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2025 Kia K4

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Universal gear includes car amplifiers, subs, and other products that do not install in a specific location or require fitment to integrate with a vehicle.

Overview Upgrade your Speakers Add a Subwoofer Add an Amplifier Digital Sound Processors Audio Installation & Accessories Dads & Grads Sale

Universal-Fit Audio for 2025 Kia K4

When thinking of universal gear, we consider products like a car amp that gives more power to your speakers or subs, cell phone chargers, equalizers and sound processors, rear-seat entertainment and video monitors, as well as dash cameras.

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Power and ground wire,
Subwoofers (1,127)
Amplifiers (926)
Subwoofers with a box (779)
Amplifiers with a wiring kit (437)
RCA cables and accessories (262)
Subwoofer enclosures (210)
Subwoofers with an amplifier and box (191)
Lighting accessories (176)
Subwoofer grilles (171)
Tweeters (Pro and special-fit) (151)
Amplifier wiring kits (140)
Speaker clamps and brackets (138)
Batteries (129)
Power and ground wire (129)
Fuses (123)
Backup cameras (119)
Speaker grilles (118)
Sound damping (105)
Subwoofers with an amplifier (101)
Alarm remote transmitters (96)
Handlebar and bar-mount speakers (96)
Line-out converters (88)
Fuse holders (81)
Speaker wire (73)
Replacement antennas (62)
Ring terminals (62)
Distribution blocks (58)
Light bars (58)
Connectors (56)
Speaker enclosures (52)
Bluetooth adapters and transmitters (50)
Speaker spacers and rings (50)
Bass remotes (49)
Cables and interconnects (49)
Dash cameras (39)
Sound processors (38)
Trim rings and universal mounts (38)
Alarms (34)
Stereo remote controls (33)
Recone kits (31)
Rocker and Button switches (31)
Circuit breakers (30)
Primary/Remote wire (29)
Battery isolators and relays (26)
Battery terminals (26)
Exterior lighting (26)
Installation accessories (25)
Audio test equipment (24)
Trigger output and bypass modules (24)
Alarm accessories (23)
Antenna extension cables (23)
Split loom and heat shrink (22)
Capacitors (20)
Diodes and resistors (20)
Knockout panels (18)
Equalizers (15)
Noise filters (15)
Terminal cups (14)
Battery terminal posts (13)
Rearview monitor and mirrors (13)
Adapters (12)
Radar and laser detectors (11)
Video adapters and switchers (11)
Speaker diaphragms (10)
Headlight bulbs (9)
Bass booster enhancers and processors (8)
Battery chargers (8)
Power inverters (8)
2-way and CB radios (7)
Amplifier mounting hardware (7)
Panel and clip removal tools (7)
Tweeters (7)
Voltmeters (7)
Blindspot cameras and sensors (6)
Carpet (6)
Gauge adapters (6)
Grommets and firewall bushings (6)
Headlights (6)
Passive crossovers (6)
Sensors (6)
Box ports (5)
Knockout panel mount hardware (5)
Line drivers (5)
Power supplies (5)
Steering wheel adapters (5)
Active Crossovers (4)
Bass Blockers (4)
License plates and frames (4)
Parking sensors (4)
Speaker baffles (4)
Amplifier cooling fans (3)
Big 3 upgrade kits (3)
Door panel clips (3)
Subwoofer (3)
Door actuators and poppers (2)
In-motion video/navigation bypass (2)
Radar detector mounts (2)
Rearview mirror mounts (2)
Video amplifiers (2)
Alarms with remote start (1)
Backup batteries (1)
Cable management (1)
Connector sets (1)
FM modulators and transmitters (1)
Multi-camera and DVR systems (1)
Overhead monitors (1)
Remote mount media players (1)
Price Range
Wire Gauge
The measurement of the diameter of wire. As the gauge number increases the size of the wire decreases. As the wire gauge number decreases, the diameter of the wire increases. For example, an 8 gauge wire is going to be larger than a 16 gauge wire.

