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Rockford Fosgate RFK4

4 Gauge Amplifier Power Installation Kit

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List price $129.99

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$62.99

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Bundled Savings with this Product

FREE Gift: 4 Gauge Amp Kit with Purchase!

Buy now and receive a FREE Rockford Fosgate RFK4 4 Gauge Amplifier Power Installation Kit. You're going to need a kit to install this amplifier!

62.99

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JL Audio JX1000/1D

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Rockford Fosgate RFK4

$62.99

Special Price $0 ($62.99 if purchased separately)

Rockford Fosgate RFK4

FREE Gift: 4 Gauge Amp Kit with Purchase!

Buy now and receive a FREE Rockford Fosgate RFK4 4 Gauge Amplifier Power Installation Kit. You're going to need a kit to install this amplifier!

62.99

15359

736

JL Audio HD750/1

$549.95

+

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Rockford Fosgate RFK4

$62.99

Special Price $0 ($62.99 if purchased separately)

Rockford Fosgate RFK4

FREE Gift: 4 Gauge Amp Kit with Purchase!

Buy now and receive a FREE Rockford Fosgate RFK4 4 Gauge Amplifier Power Installation Kit. You're going to need a kit to install this amplifier!

62.99

69570

736

JL Audio XD800/8v2

$639.95

+

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Rockford Fosgate RFK4

$62.99

Special Price $0 ($62.99 if purchased separately)

Rockford Fosgate RFK4

(Offer 1 of 3)

Combined Total Price

$379.95

You Save $62.99

Product 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
  • ANL 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
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

Amplifier Kit Specifications

Amp Kit Type
Amplifier installation kit come in two different types: Power or Complete. Power Amp kits are designed to only provide power to the amplifier. Complete kits will provide power and signal to the amplifier. Many of the complete kits will also include speaker wire to connect the amplifier to the subwoofer.
Power
Number of Amplifiers Supported
This is the number of amplifiers that the amplifier kit can support. If you are are going to be powering more than one amplifier, make sure that the installation kit will support them.
1
Power/Ground Wire Size
The power/ground gauge numbers represents the main wire size of the amplifier kit.

Definitions are as follows:

Gauge (wire) - The diameter of a wire. The higher the number, the thinner the wire. Example: 4 gauge wire has more strands than 10 gauge wire.

AWG (American Wire Gauge) - A standard of the dimensional characteristics of wire used to conduct electrical current or signals. AWG is identical to the Brown and Sharpe (B & S) wire gauge.
4 gauge
Power Wire Length
This is the length of the power wire in feet.
17 feet
Power Wire Color
Ground Wire Length
The length of the ground wire in feet.
3 feet
Ground Wire Color
Speaker Wire Included
If speaker wire is included, the value will be "Yes" and if no wire is included, it will read "No".
No
Interconnect (RCA) Signal Cables Included
Interconnect cables are required for amplifiers which are installed to the "RCA preamp low-level outputs" of a car stereo receiver. If your amplifier has high-level / speaker level inputs, then you do not need to purchase interconnects; however, interconnects offer a much higher quality sound when compared to speaker level inputs.
No
Fuse Holder
This is the type of fuse holder that is included in the item.
MAXI
Fuse Size
This is the size of the fuse that is compatible with the fuse holder. If the fuse needs to be replaced, be sure to replace it with the same size.
100A
Distribution Block Included
This means that the kit includes a distribution block in the package. This will assist in the installation of the amplifier kit or any situation where a distribution block is required.
No
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". For the best performance from your amplifier wiring kit, make sure that the cable complies to the AWG standard.
Yes
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.
OFC (Oxygen-Free Copper)

Specials with this Item

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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Summary of Customer Ratings & Reviews

Rating Distribution

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

Average Attribution Rating

Durability
5.0
Value
4.9
Features
4.8
Design
5.0
Usability
4.9
jovan

north plainfield, NJ

Overall
Durability
Value
Features
Design
Usability
Monster Cable

November 6, 2010

Ok so I didnt realize my Pioneer gm6400 power wire was undersized. requires 4awg and I had 10awg. My amp was cutting off at high decibels and kinda hot with my recently upgraded 6x9 momos thought I needed a bigger amp until I noticed the wire..
I installed this Kit and what a difference, I am getting 14v to the amp and now I can crank up the volume with no problems and the amp is barely warm.
Great product recommend for anyone with an amp and adtermarket speakers. Thanks Sonic

2 of 2 found this helpful

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Southpaw

Tylertown, MS

Overall
Durability
Value
Features
Design
Usability
Rockford 4 G wire

November 7, 2014

This is a great kit. I feel a person could buy this and never have any
problems. Buy this knowing you are going to get a high quality kit.
Just make sure it is the size wire you need.

0 of 0 found this helpful

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Athanasios

Canada

Overall
Durability
Value
Features
Design
Usability
Must have!

March 18, 2014

Your amp need more Power! get this and get it done!
I waited for this go on sale. I am glad I waited.

0 of 0 found this helpful

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Brian K

Midland, GA

Overall
Durability
Value
Features
Design
Usability
Perfect

March 3, 2014

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

0 of 0 found this helpful

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Dave

Little Rock, AR

Overall
Durability
Value
Features
Design
Usability
No complaints.

November 10, 2013

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

0 of 0 found this helpful

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GravyGoodness

Elm City, NC

Overall
Durability
Value
Features
Design
Usability
Worth The Money

April 24, 2013

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!

0 of 0 found this helpful

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JW

Atlanta, GA

Overall
Durability
Value
Features
Design
Usability
Solid Wire!

