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Ground Shaker  GS-STGM312B New

Black 12" Triple Sealed Enclosure for 1999-2006, GMC Sierra Regular-Cab Truck

Item #99060

Condition:   Brand New

Product Highlights

  • Black 12" Triple
  • Sealed Enclosure for
  • 1999-2006, GMC
  • Sierra Regular-Cab
  • Truck

  Free 2-Years Warranty Included!
60 DAYS Returns Accepted.
FREE Lifetime Tech Support.
FREE Shipping (No Minimum).
60 DAYS Price change protection.

$295.00

Reg. Price $345.00  Save $50.00
  Free 2-Years Warranty Included!

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Ground Shaker Authorized Dealer

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Ground Shaker GS-STGM312B Black 12" Triple Sealed Enclosure for 1999-2006, GMC Sierra Regular-Cab Truck

We are an Ground Shaker authorized dealer so you get up-to-date, fully warrantied products. Shipping is free to the lower 48 states on everything you order!

What's Inside?
  • • 12" Black Triple Sealed Enclosure
  • • Owner's Manual
Ground Shaker
Tailgate-Ready Bass, Built to Last

Designed for large subwoofers, this enclosure delivers earth-shaking lows that make every drive feel like a live concert. Wrapped in tough, truck-ready carpet, it shields your interior while keeping a clean, showroom-quality appearance. Precision-sealed with premium Titebond materials, it delivers deep, punchy bass with unmatched clarity—no rattles, just pure power.

Compact Fit, Massive Impact

Maximize your bass without crowding your cabin with a smart, space-saving design that tucks perfectly behind your seat. Installation is a breeze with fast, secure spring-loaded terminals, letting you enjoy powerful, crystal-clear sound in minutes—no hassle, just pure audio excitement.

 

Ground Shaker
Ground Shaker
Rugged Bass, Designed for the Ride

Crafted from 5/8" thick MDF, this enclosure stands up to heavy bass while keeping every note tight and clear. Its forward-firing design delivers immersive, high-impact sound straight into your cabin, turning every drive into an audio experience. Built with American trucks in mind, it fits seamlessly while maintaining peak performance on the road.


SPECIFICATIONS


  • Speaker Size : 12 Inches
  • Number Of Subwoofers : 3
  • Construction : 5/8 MDF
  • Volume : 2.40 Cu. Ft.
  • Enclosure Type : Sealed
  • Vehicle Make : GMC

FEATURES


Features:

  • Massive 11.125" Cutout for Thunderous Bass: Engineered for big subwoofers, it delivers ground-shaking low frequencies that turn every drive into a tailgate concert.
  • Rugged Yet Refined Finish: Carpeted with durable trunk-liner material, it protects your truck interior while keeping a sleek, showroom-ready look.
  • Precision-Sealed for Maximum Punch: Every joint is glued and sealed with high-quality Titebond materials to ensure crisp, deep bass without rattles.
  • Space-Smart Design: Fits neatly behind your seat, giving you huge sound without taking over cabin space.
  • Quick-Connect, Stress-Free Wiring: Spring-loaded terminals make installation fast, simple, and worry-free.
  • Built to Handle Heavy Bass Loads: 5/8" thick MDF ensures durability and maintains optimal acoustic performance over time.
  • Forward-Firing Sound Projection: Bass is directed straight into the cabin, creating immersive, high-impact audio for any ride.
  • American Truck Ready: Sized for real-world installations, designed to fit most truck cabins while maintaining peak performance.

 

Specifications:

  • Cutout Diameter: 11 1/8"
  • Air Volume: 2.40 FT³
  • Mounting Depth: 7"
  • Note: Subwoofers with wide baskets/magnets may not fit
  • Height: 16 1/4"
  • Length: 48 1/4"
  • Top Depth: 5 1/2"
  • Bottom Depth: 9 1/2"
  • 5/8" High-Quality MDF Wood
  • Carpeted with Durable Trunk Liner Finish
  • Sealed with High-Quality Titebond Silicone
  • Glued with High-Quality Titebond Wood Glue
  • 1 Spring-Loaded Terminal
  • Fits Behind Seat
  • Forward Firing Design
  • Center Console May Need to Be Removed During Installation
  • UPC:
  • Weight: 44
  • Authorized Internet Dealer
Warranty: 2 Year(s) Warranty.
This item is accompanied by a manufacturer's warranty. If it is found to be defective, it may be returned to OnlineCarstereo.com for replacement within 2 Year(s) from the original date of purchase with proper return authorization.

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