When purchasing wire, make sure that you know what size, or gauge of wire is needed.
Length (ft.)
This the how long the item is. When purchasing an item that requires a specific length (such as RCA interconnect cables or speaker wire), please make sure that the length of the item is long enough for your needs.
Primary Color
This is the main color of the item.
Complies to AWG Standards
Since 1857, The AWG (American Wire Gauge) system has been the standard for measuring the diameter of wire. AWG standard is the measure of bare wire to find true gauge. Companies that do not follow AWG Standards include the thickness of the wire jacket which means the actual wire is not "True to Gauge".
Wire Material
The material that the wire is made of. Copper & aluminum are the most commonly used materials. OFC - Oxygen Free Copper is the ideal choice for wire material. Copper is a superior electrical conductor, & does not expand or contract with heat. CCA - Copper-Clad Aluminum is a suitable choice for lower powered or budget applications. The power transfer is not on par with OFC, but this material offers significant savings.
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Hertz HHP 14

Power and Ground Cable for SP4.900

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Hertz HHP 14

Power and Ground Cable for SP4.900

• Power and ground cable
• Use for installing Hertz SP4.900 amplifier
• Plug and play installation
• Color coded wires

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List price $125.00
-12% $109.99

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• Power and ground cable
• Use for installing Hertz SP4.900 amplifier
• Plug and play installation
• Color coded wires

Stinger SPW110TR500

500 Ft. 10 Gauge Pro Series 100% Oxygen Free Copper Power Wire (Red)

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Stinger SPW110TR500

500 Ft. 10 Gauge Pro Series 100% Oxygen Free Copper Power Wire (Red)

• 500 feet 10 gauge Power Wire
• OFC (100% Oxygen-Free Copper) material
• Color: Red
• Ultra flexible matte jacket

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List price $799.00
-32% $543.00

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• 500 feet 10 gauge Power Wire
• OFC (100% Oxygen-Free Copper) material
• Color: Red
• Ultra flexible matte jacket

JL Audio XD-BPW2-50

2 AWG 50 ft (15.2 m) Spool of Translucent Blue Power Wire

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JL Audio XD-BPW2-50

2 AWG 50 ft (15.2 m) Spool of Translucent Blue Power Wire

• True 2 AWG specification wire
• 2,940 strands of pure OFC Copper
• Tinned for corrosion resistance (marine-ready)
• Soft, flexible PVC Jacket

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• True 2 AWG specification wire
• 2,940 strands of pure OFC Copper
• Tinned for corrosion resistance (marine-ready)
• Soft, flexible PVC Jacket

Stinger SPW312RD

500 ft. 12 Gauge Pro Series OFC Power Wire (Red)

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Stinger SPW312RD

500 ft. 12 Gauge Pro Series OFC Power Wire (Red)

• 500 ft. 12 Gauge Pro Series Power Wire
• Pure (OFC) Oxygen Free Copper
• High current transfer and strand count
• Chemical and Temperature Resistant
• Color: Red

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List price $469.00
-38% $291.00

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• 500 ft. 12 Gauge Pro Series Power Wire
• Pure (OFC) Oxygen Free Copper
• High current transfer and strand count
• Chemical and Temperature Resistant
• Color: Red

Stinger SEASW8125

125 ft. 8 Gauge 100% (OFC) Oxygen Free Copper Marine Power/Ground Wire

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Stinger SEASW8125

125 ft. 8 Gauge 100% (OFC) Oxygen Free Copper Marine Power/Ground Wire

• 8 gauge Power / Ground Cable
• OFC (100% Oxygen-Free Copper) material
• Power and ground wires in a "Siamese Pair" construction
• Wires loaded on heavy duty wood spools
• Length: 125 feet (38.1 meter)

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List price $929.00
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• 8 gauge Power / Ground Cable
• OFC (100% Oxygen-Free Copper) material
• Power and ground wires in a "Siamese Pair" construction
• Wires loaded on heavy duty wood spools
• Length: 125 feet (38.1 meter)

Stinger SPW14TR

100 Ft. 4 Gauge Pro Series 100% Oxygen Free Copper Power Wire (Red)

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Stinger SPW14TR

100 Ft. 4 Gauge Pro Series 100% Oxygen Free Copper Power Wire (Red)

• 100 feet 4 gauge Power Wire
• OFC (100% Oxygen-Free Copper) material
• Color: Red
• Ultra-flexible matte jacket with 1666 strand count

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List price $619.00
-32% $423.00

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• 100 feet 4 gauge Power Wire
• OFC (100% Oxygen-Free Copper) material
• Color: Red
• Ultra-flexible matte jacket with 1666 strand count

