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  1. Home
  2. MTX Store
  3. Discontinued MTX Car Audio & Electronics
  4. Discontinued MTX Car Subwoofers
  5. Discontinued MTX Custom-fit Subwoofer Boxes
  6. Discontinued MTX MTX Thunderform Boxes

Discontinued MTX MTX Thunderform Boxes for your 1983 CJ5 close

Transform your vehicle's sound with MTX Thunderform Boxes, designed for a perfect fit.

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RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
Series
Many brands group their products into series or lines of products to help customers know the level of quality (good, better, best for example). You can filter by series and the brand using our guided browsing.
Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
Top-Mount Depth (Mounting Depth)
The depth when installed on top of the mounting surface. Measured from the bottom of the speaker's magnet to the bottom of the mounting holes on the rim of the speaker.
Voice Coil(s)
Dual voice coil subs have more wiring flexibility than single voice coils subs; however, single voice coil subwoofers provide easier hookup options for wiring multiple subwoofers in parallel or series. You may also run a dual voice coil (DVC) sub in parallel, series, or combination. A quad voice coil has four voice coils and is equal to two dual voice coil subwoofers as far as wiring goes.
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
Subwoofer Design
This is the design of the subwoofer or the opening of the subwoofer enclosure. Each design has it's own benefits, whether it is a square, circle, or oval.

Round/Circle: This is the typical and common subwoofer design. They have a round cone and are a circle in design.

Square: These woofers are able to achieve a greater cone area in a smaller space. Because of the greater surface area, some square subwoofers will be louder than a round subwoofer of the same size.

Sensitivity
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
  Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
Xmax (millimeters)
Typically measured in millimeters, the Xmax value is the measure of a speaker cone's maximum excursion in one direction while maintaining a linear behavior.
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MTX Audio Thunderform JGC10-T45 (Black, Loaded)

Jeep Grand Cherokee 1993-1998, 10" 4 ohms Loaded Vehicle Specific Thunderform Subwoofer Enclosure

JGC10-T45 big DISCONTINUED
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MTX Audio Thunderform JGC10-T45 (Black, Loaded)

Jeep Grand Cherokee 1993-1998, 10" 4 ohms Loaded Vehicle Specific Thunderform Subwoofer Enclosure

10" Loaded Vehicle Specific MTX Thunderform Sealed Subwoofer Enclosure • For Jeep Grand Cherokee 1993-1998 • Loaded with Thunder4500 Subwoofer • 450W Max • 225W RMS • 4 ohm • Carbon Filled Polypropylene Cone

No Fit Icon Doesn't fit your CJ5

10" Loaded Vehicle Specific MTX Thunderform Sealed Subwoofer Enclosure • For Jeep Grand Cherokee 1993-1998 • Loaded with Thunder4500 Subwoofer • 450W Max • 225W RMS • 4 ohm • Carbon Filled Polypropylene Cone

MTX Audio Thunderform FRP20AC-TN (Charcoal, Amplified)

Ford F-150 Regular Cab 1997-2003, Amplified 2 10" 4 ohms Vehicle Specific Thunderform Sub Enclosure

FRP20AC-TN big DISCONTINUED
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MTX Audio Thunderform FRP20AC-TN (Charcoal, Amplified)

Ford F-150 Regular Cab 1997-2003, Amplified 2 10" 4 ohms Vehicle Specific Thunderform Sub Enclosure

• Amplified Dual 10" Loaded MTX Thunderform Sealed Subwoofer Enclosure
• For Ford F-150 Regular Cab 1997-2003
• Loaded with 10" Terminator Series Subwoofers
• 800W Max
• 400W RMS
• 4 ohm

No Fit Icon Doesn't fit your CJ5

1

• Amplified Dual 10" Loaded MTX Thunderform Sealed Subwoofer Enclosure
• For Ford F-150 Regular Cab 1997-2003
• Loaded with 10" Terminator Series Subwoofers
• 800W Max
• 400W RMS
• 4 ohm

MTX Audio Thunderform JWTJ97T20A-T45 (Tan, Amplified)

