofer Box
- **PLEASE NOTE: This Sub Box is made to fire downward**
- Designed and Built for the Deepest Bass
- 5/8" MDF Construction
- Dual Chamber Design

## Product Details

- **Brand:** Q Power
- **Speaker Maximum Output Power:** 500 Watts
- **Connectivity Technology:** wired
- **Audio Output Mode:** Stereo
- **Mounting Type:** Underseat Mount

## Images

![QPower Dual 12in Underseat Downfire Subwoofer Enclosure, Sub Box Compatible with Chevy Silverado XCab and GMC Sierra XCab Classic 1996-2006 - Image 1](https://m.media-amazon.com/images/I/51cMMz-ivtL.jpg)

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**Shop now:** [https://www.desertcart.vu/products/4544273-qpower-dual-12in-underseat-downfire-subwoofer-enclosure-sub-box-compatible](https://www.desertcart.vu/products/4544273-qpower-dual-12in-underseat-downfire-subwoofer-enclosure-sub-box-compatible)

---

*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-06-05*