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Rockford Fosgate RFK8i

8-gauge amplifier power and signal wiring kit

Item # 575RFK8I

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$59.99

About the Rockford Fosgate RFK8i

This wiring kit does not include speaker wire, so you'll need to purchase that separately to complete your amp installation. This kit includes patch cables for a 2-channel or mono amp — you'll need to add cables for multi-channel amps.

Your amp needs big power wires in order to deliver top performance to your sound system. Rockford Fosgate's RFK8i amplifier power and signal wiring kit supplies everything you'll need to send power and input signals to amplifiers with fuse ratings of up to 60 amperes. Rockford Fosgate makes the 8-gauge cable from 100% pure crystal-oxygen free copper wire so you can count on maximum signal transfer.

Product highlights:

  • amplifier wiring kit
  • cables meet or exceed the American Wire Gauge specifications and requirements
  • 17 feet of 8-gauge power cable
  • 3 feet of 8-gauge ground cable
  • 20 feet of 18-gauge turn-on lead wire
  • one 16-foot twisted pair RCA patch cable
  • AGU fuse holder and 60-amp fuse
  • assortment of wire termination hardware and cable ties
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # RFK8I

What's in the box:

  • One 17' Power cable (8-gauge) in a red translucent jacket (has an in-line 60A fuse/fuse holder and a ring terminal on the battery end)
  • 3' Ground cable (8-gauge) in a translucent gray jacket (with a ring terminal on one end)
  • 16' Twisted pair RCA patch cord
  • 20' Turn-on lead in a blue jacket
  • Ten 4" wire ties
  • 1 Plastic grommet
  • 5 Plastic butt connectors
  • 6 Female quick slide connectors
  • 5 Male quick slide connectors

Customer reviews

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Rockford Fosgate RFK8i reviews

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More details on the Rockford Fosgate RFK8i

Mark G.

Product Research

Features

General Overview: This is a single amplifier wiring kit that includes the power and ground cables, turn-on lead, one pair of stereo RCA cable and accessories required to install one amplifier. Speaker wire is sold separately.

High Strand Power/Ground Cable: The power and ground cable are 100% Pure Crystal-Oxygen Free Copper (PC-OFC) and meet or exceed AWG (American Wire Gauge) requirements.

In-line Fuse Holder: The included in-line fuse holder attached to the power cable comes with a 60-amp AGU-type fuse.

Patch Cord: Twisted pair cable design is used for noise rejection, a split center pin helps secure the connections at both ends.

