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MTX Audio THUNDER51

360W Peak (180W RMS) 5.25" Thunder Series 2-way 4-ohm Component Speakers System

THUNDER51 big
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360W Peak (180W RMS) 5.25" Thunder Series 2-way 4-ohm Component Speakers System

• 180 watts Peak Each, 90 watts RMS Each
• 1" Silk Soft Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

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Install kits available for most vehicles

additional information required
Fits select locations in your 6000.
Add vehicle details to confirm exact location.
1
$249.95 /set

In stock

MTX Audio THUNDER61

180W RMS 6.5" Thunder Series 2 Way Component 4-ohm Speaker System

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180W RMS 6.5" Thunder Series 2 Way Component 4-ohm Speaker System

• 90 watts RMS Each
• 1-3/8" Silk Soft Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

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Save up to $21 on install kits for this speaker

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Fits select locations in your 6000.
Add vehicle details to confirm exact location.
2
$249.96 /set

In stock

Only 1 Left!

Limited time!

MTX Audio THUNDER52

180W Peak (90W RMS) 5.25" Thunder Series 2 Way Coaxial 4-ohm Speakers

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180W Peak (90W RMS) 5.25" Thunder Series 2 Way Coaxial 4-ohm Speakers

• 45 watts RMS Each
• 1" Silk Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

Free Speaker Accessory at Checkout!
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Install kits available for most vehicles

additional information required
Fits select locations in your 6000.
Add vehicle details to confirm exact location.
2
$119.95 /pair

In stock

MTX Audio THUNDER65

120W RMS 6.5" Thunder Series 2 Way Coaxial 4-ohm Speakers

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120W RMS 6.5" Thunder Series 2 Way Coaxial 4-ohm Speakers

• 60 watts RMS Each
• 1" Silk Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

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VIP Product Get $14.00 in rewards to spend later

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Save up to $21 on install kits for this speaker

additional information required
Fits select locations in your 6000.
Add vehicle details to confirm exact location.
3
List price $169.99
-18% $139.95 /pair

In stock

Limited time!

MTX Audio THUNDER693

200W RMS 6x9" Thunder Series 3-way 4-ohm Coaxial Car Speakers with Dual Tweeters

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200W RMS 6x9" Thunder Series 3-way 4-ohm Coaxial Car Speakers with Dual Tweeters

• 100 watts RMS Each
• 1-3/16" dual Silk Cone tweeters
• Polypropylene cone material
• 1" Silk Dome super tweeters
• Impedance: 4 ohm
• Sensitivity: 92 dB

Free Speaker Accessory at Checkout!
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VIP Product Get $22.00 in rewards to spend later

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Install kits available for most vehicles

additional information required
Fits select locations in your 6000.
Add vehicle details to confirm exact location.
2
$219.95 /pair

In stock

Only 2 Left!

MTX Audio THUNDER61 with Sound Damping

180W RMS 6.5" Thunder Series 2-way 4-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

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180W RMS 6.5" Thunder Series 2-way 4-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

• 90 watts RMS Each
• 1-3/8" Silk Soft Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
additional information required
Fits select locations in your 6000.
Add vehicle details to confirm exact location.
48
$264.95

In stock

Only 1 Left!

• 90 watts RMS Each
• 1-3/8" Silk Soft Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

MTX Audio THUNDER51 with Sound Damping

360W Peak (180W RMS) 5.25" Thunder Series 2-way 4-ohm Component Speakers System + NVX SDBSK2 Premium Sound Damping

THUNDER51_SDBSK2 big
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360W Peak (180W RMS) 5.25" Thunder Series 2-way 4-ohm Component Speakers System + NVX SDBSK2 Premium Sound Damping

• 180 watts Peak Each, 90 watts RMS Each
• 1" Silk Soft Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
additional information required
Fits select locations in your 6000.
Add vehicle details to confirm exact location.
47
$264.94

In stock

• 180 watts Peak Each, 90 watts RMS Each
• 1" Silk Soft Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