Jeep Wrangler TJ 1997-2006, Amplified 2 10" 4 ohms Loaded Vehicle Specific Thunderform Subwoofer Enclosure

JWTJ97T20A-T45 big DISCONTINUED
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MTX Audio Thunderform JWTJ97T20A-T45 (Tan, Amplified)

Jeep Wrangler TJ 1997-2006, Amplified 2 10" 4 ohms Loaded Vehicle Specific Thunderform Subwoofer Enclosure

Amplified 2 10" Loaded Vehicle Specific Thunderform Subwoofer Enclosure • 1997-2006 Jeep Wrangler TJ • Loaded with Thunder4500 Subwoofer • 900W Max • 450W RMS • 4 ohm • Carbon Filled Polypropylene Cone

No Fit Icon Doesn't fit your CJ5

Amplified 2 10" Loaded Vehicle Specific Thunderform Subwoofer Enclosure • 1997-2006 Jeep Wrangler TJ • Loaded with Thunder4500 Subwoofer • 900W Max • 450W RMS • 4 ohm • Carbon Filled Polypropylene Cone

MTX Audio Thunderform JWTJ97T20-TN (Tan, Loaded) Open Box (Complete)

Jeep Wrangler TJ 1997-2006, 2 10" 4 ohms Loaded Vehicle Specific Thunderform Subwoofer Enclosure

JWTJ97T20-TN big DISCONTINUED
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MTX Audio Thunderform JWTJ97T20-TN (Tan, Loaded) Open Box (Complete)

Jeep Wrangler TJ 1997-2006, 2 10" 4 ohms Loaded Vehicle Specific Thunderform Subwoofer Enclosure

• Dual 10" Loaded Vehicle Specific Thunderform Subwoofer Enclosure
• 1997-2006 Jeep Wrangler TJ
• Loaded with Terminator Series Subwoofers
• 800W Max
• 400W RMS
• 4 ohm

No Fit Icon Doesn't fit your CJ5

• Dual 10" Loaded Vehicle Specific Thunderform Subwoofer Enclosure
• 1997-2006 Jeep Wrangler TJ
• Loaded with Terminator Series Subwoofers
• 800W Max
• 400W RMS
• 4 ohm

MTX Audio Thunderform CXP20AC-T45 (Charcoal, Amplified)

Chevrolet Extra Cab 1999-2006, Amplified 2 10" 4 ohms Loaded Vehicle Specific Thunderform Subwoofer Enclosure

CXP20AC-T45 big DISCONTINUED
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MTX Audio Thunderform CXP20AC-T45 (Charcoal, Amplified)

Chevrolet Extra Cab 1999-2006, Amplified 2 10" 4 ohms Loaded Vehicle Specific Thunderform Subwoofer Enclosure

Dual 10" Loaded Amplified Thunderform Subwoofer Enclosure • For 1999-2006 Chevrolet Extra Cab • Also Fits 1999-2001 GMC Pick-Up Extended Cab • 900W Max • 450W RMS • Built-in 200W Amplifier

No Fit Icon Doesn't fit your CJ5

Dual 10" Loaded Amplified Thunderform Subwoofer Enclosure • For 1999-2006 Chevrolet Extra Cab • Also Fits 1999-2001 GMC Pick-Up Extended Cab • 900W Max • 450W RMS • Built-in 200W Amplifier

MTX Audio Thunderform CXP20AG-T45 (Gray, Amplified)

Chevrolet Extra Cab 1999-2006, Amplified 2 10" 4 ohms Loaded Vehicle Specific Thunderform Subwoofer Enclosure

CXP20AG-T45 big DISCONTINUED
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MTX Audio Thunderform CXP20AG-T45 (Gray, Amplified)

Chevrolet Extra Cab 1999-2006, Amplified 2 10" 4 ohms Loaded Vehicle Specific Thunderform Subwoofer Enclosure