April 21, 2013

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!

0 of 0 found this helpful

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Tim

Coos Bay, OR

Overall
Durability
Value
Features
Design
Usability
yup go rockford!

March 10, 2012

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.

0 of 0 found this helpful

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Kingstevi13

La Marque, TX

Overall
Durability
Value
Features
Design
Usability
Amazing Kit

February 24, 2012

The wire in this kit is super thick, yet very flexible.

0 of 0 found this helpful

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Cc

Houston tx

Overall
Durability
Value
Features
Design
Usability
Great product

November 8, 2011

Great quality. Very thick!!! And flexible wire. Spend the extra and get quality. You will not be disappointed.

0 of 0 found this helpful

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Stevi

Houston,texas

Overall
Durability
Value
Features
Design
Usability
Great buy

September 9, 2011

I bought this kit and its rockford quality and very flexible.

0 of 0 found this helpful

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Kash

Long Island City, NY

Overall
Durability
Value
Features
Design
Usability
Money well spent

September 5, 2011

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

0 of 0 found this helpful

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Audio

Detroit, MI

Overall
Durability
Value
Features
Design
Usability
A Great Amp Kit

July 4, 2011

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

0 of 0 found this helpful

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B.R.

La.

Overall
Durability
Value
Features
Design
Usability
Great Kit

April 29, 2011

Really pleased with this product.
Great buy.

0 of 0 found this helpful

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Mod

CR,WA

Overall
Durability
Value
Features
Design
Usability
Plenty of cable

January 9, 2011

An excellent install kit with easy to work with cable. Very flexible due to it's multiple high strand count and tough but supple insulation.. I had to make some very tight turns and this cable worked great for that. Rockford makes sure you have plenty of extra cable and all the connectors needed for a custom wire length. A added plus is that it extends your FACTORY warranty when used in conjunction with a Rockford amp.(check specifics)

0 of 0 found this helpful

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john

CHANDLER, AZ

Overall
Durability
Value
Features
Design
Usability
TRUE 4 GAUGE...

January 4, 2011

The rockford system is always the TRUE guage vs other brands out there that have thick insulation and hardly no copper in fact some companies will pass 8 guage off as a 4 guage in their book and increase the insulation. Know when you buy rockford fosgate wiring you are truely paying for the copper.

0 of 0 found this helpful

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Smeade

South Bend, IN

Overall
Durability
Value
Features
Design
Usability
Good stuff

January 3, 2011

True 4 gauge like mentioned. It's all great quality and it's great power wire. And the price is the really good. A must buy

0 of 0 found this helpful

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Eddo

Hollywood CA

Overall
Durability
Value
Features
Design
Usability
Wiring kit that changed it all

December 30, 2010

Great flexible wires, true 4 gauge. I couldn't be happier with this wiring kit. I hooked it up to a Rockford T1000-1bcCP and it made a clear difference. I will stick to Rockford in my future audio set-ups and Sonic is going to be my choice of store.

0 of 0 found this helpful

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Brody

Canada

Overall
Durability
Value
Features
Design
Usability
Perfect Kit!

October 31, 2010

Kit comes with all the connections I needed to install the kit in my car (wires, connectors, etc.) the only problem I came into was because the wire is a TRUE OVERSIZED 4AWG, my 4awg terminals on my amp just barely fit the wires. But at least the advertising is true and definitely delivers some good power.

0 of 0 found this helpful

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Tim

Manchester, NH

Overall
Durability
Value
Features
Design
Usability
good kit

October 17, 2010

Installed this kit into my 03 GMC sierra 2500HD with no issues. It worked very well with the Rockford T600-2 amp that I was running.

0 of 0 found this helpful

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Accessory Tools and Products

Accessories added

NVX X-Series RCA Interconnect Cables

16.4 ft of X-Series 2-Channel RCA Audio Premium Interconnect Cable with Dual Twisted Pair Hyper-Flex Technology

Your Price $18.99

Scosche Distribution Block

Single 4 AWG input to four 8 AWG output distribution block plated in chrome

Your Price $4.99

Heavy-Duty Grommet

This Stinger heavy duty grommet is the perfect and safe solution to running wires through the firewall.

Your Price $5.99

Black Cable/Zip Ties

100 pack of 12" zip ties - These cable ties provide a secure installation of your cables and wires, as well as making installation simple and fast.

Your Price $5.99

Door Panel & Upholstery Remover Tool

Easily remove your door panels and other panels to make the installation of your new tweeters easy.

Your Price $5.99

Universal Window Handle Remover Tool

Remove your manual windows and door panels with this simple and convenient tool.

Your Price $9.99

Car Audio Installation Tool Kit

Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more.

Your Price $14.99

Browse 1 question and 4 answers
Hide answersShow all answers | Sort by
Why did you choose this?
Sonic Electronix Store
the price was right for a good brand OFC wire and it was true to size with a high strand count
Oscar E on Nov 12, 2014
Previously owned and will only purchase this amp kit from now on.
Sergio P on Aug 13, 2014
I love the brand and only needed a 4awg pwr and gnd. so this was perfect. I expect it to be top quality.
Dylan R on Sep 20, 2014
For the price, 100% (we all know is more like 95%) oxygen free cooper wire. Great for amp applications.
Juan G on Aug 2, 2014

Product Summary

Manufacturer

Model Number

RFK4

UPC

780687325503

Weight

4.50lbs

Internal SKU

rfk4

Internal Product ID

11196

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Rockford Fosgate RFK4