Stage 2 • Sealed • Loaded
Stage 2 Under-Seat Subwoofer Enclosure Loaded With (2) Wāvtech Thin Pro 12"s
This is the cleanest way to add real bass to your GM truck without ruining the interior. Our Stage 2 sealed under-seat enclosure is built for OEM-plus fitment and comes loaded with (2) Wāvtech Thin Pro 12" subs — already mounted, pre-wired, and ready to drop in.
Stage 2 is one of our most popular options because it looks clean during the day, then the acrylic + addressable lighting makes it stand out at night without needing huge viewing windows.
Fitment
Built Specifically for 2019–2026 GM Trucks
- Fits 2019–2026 Chevy Silverado and GMC Sierra Crew Cab trucks.
- 3D-modeled around factory floor + seat geometry for a tight OEM-plus install.
- No seat lift required — rear seat functionality stays completely factory.
- Designed to look intentional under the seat — not like a generic prefab box shoved underneath.
What’s Included
Everything That Comes With Your Stage 2 Loaded Setup
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Stage 2 Sealed Enclosure (GM)
Sealed under-seat enclosure built specifically for GM crew cab trucks for tight,
controlled bass with a clean OEM-plus fit.
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Loaded With (2) Wāvtech Thin Pro 12" Subs
Slim 12s that hit hard and sound clean in a truck-friendly under-seat setup —
already mounted and wired.
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Front Integrated Acrylic Panels
Signature Stage 2 styling with clean integrated acrylic for a premium finish
without oversized viewing windows.
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Optional Side Acrylic Add-On
Want more visual impact? Add the side acrylic option for a more finished,
high-end custom look under the seat.
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Addressable LED Lighting (Any Color)
Acrylic lighting is addressable — set it to any color
and match your truck or theme.
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Black Vinyl Standard (Color Match Optional)
Stage 2 comes standard in clean black vinyl.
You can upgrade to color-matched vinyl to match your interior.
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Plug-and-Play Terminal Cup
Includes our custom 3D-printed CB Customs terminal cup so wiring stays clean,
reliable, and easy to connect.
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Pre-Wired, Loaded & Ready
Subs mounted, enclosure wired, and checked before it leaves our shop —
built to install clean and work right.
Performance
How It Sounds
This setup is built for daily driving — clean bass, tight response, and significantly more output than a generic prefab setup. It sounds good at low volume and gets aggressive when you turn it up.
For best results we recommend a quality mono amplifier like the Wāvtech Link1500.1 (or comparable) to power it properly. If you need help selecting an amp and wiring setup, just message us.
And the best part: no seat lift required — you get a real system without sacrificing factory functionality.
Built by CB Customs
Craftsmanship, Lead Time & Warranty
- Hand-built in Weatherford, Texas — cut, assembled, upholstered, and inspected in-house.
- Pre-wired & quality checked — loaded, wired, and verified before shipping/pickup.
- Built to order — lead time confirmed after purchase; tracking sent when shipped.
- Lifetime craftsmanship warranty on the enclosure itself.
- Real support — if you have questions before or after ordering, we’ve got you.
Questions?
Still not sure which stage or setup to go with?
Shoot us a text or call at (682) 516-3358, email sales@cbcustoms.net, or reach out below with your truck year and goals.