Dual 10" Loaded Amplified Thunderform Subwoofer Enclosure • For 1999-2006 Chevrolet Extra Cab • Also Fits 1999-2001 GMC Pick-Up Extended Cab • 900W Max • 450W RMS • Built-in 200W Amplifier

No Fit Icon Doesn't fit your CJ5

Dual 10" Loaded Amplified Thunderform Subwoofer Enclosure • For 1999-2006 Chevrolet Extra Cab • Also Fits 1999-2001 GMC Pick-Up Extended Cab • 900W Max • 450W RMS • Built-in 200W Amplifier

MTX Audio Thunderform DRXP20AM-T45 (Maroon, Amplified)

Dodge Ram Extra Cab 1994-2001, Amplified 2 10" 4 ohms Loaded Vehicle Specific Thunderform Subwoofer Enclosure

DRXP20AM-T45 big DISCONTINUED
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MTX Audio Thunderform DRXP20AM-T45 (Maroon, Amplified)

Dodge Ram Extra Cab 1994-2001, Amplified 2 10" 4 ohms Loaded Vehicle Specific Thunderform Subwoofer Enclosure

• Amplified Dual 10" 4 ohm Loaded Thunderform Subwoofer Enclosure
• For 1994-2001 Dodge Ram Extra Cab
• Thunder4500 Subwoofers Loaded
• 900W Max
• 450W RMS
• Carbon filled polypropylene cone

No Fit Icon Doesn't fit your CJ5

• Amplified Dual 10" 4 ohm Loaded Thunderform Subwoofer Enclosure
• For 1994-2001 Dodge Ram Extra Cab
• Thunder4500 Subwoofers Loaded
• 900W Max
• 450W RMS
• Carbon filled polypropylene cone

MTX Audio Thunderform F250R00BK20A-T45 (Black, Amplified)

Ford F-250 Regular Cab 2000-2006, Amplified 2 10" 4 ohms Loaded Vehicle Specific Thunderform Subwoofer Enclosure

F250R00BK20A-T45 big DISCONTINUED
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MTX Audio Thunderform F250R00BK20A-T45 (Black, Amplified)

Ford F-250 Regular Cab 2000-2006, Amplified 2 10" 4 ohms Loaded Vehicle Specific Thunderform Subwoofer Enclosure

• Amplified Dual 10" Loaded MTX Thunderform Sealed Subwoofer Enclosure
• For 2000-2006 Ford F-250 Regular Cab
• Loaded with Thunder4500 Subwoofer
• 900W Max
• 450W RMS
• 4 ohm
• Carbon filled polypropylene cone

No Fit Icon Doesn't fit your CJ5

• Amplified Dual 10" Loaded MTX Thunderform Sealed Subwoofer Enclosure
• For 2000-2006 Ford F-250 Regular Cab
• Loaded with Thunder4500 Subwoofer
• 900W Max
• 450W RMS
• 4 ohm
• Carbon filled polypropylene cone

MTX Audio Thunderform DDQC10A-T45 (Black, Amplified) Open Box

(Open Box) Dodge Dakota Quad Cab 2000-2004, Amplified 10" 4 ohms Loaded Vehicle Specific Thunderform Subwoofer Enclosure

DDQC10A-T45 big DISCONTINUED
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MTX Audio Thunderform DDQC10A-T45 (Black, Amplified) Open Box

(Open Box) Dodge Dakota Quad Cab 2000-2004, Amplified 10" 4 ohms Loaded Vehicle Specific Thunderform Subwoofer Enclosure

Amplified 10" Loaded Vehicle Specific Thunderform Subwoofer Enclosure • For Dodge Dakota Quad Cab 2000-2004, • Thunder4500 Subwoofer • 450W Max • 225W RMS • Carbon filled polypropylene cone • 4 ohm

No Fit Icon Doesn't fit your CJ5

Amplified 10" Loaded Vehicle Specific Thunderform Subwoofer Enclosure • For Dodge Dakota Quad Cab 2000-2004, • Thunder4500 Subwoofer • 450W Max • 225W RMS • Carbon filled polypropylene cone • 4 ohm

MTX Audio Thunderform F250C00BK10-TN (Black, Loaded)

