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Polk Audio DB522 (DB 522)

600W Peak (200W RMS) 5.25" DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers

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600W Peak (200W RMS) 5.25" DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers

• 300 watts Peak Each, 100 watts RMS Each
• 3/4" Silk Dome tweeters
• UV-tolerant Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

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Install kits available for most vehicles

found car based on your search
Fits the following location in your 928
  • Rear Seat Side Panel
13
List price $109.99
-9% $100.00 /pair

In stock

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Rockford Fosgate Punch P1V2-3

300W Peak (150W RMS) 3" Punch P1 Series 3 Way Coaxial 4-ohm Speakers

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300W Peak (150W RMS) 3" Punch P1 Series 3 Way Coaxial 4-ohm Speakers

• 150 watts Peak Each, 75 watts RMS Each
• 3/4" Tetolon Inverted Dome tweeters
• 3/8" Polypropylene-Piezo super tweeters
• Mica reinforced Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 82 dB

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found car based on your search
Fits the following location in your 928
  • Front Door
List price $215.99
Save $56.00
-26% $159.99 /pair

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Rockford Fosgate Punch P1 P142

120W Peak (60W RMS) 4" Punch Series 2 Way Coaxial 4-ohm Speakers

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120W Peak (60W RMS) 4" Punch Series 2 Way Coaxial 4-ohm Speakers

• 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

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Install kits available for most vehicles

found car based on your search
Fits the following location in your 928
  • Side Panel
11
$109.99 /pair

In stock

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Used from: $93.49
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Pioneer TS-G1320S

500W Peak (70W RMS) 5.25" G-Series 2-way 4-ohm Coaxial Car Speakers

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500W Peak (70W RMS) 5.25" G-Series 2-way 4-ohm Coaxial Car Speakers

• 250 watts Peak Each, 35 watts RMS Each
• 1-3/16" Polyethylene Terephthalate (PET) Balanced Dome tweeters
• Mica Injected Polypropylene - MIPP cone material with Progressive Flex Suspension System (PFSS) spider
• Impedance: 4 ohm
• Sensitivity: 87 dB

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Install kits available for most vehicles

found car based on your search
Fits the following location in your 928
  • Rear Seat Side Panel
7
List price $65.00
Save 31%
-31% $44.99 /pair

In stock

Used from: $39.99
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JVC CS-DR421

440W Peak (70W RMS) 4" DRVN DR Series 2-Way 4-ohm Shallow-Mount Coaxial Car Speakers

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440W Peak (70W RMS) 4" DRVN DR Series 2-Way 4-ohm Shallow-Mount Coaxial Car Speakers

• 220 watts Peak Each, 35 watts RMS Each
• 1" Polyetherimide Balanced Dome tweeters
• Carbon Mica cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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Install kits available for most vehicles

found car based on your search
Fits the following location in your 928
  • Side Panel
List price $119.00
-17% $99.00 /pair

In stock

Only 1 Left!

Polk Audio DB5252 (DB 5252)

600W Peak (200W RMS) 5.25” DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers

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600W Peak (200W RMS) 5.25” DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers

• 300 watts Peak Each, 100 watts RMS Each
• 3/4" dual Silk Dome tweeters
• UV-Resistant Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

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Install kits available for most vehicles

found car based on your search
Fits the following location in your 928
  • Rear Seat Side Panel
4
List price $209.99
-5% $200.00 /set

In stock

Only 2 Left!

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Alpine S2-S40

280W Peak (90W RMS) 4" S-Series Hi-Res 2-Way Coaxial 4-ohm Car Speakers

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280W Peak (90W RMS) 4" S-Series Hi-Res 2-Way Coaxial 4-ohm Car Speakers

• 140 watts Peak Each, 45 watts RMS Each
• Hi-Res Audio Certified
• 3/4" Cloth Soft Dome tweeters
• Polypropylene, Glass Fiber and Mica cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB

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Install kits available for most vehicles

found car based on your search
Fits the following location in your 928
  • Side Panel
2
List price $130.00
-15% $109.95 /pair

In stock

Limited time!

