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Diamond Audio DMD35

80W Peak (40W RMS) 3.5” DMD Series Full Range Coaxial Car Speakers

Save 15% at Checkout with Code: Fall15
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80W Peak (40W RMS) 3.5” DMD Series Full Range Coaxial Car Speakers

• 40 watts Peak Each, 20 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohms
• Sensitivity: 84 dB

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FREE 3-day shipping to VA. Get it Wed, Oct. 4
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Save 15% at Checkout with Code: Fall15
found car based on your search
Fits multiple locations in your 1975 K25

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Was $109.99 Details
$99.99 /pair

In stock

Only 3 Left!

• 40 watts Peak Each, 20 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohms
• Sensitivity: 84 dB

Pioneer AVH-3500NEX

7” Single DIN Touchscreen DVD Multimedia Receiver with Bluetooth, Apple CarPlay and Android Auto

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7” Single DIN Touchscreen DVD Multimedia Receiver with Bluetooth, Apple CarPlay and Android Auto

• Single DIN Bluetooth DVD Multimedia Receiver
• 7" Touchscreen Display
• Apple CarPlay and Android Auto Compatible
• Three sets of 4 volts preamp outputs
• 13-Band Graphic Equalizer
• SiriusXM Satellite Radio Ready
• Advanced Sound Retriever

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FREE 2-day shipping to VA. Get it Tue, Oct. 3
found car based on your search
This product fits your 1975 K25
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VIP Product Get $70.00 in rewards to spend later

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$10.95 savings on install accessories you need

8
Was $800.00 Details
$699.99

In stock

Earthquake T46

600W Peak (300W RMS) 4X6” TNT Series 2-Way Coaxial Speakers with Mylar Tweeters

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600W Peak (300W RMS) 4X6” TNT Series 2-Way Coaxial Speakers with Mylar Tweeters

• 1" Mylar Dome Tweeters
• Poly-Coated Paper cone material
• Impedance: 4 ohms
• Sensitivity: 87 dB
• Mounting Depth: 2-5/16"

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FREE shipping to VA. Delivers Oct. 7 - Oct. 11
found car based on your search
Fits the following location in your 1975 K25

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1
Was $99.00 Details
$79.99 /pair

In stock.

Boss CH4630

500W Peak (250W RMS) 4"x6" Chaos Exxtreme Series 3-Way Coaxial Car Speakers

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500W Peak (250W RMS) 4"x6" Chaos Exxtreme Series 3-Way Coaxial Car Speakers

• 250 watts Peak Each, 125 watts RMS Each
• 1" Piezoelectric Dome Tweeters
• Poly injected cone material
• Impedance: 4 ohms
• Sensitivity: 90 dB

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Fast 3-day shipping to VA. Get it Wed, Oct. 4
found car based on your search
Fits the following location in your 1975 K25

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42
Was $44.99 Details
$34.99 /pair

In stock

Kicker DSC3504 (43DSC3504)

160W Max (40W RMS) 3.5" DS Series 2-Way Coaxial Car Speakers

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160W Max (40W RMS) 3.5" DS Series 2-Way Coaxial Car Speakers

• 80 watts Peak Each, 20 watts RMS Each
• 1/2" PEI (Polyetherimide) Balanced Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohms
• Sensitivity: 88 dB

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FREE 3-day shipping to VA. Get it Wed, Oct. 4
found car based on your search
Fits multiple locations in your 1975 K25

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9
Was $59.99 Details
$49.99 /pair

In stock

• 80 watts Peak Each, 20 watts RMS Each
• 1/2" PEI (Polyetherimide) Balanced Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohms
• Sensitivity: 88 dB

Boss Elite BE10ACP

10.1" Single DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay and Android Auto

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10.1" Single DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay and Android Auto

• Single DIN Bluetooth Digital Multimedia Receiver
• 10.1" Capacitive Touchscreen Display Display
• Apple CarPlay and Android Auto Compatible
• 3 sets of 4 volts preamp outputs
• 10-Band Equalizer with 5 User Presets

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FREE 3-day shipping to VA. Get it Wed, Oct. 4
found car based on your search
This product fits your 1975 K25
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$10.95 savings on install accessories you need

3
Was $543.00 Details
$399.99

In stock

Cerwin Vega H735

500W Peak (50W RMS) 3.5" HED Series 2-Way Coaxial Car Speakers

Save 10% at Checkout with Code: Fall10
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500W Peak (50W RMS) 3.5" HED Series 2-Way Coaxial Car Speakers