Ford F-250 Crew Cab 2000-2007, 10" 4 ohms Loaded Vehicle Specific Thunderform Subwoofer Enclosure

F250C00BK10-FPR big DISCONTINUED
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MTX Audio Thunderform F250C00BK10-TN (Black, Loaded)

Ford F-250 Crew Cab 2000-2007, 10" 4 ohms Loaded Vehicle Specific Thunderform Subwoofer Enclosure

• 10" Loaded MTX Thunderform Sealed Subwoofer Enclosure
• For 2000-2007 Ford F-250 Crew Cab
• Loaded with 10" FPR Subwoofer
• 300W Max
• 150W RMS
• 4 ohm
• Carbon Filled Polypropylene Cone

No Fit Icon Doesn't fit your CJ5

• 10" Loaded MTX Thunderform Sealed Subwoofer Enclosure
• For 2000-2007 Ford F-250 Crew Cab
• Loaded with 10" FPR Subwoofer
• 300W Max
• 150W RMS
• 4 ohm
• Carbon Filled Polypropylene Cone

MTX Audio Thunderform FESCP01C12A-TN (Charcoal, Amplified)

Ford Escape 2001-2004, Amplified 12" 4 ohms Loaded Vehicle Specific Thunderform Subwoofer Enclosure

FESCP01C12A-TN big DISCONTINUED
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MTX Audio Thunderform FESCP01C12A-TN (Charcoal, Amplified)

Ford Escape 2001-2004, Amplified 12" 4 ohms Loaded Vehicle Specific Thunderform Subwoofer Enclosure

• Amplified 12" Sealed Loaded Thunderform Subwoofer Enclosure
• For Ford Escape 2001-2004
• Loaded with 12" Thunder4500 Subwoofer
• 400W Max
• 200W RMS
• 4 Ohm
• Polypropylene Cone

No Fit Icon Doesn't fit your CJ5

• Amplified 12" Sealed Loaded Thunderform Subwoofer Enclosure
• For Ford Escape 2001-2004
• Loaded with 12" Thunder4500 Subwoofer
• 400W Max
• 200W RMS
• 4 Ohm
• Polypropylene Cone

MTX Audio Thunderform F150R04BK24-TN (Black, Loaded)

Ford F-150 Regular Cab 2004-2010, 2 12" 4 ohms Loaded Car Specific Thunderform Subwoofer Enclosure

F150R04BK24-TN big DISCONTINUED
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MTX Audio Thunderform F150R04BK24-TN (Black, Loaded)

Ford F-150 Regular Cab 2004-2010, 2 12" 4 ohms Loaded Car Specific Thunderform Subwoofer Enclosure

• Dual 12" Loaded MTX Thunderform Sealed Subwoofer Enclosure
• For 2004-2008 Ford F-150 Regular Cab
• Loaded with 12" Terminator Series Subwoofers
• 800W Max
• 400W RMS
• 4 ohm
• Polypropylene Cone

No Fit Icon Doesn't fit your CJ5

• Dual 12" Loaded MTX Thunderform Sealed Subwoofer Enclosure
• For 2004-2008 Ford F-150 Regular Cab
• Loaded with 12" Terminator Series Subwoofers
• 800W Max
• 400W RMS
• 4 ohm
• Polypropylene Cone

MTX Audio Thunderform F150R04C24-TN (Charcoal, Loaded)

Ford F-150 Regular Cab 2004-2010, 2 12" 4 ohms Loaded Car Specific Thunderform Subwoofer Enclosure

F150R04C24-TN big DISCONTINUED
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MTX Audio Thunderform F150R04C24-TN (Charcoal, Loaded)

Ford F-150 Regular Cab 2004-2010, 2 12" 4 ohms Loaded Car Specific Thunderform Subwoofer Enclosure

• Dual 12" Loaded MTX Thunderform Sealed Subwoofer Enclosure
• For 2004-2008 Ford F-150 Regular Cab
• Loaded with 12" Terminator Series Subwoofers
• 800W Max
• 400W RMS
• 4 ohm
• Polypropylene Cone

