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NVX XW4BK5

5 ft 4-Gauge EnvyFlex True Spec Oxygen-Free Copper Power and Ground Wire (Black)

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• 5 feet 4 gauge Power and Ground Wire
• Silver-tinned OFC (100% Oxygen-Free Copper) material
• Color: Black

Learn more about the xw4bk5
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2026-07-27 11:08:20
List price $29.99
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$19.99

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NVX - Worth the Envy - Direct to Consumer Car Audio

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Product Highlights


• 5 feet 4 gauge Power and Ground Wire
• Silver-tinned OFC (100% Oxygen-Free Copper) material
• Color: Black

Description


NVX brand icon

Authorized dealer

100% Oxygen-Free Copper Wiring

Here at NVX, we want to make sure you are getting the most for your money. We pride ourselves on providing quality products, especially our power and ground wires. All of our wires are made with 100% Oxygen-Free Copper with NO aluminum blend, unlike some of our competitors. Advantages to OFC include increased conductivity to carry more current to your amplifier, reduced strain on your vehicle’s electrical system, and improved heat absorption. Our power and ground wires are CTA-2015 compliant. At NVX, we are completely transparent with how many wire strands are in each cable, so you know exactly how thick each one is. Our competitors will never be that upfront with you.

Long-Lasting Design

Since our wires made with 100% OFC, we want to make sure that they last for a while and won’t corrode over time. That is why all our power/ground wires are silver-tinned, keeping them protected over time and not having to worry about them corroding. Like all of our other wires, the power/ground wires are engineered with our EnvyFlex technology. The outer jacket makes installation an easy process since it allows you to route the wire even in the tightest spots of your vehicle.

Not Just for Your Car

Looking to add an amplifier to your marine vessel? Our power/ground wires are BC-5W2 marine compliant making them useful on boats and off-road vehicles. These wires are built to withstand whatever the weather has to throw at them.

Product Details:

  • 4 gauge Power and Ground Wire
  • Made from silver-tinned OFC (100% Oxygen-Free Copper)
  • EnvyFlex True Spec wire for extremely flexible insulation
  • Up to 1500W RMS power handling capability
  • Exceeds AWG (American Wire Gauge) standards
  • BC-5W2 Marine Compliant for harsh environments
  • Available in other precut lengths
  • High Strand Count: 1862 strands for maximum conductivity
  • Length & Color: 5 feet (60 inches) | Black
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Frequently Asked Questions (FAQ)


Yes. For the best performance, grounds should be under 3 feet. This 5ft section allows you to reach a solid chassis bolt while keeping resistance low, preventing the "alternator whine" caused by long, thin ground wires.
Yes. The silver-tinned copper resists corrosion in engine bays. Replacing your factory 8-gauge alternator wire with this 4-gauge OFC will stabilize your charging system and reduce headlight dimming during heavy bass hits.
Do not cut the strands. Use NVX 4-gauge wire ferrules. This bundles all 1,862 strands into a solid cylinder, ensuring a 100% connection and preventing "stray strands" from shorting against your amplifier's chassis.
The EnvyFlex PVC is rated for high temperatures and is oil-resistant. To ensure a permanent solution, use split-loom tubing when routing near the engine block to protect the insulation from long-term heat fatigue.
No. While 4-gauge is high-quality, 2000W RMS requires more current than 4-gauge can safely pull. Solution: Upgrade to NVX 1/0-gauge (XW0BL5) to prevent the wire from overheating and your amplifier from clipping.

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Specifications & Details


Power / Ground Cable Specifications
Wire / Cable Type
Power / Ground Cable
Length (ft.)
5 feet
Wire Gauge
4 gauge
Primary Color
Black
Complies to AWG Standards
Yes
Wire Material
OFC (100% Oxygen-Free Copper)
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

NVX

Model Number:

XW4BK5

Weight:

2.17lbs

Internal SKU:

xw4bk5

Internal Product ID:

105317

Product and How-to Videos


Customer Ratings & Reviews


NVX XW4BK5 thumbnail image

5 star
100%
4 star
0%
3 star
0%
2 star
0%
1 star
0%



Durability
5
Value
5
Features
5
Design
5
Usability
5

Customer Photos & Videos


Customer Reviews

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NVX XW4BK5

Very flexible wire. Was a perfect fit into my Rockford Fosgate amp, and fused distribution block.

By Anonymous on June 28, 2018

39 found this helpful


Great Wire

This wire is very soft and flexible and the frosted black color adds a nice option for ground wire. Looks great with the Metallic cobalt blue I think it called that I got for my power wire.

By Edward on August 14, 2025 Checkmark Icon Verified purchase
2008 Ford Fusion

3 found this helpful


By ALFONSO on December 27, 2025 Checkmark Icon Verified purchase
2024 Toyota Tundra


Good quality

Good quality

By andres on April 6, 2025 Checkmark Icon Verified purchase


By Warren on November 28, 2024 Checkmark Icon Verified purchase




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