JBL Club 44F (JBLSPKCB44F)

210W Peak (70W RMS) 4" Club Series 2 Way Coaxial 3-ohms Speakers

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210W Peak (70W RMS) 4" Club Series 2 Way Coaxial 3-ohms Speakers

• 105 watts Peak Each, 35 watts RMS Each
• Silk Edge Driven Dome Tweeters
• UV-Resistant Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 90 dB

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Install kits available for most vehicles

found car based on your search
Fits the following location in your 928
  • Side Panel
List price $129.95
-23% $99.95 /pair

In stock

Used from: $69.97
Limited time!

Kicker CSC4 (46CSC44)

300W Peak (100W RMS) 4” CS Series 2 Way Coaxial 4-ohm Speakers

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300W Peak (100W RMS) 4” CS Series 2 Way Coaxial 4-ohm Speakers

• 150 watts Peak Each, 50 watts RMS Each
• 1/2" PEI (Polyetherimide) Balanced Dome Tweeters
• Polypropylene cone material
• Steel mesh speaker grilles included
• Impedance: 4 ohm
• Sensitivity: 88 dB

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Install kits available for most vehicles

found car based on your search
Fits the following location in your 928
  • Side Panel
1
List price $84.99
Save 29%
-29% $59.96 /pair

In stock

Used from: $52.49

NVX XQS3 v2 (XQS3v2)

200W Peak (100W RMS) 3.5" X-Series v2 NEO Midrange Car Speakers

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200W Peak (100W RMS) 3.5" X-Series v2 NEO Midrange Car Speakers

• 100 watts Peak Each, 50 watts RMS Each
• tweeters
• Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB

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found car based on your search
Fits the following location in your 928
  • Front Door
List price $155.99
-17% $129.99 /pair

In stock

Used from: $90.99
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Rockford Fosgate Power T1 T152

240W Peak (120W RMS) 5.25" Power Series 2-way 4-ohm Coaxial Car Speakers

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240W Peak (120W RMS) 5.25" Power Series 2-way 4-ohm Coaxial Car Speakers

• 120 watts Peak Each, 60 watts RMS Each
• 1" Aluminum Dome offset cantilever coaxial mounted tweeters
• Polypropylene-Carbon Fiber Hybrid cone material
• Impedance: 4 ohm
• Sensitivity: 86.5 dB

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Install kits available for most vehicles

found car based on your search
Fits the following location in your 928
  • Rear Seat Side Panel
22
$219.99 /pair

In stock

Only 3 Left!

Used from: $186.99
Limited time!

Rockford Fosgate Punch P1 P152

160W Peak (80W RMS) 5.25" Punch Series 2 Way Coaxial 4-ohm Speakers

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160W Peak (80W RMS) 5.25" Punch Series 2 Way Coaxial 4-ohm Speakers

• 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

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Install kits available for most vehicles

found car based on your search
Fits the following location in your 928
  • Rear Seat Side Panel
27
$109.99 /pair

In stock

Used from: $93.49

Hertz DCX 87.3

120W Peak (60W RMS) 3.4" Dieci Series 2-Way Coaxial 4-ohm Car Speakers

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120W Peak (60W RMS) 3.4" Dieci Series 2-Way Coaxial 4-ohm Car Speakers

• 60 watts Peak Each, 30 watts RMS Each
• 3/5" PEI (Polyetherimide) Dome tweeters
• Water-repellent Treated Paper cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

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Install kits available for most vehicles

found car based on your search
Fits the following location in your 928
  • Front Door
4
List price $115.00
-13% $99.99 /pair

In stock

Limited time!

Hertz DSK 130.3

240W Peak (120W RMS) 5.25” Dieci Series 2-way 4-ohm Component Speaker System

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240W Peak (120W RMS) 5.25” Dieci Series 2-way 4-ohm Component Speaker System

• 120 watts Peak Each, 60 watts RMS Each
• 1" PEI (Polyetherimide) Dome-Cone tweeters with high-energy neodymium magnets
• Water-repellent Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

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Install kits available for most vehicles

found car based on your search
Fits the following location in your 928
  • Rear Seat Side Panel
List price $230.00
-13% $199.99 /set

In stock

Only 3 Left!

