Stage 1 Box Downfire 2007-2018

Regular price$699.00
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  • Lifetime warranty
  • Free worldwide shipping
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Stage 1 Box Downfire 2007-2018
Stage 1 Box Downfire 2007-2018
Stage 1 Box Downfire 2007-2018
Stage 1 Box Downfire 2007-2018
Stage 1 Box Downfire 2007-2018

Our Stage 1 enclosure offers clean, reliable bass in a no-nonsense, OEM-style design. This downfire box is built specifically to fit 2007–2018 Chevy and GMC Crew Cab trucks, delivering solid performance while keeping a factory-clean appearance under the rear seat.

Ideal for daily use, this box provides a simple upgrade in sound without unnecessary flash — unless you choose to add it.


Standard Features:

  • Premium carpet or black vinyl wrap

  • ¾” MDF construction with internal bracing

  • Rounded corners and flush-mount design for a clean look

  • Downfire subwoofer layout for stealth and protection

  • Sealed or ported (based on subwoofer and tuning preference)


🔧 Optional Upgrades:

  • Color-matched vinyl wrap

  • Engraved acrylic inserts (front or side)

  • Integrated LED lighting behind acrylic


📐 Fitment & Specs:

  • Fits: 2007–2013 Silverado / Sierra 1500 Crew Cab

  • Fits: 2014–2018 Silverado / Sierra 1500/2500/3500 Crew Cab

  • Designed for maximum airspace without lifting the seat

  • Requires removal of OEM under-seat storage (if equipped)

  • Not compatible with thick floor liners under the enclosure

  • Seatlift might be required depending on sub quantity and size

🛠️ Custom-built to order. Delivery times vary — contact us for current lead times.
Subwoofers not included. Due to the custom nature of this product, all sales are final.

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