DS18 MDSA10/4.30FT

30 Ft. 10-Channel Medusa Snake RCA Harness with 12 Gauge Power Wire

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DS18 MDSA10/4.30FT

30 Ft. 10-Channel Medusa Snake RCA Harness with 12 Gauge Power Wire

• 30-feet Medusa 10-channel RCA with (4) 12 gauge power wire
• Tiffany style 10-channel RCA
• 12 gauge oxygen-free copper power wire
• Water resistant, able to withstand harsh environments

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List price $215.99
-17% $179.95

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• 30-feet Medusa 10-channel RCA with (4) 12 gauge power wire
• Tiffany style 10-channel RCA
• 12 gauge oxygen-free copper power wire
• Water resistant, able to withstand harsh environments

Limited time!

Stinger SPW316BK

500 ft. 16 Gauge Pro Series OFC Power Wire (Black)

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Stinger SPW316BK

500 ft. 16 Gauge Pro Series OFC Power Wire (Black)

• 500 ft. 16 Gauge Power Wire
• Pure (OFC) Oxygen Free Copper
• Coated in high-quality PVC insulation
• Chemical and Temperature Resistant Jacket
• Color: Black

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List price $209.00
-33% $139.00

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• 500 ft. 16 Gauge Power Wire
• Pure (OFC) Oxygen Free Copper
• Coated in high-quality PVC insulation
• Chemical and Temperature Resistant Jacket
• Color: Black

Wet Sounds WW-4 BLK-125

125 Ft. 4 Gauge Amp Wet Wire Power Cable (Black)

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Wet Sounds WW-4 BLK-125

125 Ft. 4 Gauge Amp Wet Wire Power Cable (Black)

• 125 ft. 4-gauge amp wet wire power cable
• Made with 100% oxygen-free copper material
• Ultra-fine strand and soft outer jacket
• Marine and water compliant

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• 125 ft. 4-gauge amp wet wire power cable
• Made with 100% oxygen-free copper material
• Ultra-fine strand and soft outer jacket
• Marine and water compliant

T-Spec V8GT4B-100

100 ft 4-Gauge Power Wire (Blue)

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T-Spec V8GT4B-100

100 ft 4-Gauge Power Wire (Blue)

• 100 feet 4 gauge Power Wire
• OFC (100% Oxygen-Free Copper) material
• Color: Blue
• Super flex translucent jacket

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List price $359.00
-11% $319.99

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• 100 feet 4 gauge Power Wire
• OFC (100% Oxygen-Free Copper) material
• Color: Blue
• Super flex translucent jacket

T-Spec V8GT10BK-50

50 ft. 1/0 Copper Power Wire Matte Black

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T-Spec V8GT10BK-50

50 ft. 1/0 Copper Power Wire Matte Black

• 50 ft. of 1/0 Gauge Speaker Cable
• Super flex translucent jacket
• Made from 100% Oxygen Free Copper (OFC) Copper
• Color: Black

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• 50 ft. of 1/0 Gauge Speaker Cable
• Super flex translucent jacket
• Made from 100% Oxygen Free Copper (OFC) Copper
• Color: Black

T-Spec V10PW-1050

50 ft. (15.24m) 1/0 Gauge V10 Series Full OFC True Spec Power Wire

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T-Spec V10PW-1050

50 ft. (15.24m) 1/0 Gauge V10 Series Full OFC True Spec Power Wire

• Meets CEA and ANSI Specification for Wire Gauge
• Full Virgin OFC Copper Construction
• Ultra-flexible PVC Blended Jacket
• Color: Matte Pearl

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• Meets CEA and ANSI Specification for Wire Gauge
• Full Virgin OFC Copper Construction
• Ultra-flexible PVC Blended Jacket
• Color: Matte Pearl

JL Audio XD-RPW1/0-50

1/0 AWG 50 ft (15.2 m) Spool of Translucent Red Power Wire

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JL Audio XD-RPW1/0-50

1/0 AWG 50 ft (15.2 m) Spool of Translucent Red Power Wire

• True 1/0 AWG specification wire
• 4,704 strands of pure OFC Copper
• Tinned for corrosion resistance (marine-ready)
• Soft, flexible PVC Jacket

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• True 1/0 AWG specification wire
• 4,704 strands of pure OFC Copper
• Tinned for corrosion resistance (marine-ready)
• Soft, flexible PVC Jacket