Kicker DSC40 (43DSC404)

240W Peak (60W RMS) 4" DS Series 2-way 4-ohm Coaxial Car Speakers

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240W Peak (60W RMS) 4" DS Series 2-way 4-ohm Coaxial Car Speakers

• 120 watts Peak Each, 30 watts RMS Each
• 1/2" PEI (Polyetherimide) Balanced Dome tweeters
• Polypropylene cone material with Extended Voice Coil (EVC) technology
• Impedance: 4 ohm
• Sensitivity: 88 dB

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Install kits available for most vehicles

found car based on your search
Fits the following location in your 928
  • Side Panel
2
List price $74.99
-13% $64.99 /pair

In stock

Limited time!

AudioControl PNW-525

150W Peak (100W RMS) 5.25″ PNW Series 2-way 3-ohm Coaxial Car Speakers

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150W Peak (100W RMS) 5.25″ PNW Series 2-way 3-ohm Coaxial Car Speakers

• 75 watts Peak Each, 50 watts RMS Each
• Hybrid Silk Dome tweeters
• Rigid Poly Mica cone material
• Impedance: 3 ohm
• Sensitivity: 88.41 dB

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Install kits available for most vehicles

found car based on your search
Fits the following location in your 928
  • Rear Seat Side Panel
1
List price $259.00
-8% $239.00 /pair

Available

Ships in 10-14 days

Limited time!

MTX Audio TERMINATOR52

140W Peak (70W RMS) 5.25" Terminator Series 2 Way Component 4-ohm Speakers

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140W Peak (70W RMS) 5.25" Terminator Series 2 Way Component 4-ohm Speakers

• 70 watts Peak Each, 35 watts RMS Each
• 1" Mylar Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 83.6 dB

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

found car based on your search
Fits the following location in your 928
  • Rear Seat Side Panel
5
List price $129.95
-69% $39.99 /set

In stock

Only 3 Left!

Limited time!

Infinity Primus 503CF (PR503CF)

300W Peak (100W RMS) 5.25” Primus Series 2 Way 3-ohm Component Speaker System

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300W Peak (100W RMS) 5.25” Primus Series 2 Way 3-ohm Component Speaker System

• 150 watts Peak Each, 50 watts RMS Each
• 3/4" Silk Edge Driven Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 91 dB

Free Speaker Accessory at Checkout!
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VIP Product Get $12.00 in rewards to spend later

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Install kits available for most vehicles

found car based on your search
Fits the following location in your 928
  • Rear Seat Side Panel
1
List price $149.95
-20% $119.95 /set

In stock

Limited time!

Cerwin-Vega V4

480W Peak (160W RMS) 4" Vega Series 2025 Edition 2-Way Coaxial 4-ohm Speakers

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480W Peak (160W RMS) 4" Vega Series 2025 Edition 2-Way Coaxial 4-ohm Speakers

• 240 watts Peak Each, 80 watts RMS Each
• 1/2" Silk Balanced Dome Tweeters
• Carbon Fiber Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 83 dB

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

found car based on your search
Fits the following location in your 928
  • Side Panel
1
$109.99 /pair

In stock

Hifonics ZS35CX

250W Peak (50W RMS) 3.5” Zeus Series 2-way 4-ohm Coaxial Car Speakers

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250W Peak (50W RMS) 3.5” Zeus Series 2-way 4-ohm Coaxial Car Speakers

• 125 watts Peak Each, 25 watts RMS Each
• 1" Neo-Mylar Soft Dome tweeters
• Alpha-Cellulose cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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Install kits available for most vehicles

found car based on your search
Fits the following location in your 928
  • Front Door
10
$24.99 /pair

In stock

Used from: $17.49

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    FAQ for Speakers in 1981 928

    Q: Can I upgrade or change the Speakers in 1981 Porsche 928?

    A: Yes this page includes all the best Speakers that work in your 928.

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

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