• 250 watts Peak Each, 25 watts RMS Each
• 1" PEI (Polyetherimide) Balanced Dome Tweeters
• Graphite-Injected Reinforced Spun cone material
• Impedance: 4 ohms
• Sensitivity: 84.5 dB

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FREE 3-day shipping to VA. Get it Wed, Oct. 4
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Save 10% at Checkout with Code: Fall10
found car based on your search
Fits multiple locations in your 1975 K25

empty

20
$54.99 /pair

In stock

• 250 watts Peak Each, 25 watts RMS Each
• 1" PEI (Polyetherimide) Balanced Dome Tweeters
• Graphite-Injected Reinforced Spun cone material
• Impedance: 4 ohms
• Sensitivity: 84.5 dB

Pioneer DEH-S4200BT

Single-DIN CD Receiver with Bluetooth and Amazon Alexa

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Single-DIN CD Receiver with Bluetooth and Amazon Alexa

• Single DIN Bluetooth CD Media Receiver
• Digital LED Backlit Display
• Advanced Sound Retriever (ASR) for improved sound
• 4-channel preamp outputs (4-volt front, rear/subwoofer)
• 13-Band Equalizer

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FREE 3-day shipping to VA. Get it Wed, Oct. 4
found car based on your search
This product fits your 1975 K25
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Dash Kit/Wire Harness available and sold separately

5
Was $140.00 Details
$114.99

In stock

• Single DIN Bluetooth CD Media Receiver
• Digital LED Backlit Display
• Advanced Sound Retriever (ASR) for improved sound
• 4-channel preamp outputs (4-volt front, rear/subwoofer)
• 13-Band Equalizer

Pioneer DEH-S6220BS

Single DIN CD Receiver with Bluetooth, Amazon Alexa and SiriusXM Ready

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Single DIN CD Receiver with Bluetooth, Amazon Alexa and SiriusXM Ready

• Single DIN Bluetooth CD Media Receiver
• Digital LED Backlit Display
• 3 sets of 4 volts preamp outputs
• 13-Band Equalizer
• SiriusXM Satellite Radio Ready
• Built-in Alexa

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FREE 2-day shipping to VA. Get it Tue, Oct. 3
found car based on your search
This product fits your 1975 K25
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VIP Product Get $16.00 in rewards to spend later

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$10 savings on install accessories you need

1
Was $190.00 Details
$159.99

In stock

• Single DIN Bluetooth CD Media Receiver
• Digital LED Backlit Display
• 3 sets of 4 volts preamp outputs
• 13-Band Equalizer
• SiriusXM Satellite Radio Ready
• Built-in Alexa

Rockford Fosgate Power T1462

180W Peak (90W RMS) 4x6” Power Series 2-Way Coaxial Speakers

Save $25 off Speaker Installation Accessories, Use Code: ACC25
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180W Peak (90W RMS) 4x6” Power Series 2-Way Coaxial Speakers

• 90 watts Peak Each, 45 watts RMS Each
• 1" Aluminum Dome Tweeters
• Carbon Fiber cone material
• Impedance: 4 ohms
• Sensitivity: 85.5 dB

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FREE 2-day shipping to VA. Get it Tue, Oct. 3
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Save $25 off Speaker Installation Accessories, Use Code: ACC25
found car based on your search
Fits the following location in your 1975 K25
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VIP Product Get $13.00 in rewards to spend later

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15
$129.99 /pair

In stock

Limited time!

Kicker CSC464

300W Peak (100W RMS) 4”x6” CS Series Coaxial Speakers

Price Drop, Instant Savings Already Applied!
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300W Peak (100W RMS) 4”x6” CS Series Coaxial Speakers

• 150 watts Max Each, 50 watts RMS Each
• 1/2" PEI (Polyetherimide) Balanced Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohms
• Sensitivity: 88 dB
• Mounting Depth: 5/16"

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FREE 2-day shipping to VA. Get it Tue, Oct. 3
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Price Drop, Instant Savings Already Applied!
found car based on your search
Fits the following location in your 1975 K25
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VIP Product Get $6.30 in rewards to spend later

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4
Was $79.99 Details
Save 21.29%
$62.96 /pair

In stock

Alpine Halo11 iLX-F511

11" Single DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, and Android Auto