MTX TERMINATOR68 with Speaker Installation Kit

200W Peak (100W RMS) 6x9" 3-Way Thunder Series Coaxial Car Speakers + NVX Speaker Baffles, Sound Dampening, Roller, and Panel Removal Kit

THUNDER693, XBAF69, SDSK2, SDRLR1, BTK106 big
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200W Peak (100W RMS) 6x9" 3-Way Thunder Series Coaxial Car Speakers + NVX Speaker Baffles, Sound Dampening, Roller, and Panel Removal Kit

• Peak Power: 200W • RMS Power: 100W
• Pivoting Tweeter
• Mounting Depth: 3"
• Polypropylene Cone

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

additional information required
Fits select locations in your 6000.
Add vehicle details to confirm exact location.
187
List price $282.66
-6% $265.63 /pair

In stock

Only 1 Left!

• Peak Power: 200W • RMS Power: 100W
• Pivoting Tweeter
• Mounting Depth: 3"
• Polypropylene Cone

MTX Audio THUNDER693 with Sound Damping

200W RMS 6x9" Thunder Series 3-way 4-ohm Coaxial Car Speakers with Dual Tweeters + NVX SDBSK2 Premium Sound Damping

THUNDER693_SDBSK2 big
Go to item page Right Arrow Icon of Right Arrow

200W RMS 6x9" Thunder Series 3-way 4-ohm Coaxial Car Speakers with Dual Tweeters + NVX SDBSK2 Premium Sound Damping

• 100 watts RMS Each
• 1-3/16" dual Silk Cone tweeters
• Polypropylene cone material
• 1" Silk Dome super tweeters
• Impedance: 4 ohm
• Sensitivity: 92 dB

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
additional information required
Fits select locations in your 6000.
Add vehicle details to confirm exact location.
48
$234.94

In stock

Only 2 Left!

• 100 watts RMS Each
• 1-3/16" dual Silk Cone tweeters
• Polypropylene cone material
• 1" Silk Dome super tweeters
• Impedance: 4 ohm
• Sensitivity: 92 dB

MTX Audio THUNDER51 (2-Pairs, 4-Total)

720W Peak (360W RMS) 5.25" Thunder Series 2-Way Component System (2-Pairs)

THUNDER51_2 big
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720W Peak (360W RMS) 5.25" Thunder Series 2-Way Component System (2-Pairs)

• Peak Power: 180W • RMS Power: 90W
• 1" Soft Dome Tweeter
• Mounting Depth: 2.19"
• Polypropylene Cone and Rubber Surround

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
additional information required
Fits select locations in your 6000.
Add vehicle details to confirm exact location.
1
$499.90

In stock

Only 2 Left!

• Peak Power: 180W • RMS Power: 90W
• 1" Soft Dome Tweeter
• Mounting Depth: 2.19"
• Polypropylene Cone and Rubber Surround

MTX Audio RTX108 with Speaker Installation Kit

180W Peak (90W RMS) 5.25" Thunder Series 2-Way Component System with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

THUNDER51, XBAF525, SDSK2, SDRLR1, BTK106 big
Go to item page Right Arrow Icon of Right Arrow

180W Peak (90W RMS) 5.25" Thunder Series 2-Way Component System with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

• Peak Power: 180W • RMS Power: 90W
• 1" Soft Dome Tweeter
• Mounting Depth: 2.19"
• Polypropylene Cone and Rubber Surround

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

additional information required
Fits select locations in your 6000.
Add vehicle details to confirm exact location.
148
List price $312.66
-7% $289.98 /set

In stock

• Peak Power: 180W • RMS Power: 90W
• 1" Soft Dome Tweeter
• Mounting Depth: 2.19"
• Polypropylene Cone and Rubber Surround

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    FAQ for Speakers in 1987 6000

    Q: Can I upgrade or change the Speakers in 1987 Pontiac 6000?

    A: Yes this page includes all the best Speakers that work in your 6000.

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    Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

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    Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.