Rockford Fosgate RFW8B

250 Foot Spool 8 AWG Frosted Black Wire

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Rockford Fosgate RFW8B

250 Foot Spool 8 AWG Frosted Black Wire

• Meets or Exceed AWG specifications
• Conform to the CEA-2015 industry standard
• BC-5W2 spec for use on boats and non-commercial marine vessels
• Pure Crystal-Oxygen Free Copper (PC-OFC)
• 8AWG (8.36mm²) 735 strands

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• Meets or Exceed AWG specifications
• Conform to the CEA-2015 industry standard
• BC-5W2 spec for use on boats and non-commercial marine vessels
• Pure Crystal-Oxygen Free Copper (PC-OFC)
• 8AWG (8.36mm²) 735 strands

Stinger SHW18B20

20 ft. 8 Gauge Hyper-Flex Oxygen Free Copper (OFC) Power Wire (Blue)

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Stinger SHW18B20

20 ft. 8 Gauge Hyper-Flex Oxygen Free Copper (OFC) Power Wire (Blue)

• 20 ft. 8 Gauge Hyper-Flex Power Wire
• 100% Oxygen-free copper conductor
• EIA-standard easy color-coded copper wires
• Hyper-twist construction
• Color: Translucent Blue

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List price $119.00
-58% $50.00

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• 20 ft. 8 Gauge Hyper-Flex Power Wire
• 100% Oxygen-free copper conductor
• EIA-standard easy color-coded copper wires
• Hyper-twist construction
• Color: Translucent Blue

Stinger SPW110TR

250 ft. 10 Gauge Pro Series OFC Power Wire (Red)

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Stinger SPW110TR

250 ft. 10 Gauge Pro Series OFC Power Wire (Red)

• 250 ft. 10 Gauge Pro Series Power Wire
• Pure (OFC) Oxygen Free Copper
• High current transfer and strand count
• Chemical and Temperature Resistant
• Color: Red

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• 250 ft. 10 Gauge Pro Series Power Wire
• Pure (OFC) Oxygen Free Copper
• High current transfer and strand count
• Chemical and Temperature Resistant
• Color: Red

DS18 MOFC4GA50P

50 Ft. 4 Gauge Ultra Flex Marine Grade Tinned Power Wire

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DS18 MOFC4GA50P

50 Ft. 4 Gauge Ultra Flex Marine Grade Tinned Power Wire

• 50-feet 4-gauge marine grade tinned power wire
• OFC (100% Oxygen-Free Copper) material
• Wiring for high performance applications
• Ultra-flex wiring for high flex and extra durability

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• 50-feet 4-gauge marine grade tinned power wire
• OFC (100% Oxygen-Free Copper) material
• Wiring for high performance applications
• Ultra-flex wiring for high flex and extra durability

Kicker PWB050 (46PWB050)

50 ft. 1/0 Gauge Cobalt Blue Power/Ground Wire

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Kicker PWB050 (46PWB050)

50 ft. 1/0 Gauge Cobalt Blue Power/Ground Wire

• 1 AWG power cable
• 50 foot
• virgin hyper-flex

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• 1 AWG power cable
• 50 foot
• virgin hyper-flex

Kicker 50PWBK020

20 ft 1/0-Gauge Warhorse Series Power Wire (Black)

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Kicker 50PWBK020

20 ft 1/0-Gauge Warhorse Series Power Wire (Black)

• 20 feet 1/0 gauge Power Wire
• OFC (100% Oxygen-Free Copper) material
• Color: Black
• Easily routable Hyper-Flex insulation

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List price $199.99
-5% $189.99

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• 20 feet 1/0 gauge Power Wire
• OFC (100% Oxygen-Free Copper) material
• Color: Black
• Easily routable Hyper-Flex insulation

Kicker KMWPR050 (47KMWPR050)

50ft Red 1/0 Gauge Red Marine Power Wire

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Kicker KMWPR050 (47KMWPR050)

50ft Red 1/0 Gauge Red Marine Power Wire

• Marine Rated Power Wire

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• Marine Rated Power Wire

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    FAQ for Universal-Fit Audio & Electronics in 2025 K4

    Q: Can I upgrade or change the Universal-Fit Audio & Electronics in 2025 Kia K4?

    A: Yes this page includes all the best Universal-Fit Audio & Electronics that work in your K4.

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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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