Stage 2 • Ported • Loaded
Hard-Hitting Under-Seat Bass for 2019–2024 GM 1500 Crew Cab
This isn’t a prefab box. It’s a CB Customs Stage 2 ported under-seat enclosure built specifically for the 2019–2024 Silverado/Sierra 1500 crew cab and loaded with (4) Audio Dynamics 3008s.
It’s designed to play deep, get loud, and still stay clean — with the Stage 2 acrylic panels on the front and sides so it looks as good as it hits.
Fitment
Built Specifically for Silverado / Sierra 1500 Crew Cab
- Designed for 2019–2024 Silverado/Sierra 1500 Crew Cab under-seat fitment.
- 3D-modeled around factory floor + seat geometry for a tight OEM-plus fit.
- Clean install layout that keeps the truck looking right — not hacked together.
- Finished like a show piece, built to be daily-driven.
What’s Included
Everything That Comes With Your Stage 2 Loaded Setup
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Stage 2 Ported Enclosure (GM 1500)
Ported under-seat enclosure tuned for hard-hitting output and deep lows — made specifically for the GM 1500 crew cab.
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Loaded with (4) Audio Dynamics 3008s
Four 8" subs built for real power and real output — this setup moves air and stays clean doing it.
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Stage 2 Acrylic Panels (Front + Sides)
Signature Stage 2 look: custom acrylic panels on the front and sides for a premium OEM-plus finish you can show off.
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Pre-Wired, Loaded & Ready to Go
Subs mounted, ported enclosure, wired, and tested before it leaves our shop — ships ready to drop in.
Does not include amplifier, wiring kit, or DSP unless your listing/package includes it separately.
Does not include amplifier, wiring kit, or DSP unless your listing/package includes it separately.
Performance
How It Sounds
This is the setup for guys who want the truck to feel different when it hits. It plays low, stays tight, and gets aggressive without sounding muddy.
The enclosure is wired to a 1Ω final load and we recommend feeding it 3,000–4,000W RMS for the best mix of output + control. Our go-to amps for this setup are the Audio Dynamics X3K.1 or Audio Dynamics 4K.1.
If you want everything matched and ready (amp, wiring, rack, install support), we can build a full package around this enclosure.
Built by CB Customs
Craftsmanship, Lead Time & Warranty
- Built in Weatherford, Texas — cut, assembled, upholstered, and finished in-house.
- Pre-wired & quality checked — wired and inspected before shipping.
- Built to order — lead time confirmed after purchase; tracking sent when it ships.
- Lifetime craftsmanship warranty on the enclosure itself.
- Support from the builder — questions before/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.