Rockville

W8K9 8" Dual 4-Ohm Subwoofers 2-Pack + Dual 8" Chevy/GMC Crew Cab Box Bundle

Name: W8K9 8" Dual 4-Ohm Subwoofers 2-Pack + Dual 8" Chevy/GMC Crew Cab Box Bundle
Brand: Rockville
SKU: (2) W8K9D4+REC110+K2
Price: 419.85 USD
Availability: InStock

Vehicle-Specific Dual 8" Bass Kit, 2 Subs, Underseat 0.8 cu ft/ea, Enclosure, Install Hardware

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$419.85

$419.85 ~~$0.00~~

Features

Two 8" dual 4-ohm subs, 500W RMS each
Underseat dual 8" ported box for GM/Chevy Crew Cab
122 oz magnets, cast aluminum baskets
Includes 14 AWG wire, screws, terminals
Tuned to 35 Hz for deep, accurate bass

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What's Included in the box

(2) Rockville W8K9D4 8" subwoofers
Dual 8" GM/Chevy Crew Cab ported enclosure
Install kit: 20 screws, 20' 14 AWG wire, 4 spade terminals

SKU: SKU: (2) W8K9D4+REC110+K2

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Product Description

This premium underseat bass package blends precision engineering with truck-ready design. Two K9 8" subwoofers deliver muscular, controlled low end, while the ported, bed-liner–finished enclosure is tailored for 2007–2024 GM/Chevy Crew Cab. The assembly optimizes air volume and tuning at 35 Hz for deep, resonant lows that complement factory interiors without sacrificing space. A complete wiring hardware kit streamlines installation. The result is refined, powerful bass that enhances every drive with a sophisticated, full-range soundstage.

This Bundle Includes

W8K9D4

Experience powerful, clear bass with the Rockville W8K9D4 K9 Series 8" Dual 4-Ohm Car Subwoofer. Designed for high performance and visual appeal, it fits sealed or vented enclosures, offering robust sound and lasting durability. Premium materials and thoughtful design make it ideal for elevating your car audio environment.

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REC110

The REC110 is a 2-hole 8" ported subwoofer enclosure tailored for 2007+ GMC and Chevy Crew Cabs. Designed for underseat, front-firing installation, it delivers deep, powerful bass and a refined look. The rugged bed liner finish and precise tuning make it a standout choice for premium truck audio.

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K2

The K2 Dual Subwoofer Enclosure Installation Kit includes premium 14 AWG wire, 20 wood screws, and 4 spade terminals for flawless installation. Designed for car, home, or studio use, each component is expertly selected to deliver secure mounting and pure audio, elevating your sound system’s performance and style.

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Features

Engineered Low-End Authority
35 Hz–tuned ported enclosure and dual 8" drivers create deep, musical bass that fills the cabin without boom.
High-Efficiency Motor Design
Double-stacked 122 oz magnets and ultra-stiff cones convert amplifier power into clean output with minimal distortion.
Thermal Stability
2.5" 4-layer ASV voice coils with USA OFC windings withstand heat for sustained, high-output listening.
Truck-Ready Construction
¾" MDF, bed liner finish, and bracing resist flex and wear for consistent performance under seats.
Ready-To-Install Package
Includes speaker wire, screws, and terminals for a clean, secure hookup to your amplifier.

W8K9 8" Dual 4-Ohm Subwoofers 2-Pack + Dual 8" Chevy/GMC Crew Cab Box Bundle

Technical Specifications

Type Dual 8" underseat subwoofer and enclosure bundle
Compatible vehicles 2007–2024 GM/Chevy Crew Cab (1500/2500HD/3500HD)
Enclosure air space 0.8 cu ft per sub
Enclosure tuning 35 Hz
Sub impedance (each) Dual 4 ohm
Voice coil diameter 2.5 in
Magnet weight (each) 122 oz
Cutout diameter 7.32 in
Mounting depth 5.91 in (sub), 11.25 in (box max)
Sensitivity 81.2 dB
Frequency response 48–800 Hz (sub)
Weight Sub: 18.74 lb each (approx.)
Dimensions Box: 32.5" x 17.25" x 16.25" (approx.)

W8K9 8" Dual 4-Ohm Subwoofers 2-Pack + Dual 8" Chevy/GMC Crew Cab Box Bundle