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NVX NSP525 with Speaker Installation Kit

240W Peak (160W RMS) 5.25" N-Series 2-Way Coaxial Car Speakers with Speaker Baffles, Panel Removal Kit, Sound Dampening and Heavy Duty Roller

NSP525, XBAF525, SDSK2, SDRLR1, BTK106 big
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240W Peak (160W RMS) 5.25" N-Series 2-Way Coaxial Car Speakers with Speaker Baffles, Panel Removal Kit, Sound Dampening and Heavy Duty Roller

• 240 watts Peak Each, 80 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB
• Mounting Depth: 1.96"

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Install kits available for most vehicles

found car based on your search
Fits the following location in your 911
  • Front Door
175
List price $138.70
-32% $94.85 /pair

In stock

• 240 watts Peak Each, 80 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB
• Mounting Depth: 1.96"

Cerwin Vega H746 with Speaker Installation Kit

60W RMS 4"x6" Coaxial Car Speakers 4x6” Foam Speaker Rings + Sound Dampening, Roller and Panel Removal Kit

H746_ACC_KIT big
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60W RMS 4"x6" Coaxial Car Speakers 4x6” Foam Speaker Rings + Sound Dampening, Roller and Panel Removal Kit

• 275 watts Peak Each, 30 watts RMS Each
• 1" PEI (Polyetherimide) Balanced Dome Tweeters
• Graphite-injected reinforced spun cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
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Install kits available for most vehicles

found car based on your search
Fits the following location in your 911
  • Rear Door
149
List price $132.70
-28% $95.82 /pair

In stock

• 275 watts Peak Each, 30 watts RMS Each
• 1" PEI (Polyetherimide) Balanced Dome Tweeters
• Graphite-injected reinforced spun cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB

Kenwood KFC-4675C with Installation Accessories

120W Peak (40W RMS) 4x6” 2-Way Car Speakers with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

KFC-4675C, FRING46, SDSK2, SDRLR1, BTK106 big
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120W Peak (40W RMS) 4x6” 2-Way Car Speakers with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

• 60 watts Peak Each, 20 watts RMS Each
• 1" Polypropylene Balanced Dome Tweeters
• Injection Molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
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Install kits available for most vehicles

found car based on your search
Fits the following location in your 911
  • Rear Door
156
List price $200.71
-44% $112.66 /pair

In stock

• 60 watts Peak Each, 20 watts RMS Each
• 1" Polypropylene Balanced Dome Tweeters
• Injection Molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

Diamond Audio DMD52 with Sound Damping

160W Peak (80W RMS) 5.25" DMD Series 2-way Coaxial Car Speakers + NVX SDSK2 Sound Damping

DMD52_SDSK2 big
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160W Peak (80W RMS) 5.25" DMD Series 2-way Coaxial Car Speakers + NVX SDSK2 Sound Damping

• 80 watts Peak Each, 40 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your 911
47
List price $138.73
-10% $124.98

In stock

• 80 watts Peak Each, 40 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB

Infinity REF467F with Sound Damping

270W Peak (90W RMS) 4x6" Reference Series 2-way 3-ohm Speakers + NVX SDSK2 Sound Damping

REF467F_SDSK2 big
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270W Peak (90W RMS) 4x6" Reference Series 2-way 3-ohm Speakers + NVX SDSK2 Sound Damping

• 135 watts Peak Each, 45 watts RMS Each
• 1/2" Textile Balanced Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 92 dB

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your 911
47
List price $158.69
-21% $124.94

In stock

• 135 watts Peak Each, 45 watts RMS Each
• 1/2" Textile Balanced Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 92 dB

MTX Audio THUNDER52 with Sound Damping

180W Peak (90W RMS) 5.25" Thunder Dome Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

THUNDER52_SDBSK2 big
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180W Peak (90W RMS) 5.25" Thunder Dome Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 90 watts Peak Each, 45 watts RMS Each
• 1" Silk Dome tweeters
• Polypropylene cone material
• 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.
found car based on your search
Fits your 911
49
List price $138.69
$134.94

In stock

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

NVX VSP525KIT with Sound Damping

750W Peak (250W RMS) 5.25" V-Series 2-Way Component Speaker System with 25mm Silk Dome Tweeters + NVX SDBSK2 Premium Sound Damping

VSP525KIT_SDBSK2 big
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750W Peak (250W RMS) 5.25" V-Series 2-Way Component Speaker System with 25mm Silk Dome Tweeters + NVX SDBSK2 Premium Sound Damping

• 375 watts Peak Each, 125 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB
• Mounting Depth: 2.04"

shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your 911
74
List price $138.73
-20% $110.48

In stock

• 375 watts Peak Each, 125 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB
• Mounting Depth: 2.04"

Rockford Fosgate Punch P142 with Sound Damping

120W Peak (60W RMS) 4" Punch Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

09-P142_SDBSK2 big
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120W Peak (60W RMS) 4" Punch Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 60 watts Peak Each, 30 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome tweeters
• Injection-molded mineral-filled polypropylene cone material with VAST technology
• Impedance: 4 ohm
• Sensitivity: 86.5 dB

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your 911
58
List price $128.73
$124.98

In stock

Only 1 Left!

