JL Audio SB-GM-SLVCC4/12TW3, Stealthbox for 2019-Up (Gen 4) Chevrolet Silverado / GMC Sierra 1500 Crew Cab Trucks
JL Audio SB-GM-SLVCC4/12TW3, Stealthbox for 2019-Up (Gen 4) Chevrolet Silverado / GMC Sierra 1500 Crew Cab Trucks
Not Available for Shiping Outside the United States
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866-859-0896 ChatEmail UsThis generation of Chevrolet/GMC trucks is bringing new levels of interior refinement and technology to the full-size truck segment. Our Stealthbox® enhances all this by adding impressive, high-quality bass without losing any of your precious people space or interior functionality.
The Stealthbox® slips under the truck's rear seat and features two of our revolutionary 12TW3 thin-line subwoofers, giving you absolutely stellar sub-bass impact and quality. We even left a perfect spot in the middle of the enclosure for a clean, hidden amplifier installation!
Built in U.S.A. with Global Components
JL Audio's Miramar, Florida loudspeaker production facility is one of the most advanced in the world.

Returns Policy
You may return most new, unopened items within 60 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund much quicker. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the 'Complete Orders' link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.