Rockford Fosgate RFK4

4 Gauge Amplifier Power Installation Kit

Product videos

• 4 Gauge Amplifier Power Installation Kit
• 100% Pure Crystal-Oxygen Free Copper
• 17 ft 4 Gauge Power Wire
• 3 ft Ground Wire
• ANL/Maxi Fuse Holder & Fuse

Learn more about the rfk4

We apologize

This item has been discontinued

Product Highlights

• 4 Gauge Amplifier Power Installation Kit
• 100% Pure Crystal-Oxygen Free Copper
• 17 ft 4 Gauge Power Wire
• 3 ft Ground Wire
• ANL/Maxi Fuse Holder & Fuse


Rockford Fosgate

Authorized dealer

Rockford Fosgate Premium Wire

General Features:

  • 4 Gauge Amplifier Power Installation Kit
  • Designed specifically for car audio systems up to 1000 watts
  • Premium power and ground wire provides optimal power transfer
  • Made from 100% oxygen-free copper for a pure uninterrupted transfer of power
  • Maxi Fuse holder offers ideal protection for high powered systems
  • True-to-Gauge cables/wires meet or exceed the industry standard of copper required for the gauge size
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Package Includes:

  1. 17 ft. of 4 AWG power wire
  2. 3 ft. of 4 AWG ground wire
  3. 20 ft. of 18 AWG remote wire
  4. Maxi fuse holder and fuse
  5. 100 amp fuse
  6. Cable Ties
  7. Butt connectors
  8. Spade Terminals
  9. Firewall Grommet

Check out the Rockford Fosgate RFK4 Owner's Manual

Specifications & Details

Amplifier Kit Specifications
Amp Kit Type
Number of Amplifiers Supported
Maximum Recommended Power Handling
Power/Ground Wire Size
4 gauge
Power Wire Length
17 feet
Power Wire Color
Ground Wire Length
3 feet
Ground Wire Color
Speaker Wire Included
Speaker Wire Gauge
Speaker Wire Color
Remote Wire Gauge
Interconnect (RCA) Signal Cables Included
RCA Cable Length
Fuse Holder
Fuse Size
Distribution Block Included
Complies to AWG Standards
Wire Material
OFC (100% Oxygen-Free Copper)
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Item Details


Model Number:




Internal SKU:


Internal Product ID:


Product and How-to Videos

  • 3Sixty3 Aftermarket Setup Wizard Tutorial
  • Why Should I Buy Oxygen Free Copper (OFC) Cable? | Car Audio Speaker and Amplifier Power Wiring

Customer Ratings & Reviews

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A Great Amp Kit

I would recommend this product to any one looking for an amp kit that provides you flexiblity quality durability and good power signal to your amp buy this kit you would not regret it and with sonic everyday low prices this amp kit by Rockford Fosgate is hard to pass up

By Audio on July 4, 2011


found this helpful.


Solid built and well made. Worth the money and I expect will last a long time. Sonic Electronix is outstanding!

By Brian K on March 3, 2014


found this helpful.

Best you can buy!

I bought this amp kit to power my Eclipse XA1200 amp which powers my Eclipse SW9102 titanium sub. I have no power issues at all using this cable. This stuff is thick and durable so don't go cheap and buy something else! Highly recommended to anybody!

By Donald on June 22, 2010


found this helpful.


This is the best wiring kit I have ever owned. I have had many wiring kits before and this is for sure the best. Real flexible.

By Brad on February 13, 2009


found this helpful.

Solid Wire!

This amp kit is great! A little bit more expensive than some kits but it will deliver solid, clean power to your system. The wire is without a doubt true to gauge and the accessories (rings, fuse, etc.) are of great quality!

By JW on April 21, 2013


found this helpful.

yup go rockford!

I bought this obviously to power my system, gauge seemed true as is all of Rockford's proclamations, i wish i would have gotten one that was 3 ft longer though. This would be great for a truck or a mid sized car, if your putting it in a Cadillac though get the 20 ft cable.

By Tim on March 10, 2012


found this helpful.


This Power and Ground kit is by far the best 4 AWG kit on the market, the wire is extremely flexible and is standardized, meaning it IS actually 4 AWG. It comes with butt crimp connectors to attach the remote wire and zip ties, All a great fuse holder. Highest quality I have ever seen. Make sure you buy replacement "MAXI" fuses, however.

By Gabriel on September 8, 2008


found this helpful.

No complaints.

Does what it is supposed to do. Easy to use. Everything you need.

By Dave on November 10, 2013


found this helpful.

Worth The Money

When you consider that this wiring kit extends your Rockford Warranty, it's a no brainier.

You have to have an install kit for your amp, and you want the good stuff, right? Get one!

By GravyGoodness on April 24, 2013


found this helpful.

Money well spent

rockford is known for its durability and design i highly recommend this amp kit. along with rockford RCAs u'll be surprised at how much more power u can get through ur system when it comes down to installation products u cant go wrong with rockford fosgate

By Kash on September 5, 2011


found this helpful.


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Essential add-ons
NVX V Series RCA Audio Interconnect Cable

V-Series: 5m (16.40 ft) 2-Channel RCA Audio Interconnect Cable



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Black Cable/Zip Ties

100 Pack Nylon 8" Black Cable/Zip Ties



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