• 60 watts Peak Each, 30 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome tweeters
• Injection-molded mineral-filled polypropylene cone material with VAST technology
• Impedance: 4 ohm
• Sensitivity: 86.5 dB

Rockford Fosgate Punch P152 with Sound Damping

160W Peak (80W RMS) 5.25" Punch Series 2-way 4-ohm Full Range Car Speakers + NVX SDBSK2 Premium Sound Damping

09-P152_SDBSK2 big
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160W Peak (80W RMS) 5.25" Punch Series 2-way 4-ohm Full Range Car Speakers + NVX SDBSK2 Premium Sound Damping

• 80 watts Peak Each, 40 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome tweeters
• Mineral-Filled Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your 911
74
List price $128.73
$124.98

In stock

• 80 watts Peak Each, 40 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome tweeters
• Mineral-Filled Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

Rockford Fosgate Punch with Sound Damping

140W Peak (70W RMS) 4x6” Punch Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

09-P1462_SDBSK2 big
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140W Peak (70W RMS) 4x6” Punch Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 70 watts Peak Each, 35 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome tweeters
• Injection-molded Mineral-filled 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.
found car based on your search
Fits your 911
84
List price $128.73
$124.98

In stock

• 70 watts Peak Each, 35 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome tweeters
• Injection-molded Mineral-filled Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

6 Pack: Polk Audio DB522 5.25" Car/Marine/ATV Speakers (12 Speakers)

6 Pairs (12 total speakers) 5.25 Inch 300 Watt 2 Way Car/Marine ATV Stereo Speakers Pair (6 Pack)

DB522 6 Pack big
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6 Pairs (12 total speakers) 5.25 Inch 300 Watt 2 Way Car/Marine ATV Stereo Speakers Pair (6 Pack)

• 300 Watts Max Each, 100 Watts RMS Each
• 0.75" shallow tweeter design
• Polypropylene UV tolerant cone
• 4 Ohm Impedance
• Sensitivity: 91dB
• Mounting Depth: 1.74"

shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your 911
13
List price $659.94
-25% $498.00

In stock

Only 3 Left!

• 300 Watts Max Each, 100 Watts RMS Each
• 0.75" shallow tweeter design
• Polypropylene UV tolerant cone
• 4 Ohm Impedance
• Sensitivity: 91dB
• Mounting Depth: 1.74"

Lowest price in 30 days

(2-Pairs) NVX NSP525 + NVX Speaker Baffles

(4-Total) 5-1/4" 2-Way N-Series Coaxial Car Speakers with 20mm Silk Dome Tweeters

NSP525, NSP525 big
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(4-Total) 5-1/4" 2-Way N-Series Coaxial Car Speakers with 20mm Silk Dome Tweeters

• Peak Power: 240W Each
• RMS Power: 80W Each
• 2-Way Coaxial
• 4 ohm Impedance
• Polypropylene Cone Material
• Nitrile Butadiene Rubber Surround
• 20mm Silk Dome Tweeter

shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your 911
36
List price $171.96
-35% $112.04

In stock

• Peak Power: 240W Each
• RMS Power: 80W Each
• 2-Way Coaxial
• 4 ohm Impedance
• Polypropylene Cone Material
• Nitrile Butadiene Rubber Surround
• 20mm Silk Dome Tweeter

Cerwin Vega XED52 with Speaker Installation Kit

60W RMS 5.25" Coaxial 2-Way Speakers + 5.25” Speaker Baffles + Sound Dampening, Roller and Panel Removal Kit

XED52_ACC_KIT big
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60W RMS 5.25" Coaxial 2-Way Speakers + 5.25” Speaker Baffles + Sound Dampening, Roller and Panel Removal Kit

• 275 watts Peak Each, 30 watts RMS Each
• 1" Metallic Balanced Dome Tweeters
• Curvilinear polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
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Install kits available for most vehicles

found car based on your search
Fits the following location in your 911
  • Front Door
155
List price $126.70
-33% $85.02 /pair

In stock

• 275 watts Peak Each, 30 watts RMS Each
• 1" Metallic Balanced Dome Tweeters
• Curvilinear polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

Cerwin-Vega XED525C with Speaker Installation Kit

60W RMS 5.25” 2-Way Component Speakers + 5.25” Speaker Baffles + Sound Dampening, Roller and Panel Removal Kit

XED525C_ACC_KIT big
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60W RMS 5.25” 2-Way Component Speakers + 5.25” Speaker Baffles + Sound Dampening, Roller and Panel Removal Kit

