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JL Audio Stealthbox Subwoofer Enclosure for 2019-Up Chevrolet Silverado / GMC Sierra 1500 Crew Cab Trucks and 2020-Up 2500 / 3500 Crew Cab Trucks

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JL Audio Stealthbox Subwoofer Enclosure for 2019-Up Chevrolet Silverado / GMC Sierra 1500 Crew Cab Trucks and 2020-Up 2500 / 3500 Crew Cab Trucks

Key Features:

- Pre-Made by JL Audio
- Handles 800 watts RMS
- Single 2-Ohm terminal
- Loaded with Dual JL Audio 12-inch TW3 Subwoofers
- Delivery lead times vary, contact us for details

$3,178.00

Quantity must be 1 or more

SKU: SB-GM-SLVCC4/12TW3

Product Description
Fitment Guide
Customer Reviews

Product Description

Stealthbox® for 2019-Up (Gen 4) Chevrolet Silverado / GMC Sierra 1500 Crew Cab Trucks and 2020-Up 2500 / 3500 Crew Cab Trucks

This 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!

The Hard Data: Contains two 12TW3-D8 subwoofers in a down-firing sealed enclosure. 800 watt power handling. Wired for a 2 ohm load. Installs under rear seat. Will not affect the folding of the rear seat or rear leg room.

Fitment Guide

Customer Reviews

Works Great

Used this to add an amp and sub to the Bose system in my 2020 Chevy Trail Boss. I wasn't sure what version I needed so I called SGS before purchasing. With a Kicker amp I just needed the RCA end. Installation was easy after getting the top of the back seat removed ( Thanks Chevy ). With the RCA tips you don't even have to run a remote turn on wire to the amp. Hook up your RCA, power and ground, run your speaker wire to the sub and enjoy some much needed low end. Quality harness that takes the guess work out. Super friendly and knowledgeable staff. Highly recommend.

Sounds Great

Using this to drive a 12in sub in my 2020 Chevy Trail Boss with the Bose system. Hits hard and clean. Easy install and runs cool. The remote works great with it for adjusting the level. Easy to dial in and adjust to get a great sound from a sub. Would definitely buy again. It said open box when I purchased.... but it hadn't even been taken out of the plastic. SGS is awesome to deal with

Truly Plug 'N Play

I love it when stuff works the way it's supposed to, like this harness adapter. Installed the behind the seat subwoofer enclosure with dual 6.5" subs and this adapter let.me go right from the factory box to the Kicker Key lock without having to do any wiring of any sort. Made installation a breeze and I have mega-bass now

Simply the best

The best harness for the B&O to add an amp and subs. Also being tuned to the truck out of the box makes installation painless and simple.

Very happy with purchase

After DIYing multiple sets of block off plates I finally decided to spend the money on these. Glad I did as the fit was perfect and install was a breeze.im very happy with my purchase.

Impressive sound enhancement

I ordered these block off plates as a first step to upgrading the factory Bose system in my 2021 Denali HD truck. The difference these made on the stock speakers was extremely impressive. Honestly how the stock stereo should have sounded. The only reason I did not give these 5 stars is the fitment wasn’t very good. The covers did cover the large access holes in the doors but didn’t seem to line up very well with the same proportions as factory. Overall worth the money and the upgrade for sure

Amp Mount/ T harness for 2020 Chevy 2500 HD

everything was perfect. No issues

Stealth Focal Flax Evo 7 Channel Fully Active

I bought the 7 ch active system for my 23 Raptor, after soon realizing that the factory B&O Unleashed system was lacking in volume, bass, and sound quality. While researching upgrades, the forum reviews all seemed to lead to the same place - Sounds Good Stereo - as they had fully embraced Ford F-Series trucks. The system arrived exactly 12 weeks after my order. When you see all the work they put in, you’ll understand why the wait is necessary. The system was well-packed to protect the components. It took two and a half days for me to complete the installation, with the sound treatment taking the greatest amount of time. It truly is plug and play. I highly recommend watching the install videos before you begin. It absolutely brings music to life! You won’t believe the difference in sound quality, volume, and bass. One friend said it was the best system they had ever heard in a car or home…and I could only agree!. You’ll hear notes in the music that you didn’t know existed. The sound is very well-rounded with crisp highs and a deep bottom end. The subwoofer box fits nicely behind the rear seat and really bumps. I did not lose any functionality of the rear seat, but did have to relocate the jack. I primarily use Spotify as the source and listen mostly to Rock, but the system performs well with any type of music. Thank you Sounds Good Stereo for doing the research and creating systems of such quality. My recommendation…just buy it!

Worked great on my 2024 Ford Lightning

I used this amp rack on my 2024 Ford Lightning and it turned out great.

Do yourself a favor and buy this

Phenomenal sound. I was amazed at the power of the small subs. Enough bass to bring out the lows when it’s dialed down; and hits hard enough to make you grin like a teenager when you dial it up. Debated building my own custom box… don’t do it. This fits with precision and is custom tuned for the application. The quality you pay for and expect is exactly what you get. Only complaint would be that I received a surface mount remote bass knob, but was expecting a rear mount. Had to get creative to find a lower ledge to mount on, whereas there are plenty of blanks where a rear mount would work. Turns out I like it where it is, so no real complaint.

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JL Audio Stealthbox Subwoofer Enclosure for 2019-Up Chevrolet Silverado / GMC Sierra 1500 Crew Cab Trucks and 2020-Up 2500 / 3500 Crew Cab Trucks

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JL Audio Stealthbox Subwoofer Enclosure for 2019-Up Chevrolet Silverado / GMC Sierra 1500 Crew Cab Trucks and 2020-Up 2500 / 3500 Crew Cab Trucks

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Customer Reviews

Recently Viewed Products

Free Shipping

Financing Available

AUTHORIZED ONLINE RETAILER

IN-HOUSE TECH SUPPORT

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Let customers speak for us