No Fit Icon Doesn't fit your CJ5

• Dual 12" Loaded MTX Thunderform Sealed Subwoofer Enclosure
• For 2004-2008 Ford F-150 Regular Cab
• Loaded with 12" Terminator Series Subwoofers
• 800W Max
• 400W RMS
• 4 ohm
• Polypropylene Cone

MTX Audio Thunderform DDXP201-TN (Black, Loaded)

Dodge Dakota 1997-2004, 2 10" 4 ohms Loaded Vehicle Specific Thunderform Subwoofer Enclosure

DDXP201-TN big DISCONTINUED
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MTX Audio Thunderform DDXP201-TN (Black, Loaded)

Dodge Dakota 1997-2004, 2 10" 4 ohms Loaded Vehicle Specific Thunderform Subwoofer Enclosure

• Loaded Dual 10" Terminator Series Subwoofers Enclosure for 1997-2004 Dodge Dakota Club Cab Trucks
• 800W Max
• 400W RMS
• Polypropylene Cone
• Rubber Surround
• 28oz. Magnet

No Fit Icon Doesn't fit your CJ5

• Loaded Dual 10" Terminator Series Subwoofers Enclosure for 1997-2004 Dodge Dakota Club Cab Trucks
• 800W Max
• 400W RMS
• Polypropylene Cone
• Rubber Surround
• 28oz. Magnet

MTX Audio Thunderform DRXP20T-TN (Tan, Loaded)

Dodge Ram Extra Cab 1994-2001, 2 10" 4 ohms Loaded Vehicle Specific Thunderform Subwoofer Enclosure

DRXP20T-TN big DISCONTINUED
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MTX Audio Thunderform DRXP20T-TN (Tan, Loaded)

Dodge Ram Extra Cab 1994-2001, 2 10" 4 ohms Loaded Vehicle Specific Thunderform Subwoofer Enclosure

• Under Rear Seat On Driver Side: Bolts To Vehicle With Supplied Hardware
• For 1994-2001 Dodge Ram Extended Cab
• 10" Terminator Series Subwoofers
• 800W Max
• 400W RMS
• Polypropylene Cone
• 4 ohm Impedance

No Fit Icon Doesn't fit your CJ5

• Under Rear Seat On Driver Side: Bolts To Vehicle With Supplied Hardware
• For 1994-2001 Dodge Ram Extended Cab
• 10" Terminator Series Subwoofers
• 800W Max
• 400W RMS
• Polypropylene Cone
• 4 ohm Impedance

MTX Audio Thunderform C15C07FB10-T45 (Black, Loaded)

Chevrolet 1500/2500 Crew Cab 2007-2010, Loaded 10" 4 ohm Subwoofer Enclosure

C15C07FB10-T45 big DISCONTINUED
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MTX Audio Thunderform C15C07FB10-T45 (Black, Loaded)

Chevrolet 1500/2500 Crew Cab 2007-2010, Loaded 10" 4 ohm Subwoofer Enclosure

Loaded 10" Subwoofer Enclosure • Fits in Chevrolet 1500/2500 Crew Cab 2007-2010 • 450W Max • 225W RMS • Fiberglass Construction • 1.5" Voice Coil • 30oz. Strontium Ferrite Magnet • Enclosure Volume: 1.0 Cubic Ft

No Fit Icon Doesn't fit your CJ5

Loaded 10" Subwoofer Enclosure • Fits in Chevrolet 1500/2500 Crew Cab 2007-2010 • 450W Max • 225W RMS • Fiberglass Construction • 1.5" Voice Coil • 30oz. Strontium Ferrite Magnet • Enclosure Volume: 1.0 Cubic Ft

MTX Audio Thunderform FEN10A-TN (Black, Amplified)

Ford Expedition 1997-2002, Amplified 10" 4 ohms Loaded Vehicle Specific Thunderform Sub Enclosure

FEN10A-TN big DISCONTINUED
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MTX Audio Thunderform FEN10A-TN (Black, Amplified)