• 300 watts Peak Each, 30 watts RMS Each
• 1" Metallic Balanced Dome Tweeters
• Curvilinear polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

found car based on your search
Fits the following location in your 911
  • Front Door
156
List price $144.70
-31% $100.02 /set

In stock

• 300 watts Peak Each, 30 watts RMS Each
• 1" Metallic Balanced Dome Tweeters
• Curvilinear polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

Diamond Audio MP525 with Speaker Installation Accessories

300W Max (150W RMS) 5.25" PRO Full-Range Coaxial Horn Driver Speakers

MP525, XBAF525, SDSK2, SDRLR1, BTK106 big
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300W Max (150W RMS) 5.25" PRO Full-Range Coaxial Horn Driver Speakers

• 150 watts Max Each, 75 watts RMS Each
• 1" Aluminum Horn Tweeters
• Sensitivity: 101 dB
• Mounting Depth: 2.99"

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

found car based on your search
Fits the following location in your 911
  • Front Door
150
List price $512.70
-6% $479.85 /pair

In stock

Only 2 Left!

• 150 watts Max Each, 75 watts RMS Each
• 1" Aluminum Horn Tweeters
• Sensitivity: 101 dB
• Mounting Depth: 2.99"

Kenwood KFC-1366S with Installation Accessories

60W RMS5.25" 2-Way Coaxial Speakers with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

KFC-1366S, XBAF525, SDSK2, SDRLR1, BTK106 big
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60W RMS5.25" 2-Way Coaxial Speakers with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

• 260 watts Peak Each, 30 watts RMS Each
• 1" PEI (Polyetherimide) Balanced Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

found car based on your search
Fits the following location in your 911
  • Front Door
151
List price $152.71
-42% $88.86 /pair

In stock

• 260 watts Peak Each, 30 watts RMS Each
• 1" PEI (Polyetherimide) Balanced Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB

Cerwin Vega XED52 with Sound Damping

550W Peak (60W RMS) 5.25" XED Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

XED52_SDSK2 big
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550W Peak (60W RMS) 5.25" XED Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

• 275 watts Peak Each, 30 watts RMS Each
• 1" Metallic Balanced Dome Tweeters
• Curvilinear polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your 911
54
List price $72.73
-18% $59.98

In stock

• 275 watts Peak Each, 30 watts RMS Each
• 1" Metallic Balanced Dome Tweeters
• Curvilinear polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

Cerwin Vega XED525C with Sound Damping

600W Peak (60W RMS) 5.25” XED Series 2-Way Component Speakers + NVX SDSK2 Sound Damping

XED525C_SDSK2 big
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600W Peak (60W RMS) 5.25” XED Series 2-Way Component Speakers + NVX SDSK2 Sound Damping

• 300 watts Peak Each, 30 watts RMS Each
• 1" Metallic Balanced Dome Tweeters
• Curvilinear polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your 911
55
List price $90.73
-17% $74.98

In stock

• 300 watts Peak Each, 30 watts RMS Each
• 1" Metallic Balanced Dome Tweeters
• Curvilinear polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

Cerwin Vega H752 with Sound Damping

500W Peak (80W RMS) 5.25” HED Series Coaxial Car Speakers + NVX SDSK2 Sound Damping

H752_SDSK2 big
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500W Peak (80W RMS) 5.25” HED Series Coaxial Car Speakers + NVX SDSK2 Sound Damping

• 275 watts Peak Each, 40 watts RMS Each
• 1" Polypropylene Balanced Dome Tweeters
• Graphite Reinforced Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your 911
52
List price $102.73
-17% $84.98

In stock

• 275 watts Peak Each, 40 watts RMS Each
• 1" Polypropylene Balanced Dome Tweeters
• Graphite Reinforced Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

Diamond Audio MP525 (2-Pairs, 4-Total)

600W Max (300W RMS) 5.25" PRO Full-Range Coaxial Horn Driver Speakers (2-Pairs)

MP525_2 big
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600W Max (300W RMS) 5.25" PRO Full-Range Coaxial Horn Driver Speakers (2-Pairs)

• 150 watts Max Each, 75 watts RMS Each
• 1" Aluminum Horn Tweeters
• Sensitivity: 101 dB
• Mounting Depth: 2.99"

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your 911
2
$879.98

In stock

Only 1 Left!

• 150 watts Max Each, 75 watts RMS Each
• 1" Aluminum Horn Tweeters
• Sensitivity: 101 dB
• Mounting Depth: 2.99"

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    FAQ for Speakers in 1990 911

    Q: Can I upgrade or change the Speakers in 1990 Porsche 911?

    A: Yes this page includes all the best Speakers that work in your 911.

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

    • You see only parts engineered for your exact vehicle
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    Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.