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11" Single DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, and Android Auto

• Single DIN Bluetooth Digital Multimedia Receiver
• 11" Capacitive Touchscreen Display Display
• Apple CarPlay and Android Auto Compatible
• 3 sets of 4 volts preamp outputs
• 13-Band Parametric Equalizer
• SiriusXM Satellite Radio Ready
• Built-in HD Radio

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FREE 2-day shipping to VA. Get it Tue, Oct. 3
found car based on your search
This product fits your 1975 K25
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VIP Product Get $140.00 in rewards to spend later

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$10.95 savings on install accessories you need

Was $1500.00 Details
$1,399.95

In stock

Pioneer MVH-MS512BS

Single-Din Digital Media Bluetooth Car Stereo Receiver with Amazon Alexa

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Single-Din Digital Media Bluetooth Car Stereo Receiver with Amazon Alexa

• In-Dash MP3/USB Car Stereo Receiver
• 50W x 4 Chan. MAX • 17W x 4 Chan. RMS
• 3 Sets of 4V Preamp Outputs
• Compatible with Apple iPhone and. Android Auto

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FREE 2-day shipping to VA. Get it Tue, Oct. 3
found car based on your search
This product fits your 1975 K25
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VIP Product Get $15.00 in rewards to spend later

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$9 savings on install accessories you need

Was $170.00 Details
$149.99

In stock

• In-Dash MP3/USB Car Stereo Receiver
• 50W x 4 Chan. MAX • 17W x 4 Chan. RMS
• 3 Sets of 4V Preamp Outputs
• Compatible with Apple iPhone and. Android Auto

Pioneer TS-A879

450W Peak (100W RMS) 3.5" A-Series 2-way Custom-Fit Coaxial Speakers (Pair)

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450W Peak (100W RMS) 3.5" A-Series 2-way Custom-Fit Coaxial Speakers (Pair)

• 450 watts Max Each, 100 watts RMS Each
• 25mm PEI (Polyetherimide) Balanced Dome Tweeters
• Carbon Mica cone material
• Impedance: 4 ohms
• Sensitivity: 85 dB
• Mounting Depth: 1-3/8"

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FREE 3-day shipping to VA. Get it Wed, Oct. 4
found car based on your search
Fits multiple locations in your 1975 K25

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Was $90.00 Details
$69.99 /pair

In stock

• 450 watts Max Each, 100 watts RMS Each
• 25mm PEI (Polyetherimide) Balanced Dome Tweeters
• Carbon Mica cone material
• Impedance: 4 ohms
• Sensitivity: 85 dB
• Mounting Depth: 1-3/8"

Kenwood eXcelon KDC-X305

Single-DIN CD Multimedia Receiver with Bluetooth and Built-in Alexa (Sirius XM Ready)

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Single-DIN CD Multimedia Receiver with Bluetooth and Built-in Alexa (Sirius XM Ready)

• Single DIN Bluetooth CD Multimedia Receiver with USB and AUX
• LCD Text Display
• iPhone and Android Compatible
• 3 sets of 5 volts preamp outputs
• 13-Band Equalizer with Digital Time Alignment
• SiriusXM Satellite Radio Ready

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FREE 2-day shipping to VA. Get it Tue, Oct. 3
found car based on your search
This product fits your 1975 K25
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VIP Product Get $16.00 in rewards to spend later

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$10.95 savings on install accessories you need

3
Was $200.00 Details
$160.00

In stock

• Single DIN Bluetooth CD Multimedia Receiver with USB and AUX
• LCD Text Display
• iPhone and Android Compatible
• 3 sets of 5 volts preamp outputs
• 13-Band Equalizer with Digital Time Alignment
• SiriusXM Satellite Radio Ready

Lowest price in 30 days

Dual XDVD176BT

7" Single DIN Touchscreen DVD Multimedia Receiver and with Bluetooth

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7" Single DIN Touchscreen DVD Multimedia Receiver and with Bluetooth

• Single DIN Bluetooth DVD Multimedia Receiver
• 7" Touchscreen Display
• 3 sets of 4 volts preamp outputs
• 7-Band Equalizer
• Wireless remote control included

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FREE 3-day shipping to VA. Get it Wed, Oct. 4
found car based on your search
This product fits your 1975 K25
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$10.95 savings on install accessories you need

3
Was $219.99 Details
$109.99

In stock

Kenwood KFC-4675C

120W Peak (40W RMS) 4x6” 2-Way Car Speakers

Save $25 off Speaker Installation Accessories, Use Code: ACC25
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120W Peak (40W RMS) 4x6” 2-Way Car Speakers

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

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FREE 2-day shipping to VA. Get it Tue, Oct. 3
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Save $25 off Speaker Installation Accessories, Use Code: ACC25
found car based on your search
Fits the following location in your 1975 K25
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VIP Product Get $8.90 in rewards to spend later

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16
Was $110.00 Details
$89.00 /pair

In stock

Limited time!

