Your search for custom car speaker box returned the following:

Custom-fit fiberglass enclosure with two 10" W1v2 subwoofers Fits 2005-up Toyota Tacoma Double Cab

LOW STOCK

4 people say 

• Stealthbox® enclosure fits behind rear passenger side seat
• two 10" W1v2 subwoofers
• power handling: 100-600W RMS
  

Custom-fit fiberglass enclosure with two 13" TW5-3 subwoofers — fits 2006-up BMW 3-Series

LOW STOCK

• Stealthbox® enclosure fits in the trunk against the back seats
• two 13" 3-ohm 13TW5-3 subwoofers
• power handling: power handling: 600-1,200 watts RMS

Custom-fit fiberglass enclosure with 13" TW5-3 subwoofer — fits 2009-up Ford F-150 SuperCrew (Black)

LOW STOCK

• black Stealthbox® enclosure fits under the driver side of the rear bench seat
• one 13" 13TW5-3 subwoofer
• power handling: 100-600W RMS

Custom-fit fiberglass enclosure with two 10" W3v3 subwoofers Fits 2003-up Nissan 350Z hatchback

LOW STOCK

3 people say 

• black Stealthbox® enclosure fits ahead of rear strut brace
• two 10" W3v3 subwoofers
• power handling: 200-1,000W RMS
  

Custom-fit fiberglass enclosure with two 10" W3v3-4 subwoofers Fits 2007-Up Chevrolet and GMC Crew Cab trucks (Ebony)

LOW STOCK

2 people say 

• ebony Stealthbox® enclosure installs under the rear seat on the driver's side
• two 10" W3v3-4 subwoofers wired for 2-ohms
• power handling: 1000 watts RMS
  

Custom-fit truck enclosure with shallow-mount 13.5" sub — fits 2007-up Toyota Tundra Crew Max

LOW STOCK

4 people say 

• black Stealthbox® enclosure fits behind the rear bench
• one 13.5" 13TW5-3 subwoofer
• power handling: 100-600W RMS

Custom-fit fiberglass enclosure with 12" W3v3 subwoofer Fits 2001-2003 Honda Civic Coupe

LOW STOCK

• gray Stealthbox® enclosure fits in passenger side rear corner of trunk
• one 12" W3v3 subwoofer
• power handling: 100-500W RMS
  

Custom-fit fiberglass enclosure with 10" W3v3 subwoofer — fits 2005-up Mazda 3 Hatchback

LOW STOCK

• Stealthbox® enclosure fits in the spare tire well under the spare tire
• one 10" W3v3 subwoofer
• power handling: 100-500W RMS

Custom-fit fiberglass enclosure with 10" W6v2 subwoofer Fits 1999-2005 Chevrolet Silverado / GMC Sierra Extended Cab (with full-bench rear seat) (2003-2005, Pewter)

LOW STOCK

• pewter Stealthbox® enclosure fits passenger side underneath the rear full-bench seat
• one 10" W6v2 subwoofer
• power handling: 150-600W RMS
  

Custom-fit ported fiberglass enclosure with 10" W3v3 subwoofer Fits 2004-up Ford F-150 SuperCab and SuperCrew trucks (Tan)

LOW STOCK

5 people say 

• tan Stealthbox® enclosure fits under driver side rear seat
• one 10" W3v3 subwoofer
• power handling: 100-500W RMS
  

Custom-fit fiberglass enclosure with 8" W7-3 subwoofer Fits 2008-up Ford SuperDuty Crew Cab (Black)

LOW STOCK

• black Stealthbox® designed enclosure fits inside factory center console
• one 8" W7-3 subwoofer
• power handling: 150-500W RMS
  

Custom-fit fiberglass enclosure with 10" W6v2 subwoofer Fits 1999-2005 Chevrolet Silverado / GMC Sierra Extended Cab (with full-bench rear seat) (2003-2005, Tan)

LOW STOCK

• tan Stealthbox® enclosure fits passenger side underneath the rear full-bench seat
• one 10" W6v2 subwoofer
• power handling: 150-600W RMS
  

Driver side custom-fit enclosure with 10" W6v2 subwoofer Fits 1999-2005 Chevrolet Silverado / GMC Sierra Extended Cab (with full-bench rear seat) (2003-2005, Pewter)

LOW STOCK

5 people say 

• pewter Stealthbox® enclosure fits driver side underneath the rear full-bench seat
• one 10" W6v2 subwoofer
• power handling: 150-600W RMS
  

Custom-fit fiberglass enclosure with 10" W3v3-4 subwoofer — fits 2003-2009 Toyota 4Runner (Taupe)

LOW STOCK

2 people say 

• taupe Stealthbox® enclosure installs inside the passenger side rear cargo area
• one 10" W3v3 4-ohm subwoofer
• power handling: 100-500W RMS
  

Custom-fit enclosure with 10" W3v3-2 sub — fits 1999-06 Chevrolet / GMC Full-Size SUV and truck models (with 40/20/40 split front bench seat) (2003-2006, Dark charcoal)

LOW STOCK

• dark charcoal Stealthbox® enclosure replaces front center seat cushion
• one 10" W3v3 4-ohm subwoofer
• power handling: 100-500W RMS
  

Custom-fit enclosure with 10" W3v3-2 sub — fits 1999-06 Chevrolet / GMC Full-Size SUV and truck models (with 40/20/40 split front bench seat) (1999-2002, Graphite)

LOW STOCK

• graphite Stealthbox® enclosure replaces front center seat cushion
• one 10" W3v3 4-ohm subwoofer
• power handling: 100-500W RMS
  

Custom-fit enclosure with 10" W3v3-2 sub — fits 1999-06 Chevrolet / GMC Full-Size SUV and truck models (with 40/20/40 split front bench seat) (1999-2002, Blue)

LOW STOCK

• blue Stealthbox® enclosure replaces front center seat cushion
• one 10" W3v3 4-ohm subwoofer
• power handling: 100-500W RMS
  

Custom-fit fiberglass enclosure with 10" W3v3 subwoofer Fits 2006-up Honda Ridgeline (Gray)

LOW STOCK

• gray Stealthbox® enclosure fits under the passenger side rear seat
• one 10" W3v3 subwoofer
• power handling: 100-500W RMS
  

Custom-fit fiberglass enclosure with 10" W3v3 subwoofer Fits 2002-up Ford Explorer (with 4 doors) (Graphite)

LOW STOCK

3 people say 

• graphite Stealthbox® enclosure fits in driver side rear cargo area
• one 10" W3v3 subwoofer
• power handling: 100-500W RMS
  

Custom-fit fiberglass enclosure with 12" W3v3-2 subwoofer — fits 2009-up Toyota Corolla

LOW STOCK

• fits in driver side rear corner of trunk
• one 12" W3v3 subwoofer
• power handling: 100-500W RMS