Ford Expedition 1997-2002, Amplified 10" 4 ohms Loaded Vehicle Specific Thunderform Sub Enclosure

• Amplified 10" Loaded Vehicle Specific MTX Thunderform Subwoofer Enclosure
• For Ford 1997-2002 Expedition Vehicles
• 10" Terminator Series Subwoofer
• 400W Max
• 200W RMS
• 4 Ohm Impedance

No Fit Icon Doesn't fit your CJ5

• Amplified 10" Loaded Vehicle Specific MTX Thunderform Subwoofer Enclosure
• For Ford 1997-2002 Expedition Vehicles
• 10" Terminator Series Subwoofer
• 400W Max
• 200W RMS
• 4 Ohm Impedance

MTX HC10UBK

Fits Select 1992-1995 Honda Civic Vehicles - 10" 200W Loaded Thunderform Subwoofer Enclosure - Black

HC10UBK big DISCONTINUED
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MTX HC10UBK

Fits Select 1992-1995 Honda Civic Vehicles - 10" 200W Loaded Thunderform Subwoofer Enclosure - Black

• 200W Single 10" Sealed Subwoofer Enclosure
• RMS: 200 W Total
• Preloaded with single 10" Terminator-Series Subwoofers
• 10" Sealed Vehicle Specific Enclosure
• Sealed enclosure with factory finish - Black

No Fit Icon Doesn't fit your CJ5

• 200W Single 10" Sealed Subwoofer Enclosure
• RMS: 200 W Total
• Preloaded with single 10" Terminator-Series Subwoofers
• 10" Sealed Vehicle Specific Enclosure
• Sealed enclosure with factory finish - Black

MTX Audio Thunderform CXP20C-TN (Charcoal, Loaded)

Chevrolet Extra Cab 1999-2006, 2 10" 4 ohms Loaded Vehicle Specific Thunderform Subwoofer Enclosure

CXP20C-TN big DISCONTINUED
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MTX Audio Thunderform CXP20C-TN (Charcoal, Loaded)

Chevrolet Extra Cab 1999-2006, 2 10" 4 ohms Loaded Vehicle Specific Thunderform Subwoofer Enclosure

• Dual 10" Loaded MTX Thunderform Sealed Subwoofer Enclosure
• For 1999-2005 Chevy Extended Cab
• 1999-2001 GMC Pick-Up and 3-/Extended Cab 4-Door Models
• Loaded With 10" Terminator Series Subwoofers
• 800W Max
• 400W RMS
• 4 Ohm

No Fit Icon Doesn't fit your CJ5

• Dual 10" Loaded MTX Thunderform Sealed Subwoofer Enclosure
• For 1999-2005 Chevy Extended Cab
• 1999-2001 GMC Pick-Up and 3-/Extended Cab 4-Door Models
• Loaded With 10" Terminator Series Subwoofers
• 800W Max
• 400W RMS
• 4 Ohm

MTX Audio Thunderform FXP16G-T45 (Gray, Loaded)

Ford F-150 Extended Cab 1997-2003, 2 8" 4 ohms Loaded Vehicle Specific Thunderform Subwoofer Enclosure

FXP16G-T45 big DISCONTINUED
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MTX Audio Thunderform FXP16G-T45 (Gray, Loaded)

Ford F-150 Extended Cab 1997-2003, 2 8" 4 ohms Loaded Vehicle Specific Thunderform Subwoofer Enclosure

• Dual 8" Loaded Vehicle Specific Thunderform Subwoofer Enclosure
• For 1997-2003 Ford F-150 Extended Cab
• Loaded with 8" Thunder4500 Subwoofers
• 600W Max
• 300W RMS
• 4 ohm

No Fit Icon Doesn't fit your CJ5

• Dual 8" Loaded Vehicle Specific Thunderform Subwoofer Enclosure
• For 1997-2003 Ford F-150 Extended Cab
• Loaded with 8" Thunder4500 Subwoofers
• 600W Max
• 300W RMS
• 4 ohm

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