Kicker CSC354 (46CSC354)

90W Peak (30W RMS) 3.5” CS Series 2-Way Coaxial Speakers

Price Drop, Instant Savings Already Applied!
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90W Peak (30W RMS) 3.5” CS Series 2-Way Coaxial Speakers

• 45 watts Max Each, 15 watts RMS Each
• 1/2" PEI (Polyetherimide) Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohms
• Sensitivity: 88 dB
• Mounting Depth: 1.687"

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FREE 3-day shipping to VA. Get it Wed, Oct. 4
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Price Drop, Instant Savings Already Applied!
found car based on your search
Fits multiple locations in your 1975 K25

empty

1
Was $69.99 Details
Save 22.90%
$53.96 /pair

In stock

• 45 watts Max Each, 15 watts RMS Each
• 1/2" PEI (Polyetherimide) Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohms
• Sensitivity: 88 dB
• Mounting Depth: 1.687"

Infinity REF-3032cfx

150W Max (50W RMS) 3.5" Reference Series 2-Way Coaxial Car Speakers

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150W Max (50W RMS) 3.5" Reference Series 2-Way Coaxial Car Speakers

• 75 watts Peak Each, 25 watts RMS Each
• 1/2" Textile Balanced Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohms
• Sensitivity: 91 dB

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FREE 3-day shipping to VA. Get it Wed, Oct. 4
found car based on your search
Fits multiple locations in your 1975 K25

empty

3
Was $129.95 Details
$54.95 /pair

In stock

• 75 watts Peak Each, 25 watts RMS Each
• 1/2" Textile Balanced Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohms
• Sensitivity: 91 dB

Pioneer DMH-WT3800NEX

9” Single-DIN Floating Touchscreen Car Stereo Receiver with Android Auto and Apple CarPlay

Price Drop, Instant Savings Already Applied!
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9” Single-DIN Floating Touchscreen Car Stereo Receiver with Android Auto and Apple CarPlay

• Single DIN Bluetooth Digital Multimedia Receiver
• 9" Capacitive Touchscreen Display
• Apple CarPlay and Android Auto Compatible
• Three sets of 2 volts preamp outputs
• 13-Band Graphic Equalizer
• SiriusXM Satellite Radio Ready
• Light and Dark Mode

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FREE 2-day shipping to VA. Get it Tue, Oct. 3
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Price Drop, Instant Savings Already Applied!
found car based on your search
This product fits your 1975 K25
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VIP Product Get $80.00 in rewards to spend later

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$10.95 savings on install accessories you need

Was $1100.00 Details
$800.00

In stock

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    why-shoping-with-sonic

    We love people and we're ready to help you! See what separates us from our competition.

    Take advantage of our VIP rewards like 10% back on your purchases, free 2-day shipping, extended warranties, and free returns! Gain access to all of these rewards without any membership fees.
    Get great discounted (and possibly FREE) installation accessories with most car stereo purchases. This includes dash kits, wiring harnesses and antenna adapters that you will need to properly install your new car stereo.
    We are an Authorized Dealer for all the brands we sell, including the most premium brands in car and marine audio such as Hertz, JL Audio, NVX, Rockford Fosgate, Kicker, Alpine, Kenwood and many more.
    Shop Deals and get up to 30% off premium brands! Shop Now! We are always looking out for the best products and deals to offer our customers. Don’t pay too much by shopping elsewhere!
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    Why Shop With Us?
    FAQ for your 1975 K25

    Q: Can I upgrade the factory stereo system in my 1975 GMC K25?

    A: Yes you can improve your sound in your K25 by upgrading your speakers and/or adding an amplifier. You may also be able to update the stereo and main display in your 1975 K25 if there is a dash kit and harness solution available.

    1975 GMC K25

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