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Customer Q&A

Q
Crutchfield asked: Why did you buy this?
A
Rockford Fosgate is a good brand, and I received a discount for ordering with the Rockford Fosgate amp. [ Justin  Aug 14, 2019 ]
A
Add on recommend [ Justin  Jun 20, 2019 ]
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Recognizable brand. Good reviews. On sale. [ Justin  Jun 04, 2019 ]
A
All-in-one design [ Jim  May 21, 2019 ]
A
But the Kit!. Piece meal will cost you more in time and money [ Mark  May 07, 2019 ]
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Best quality product around [ Jesse  Feb 09, 2019 ]
A
Rockford Fosgate is the best brand out there, they're my go to brand [ Jose  Feb 06, 2019 ]
A
It's $10 more than the Crutchfield brand and includes an RCA patch cable. I bought one of the Crutchfield cable kits for my powered sub and was down at the audio store dropping $25 on the same RCA cable that's in the RF package. Live and learn I guess. [ Michael  Jan 12, 2019 ]
A
Because I hope it will be the appropriate cabling required for the job. [ Carlos  Jan 05, 2019 ]
A
It was on sale. [ Anthony  Dec 31, 2018 ]
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we used a similar product when we installed an amp last time....amp was stolen and wires cut...so we're replacing them [ Kari  Dec 23, 2018 ]
A
Because it's a good brand [ Gilberto  Dec 18, 2018 ]
A
Rockford fosgate will handle bass that kids these days listen to. [ THOMAS  Dec 02, 2018 ]
A
It looks easy to install in my honda fit [ Sean  Nov 21, 2018 ]
A
this was my sons choice after researching thoroughly [ Kirk  Oct 15, 2018 ]
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to mach up speaker brand [ MICHAL  Oct 03, 2018 ]
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It matched the 2ohm speaker I was looking at [ William  Sep 28, 2018 ]
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Needed this to run the powered sub. Got this model since it includes the rca cables [ Christopher  Sep 26, 2018 ]
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Crutchfield assistant recommended [ Michael  Sep 19, 2018 ]
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good price and extends warrenty= no brainer [ Robert  Sep 18, 2018 ]
A
Quality kit! [ Juan  Sep 14, 2018 ]
A
Recommended by Customer Service Adviser. [ Tim  Aug 13, 2018 ]
A
price and longer amp warranty [ Scott  Aug 09, 2018 ]
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I heard it was reliable and easy to install. [ Miguel Angel  Aug 05, 2018 ]
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Recommended by crutchfield [ Henry Cuevas  Aug 03, 2018 ]
A
hook up amp [ Max  Jul 18, 2018 ]
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Sticking with rockford [ Chase  Jul 18, 2018 ]
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Bought same sub wiring kit before and had no issues. [ David  Jun 21, 2018 ]
A
Cause i love Fosgate [ Chris  Jun 15, 2018 ]
A
better price than Crutchfield wiring kit [ Mark  Jun 14, 2018 ]
A
quality of kit. same kit was cheaper elsewhere, but other seller had pkging issues or components missing [ Theresa  May 30, 2018 ]
A
In my opinion it just works to match OEM products if available. (ie Rockford Fosgate Amp, Speakers, Cables) Who knows their products better than the manufacturer? Maybe Crutchfield! I trust their advisors because Crutchfield has never steered me wrong. [ CHRISTOPHER  May 29, 2018 ]
A
this kit hasa everything to connect the amp and sub I bought at a good price plus free shipping [ Dustin  Apr 22, 2018 ]
A
It's what I need. [ Aviel  Apr 05, 2018 ]
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Reviews [ W  Mar 31, 2018 ]
A
rca's included, rockford fosgate components installed [ David  Mar 22, 2018 ]
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amplifier installation [ Brian  Mar 12, 2018 ]
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It came with the RCA for only $10 more. [ Corey  Mar 06, 2018 ]
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Recommended by Garrett [ Zachary  Mar 02, 2018 ]
A
everything I needed is in the kit and the pricing is reasonable. [ reuben  Feb 26, 2018 ]
A
Everything I need to complete the installation. [ Tracy  Feb 21, 2018 ]
A
To compensate overpriced Rockford Fosgate AMP that Ive ordered along with this. $30 Off with the combo makes me feel better I ordered amp here for 30 bucks more than on amazon. Then this wire kit being 70 bucks? Its okay. I just want the signal wire to be installed in the harness by your techs, if possible and I dont mind anything at all. [ Erik  Feb 06, 2018 ]
A
It includes RCAs so I don't have to buy those separately, and I like the inline fuse block as opposed to the spade fuse block. No real reason, just "old school" of me I guess. [ Anthony  Jan 26, 2018 ]
A
I was looking for a complete kit and I've purchased Rockford Fosgate products in the past and loved them! [ matthew  Jan 03, 2018 ]
A
Based on reviews and tech data. Seemed like plenty of power for the 10" sub I intend to use. [ Andrew  Dec 26, 2017 ]
A
I chose Rockford Fosgate because of their extended warranty and the products are known for great quality. [ Jeff  Dec 14, 2017 ]
A
Had lots of good reviews.Nice package deal [ Jimmy  Dec 14, 2017 ]
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Recommendation from an expert of the Crutchfield team [ phillip  Dec 12, 2017 ]
A
complete kit [ eric  Dec 10, 2017 ]
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To go with my Rockford Fosgate subwoofer for my truck. [ Alan  Dec 05, 2017 ]
A
made installing my sub very easy [ clifford  Nov 28, 2017 ]
A
FOSGATE RECOMMENDS USING THERE WIRING KIT. IF IT'S WHAT THEY RECOMMEND THERE MUST BE GOOD REASONS FOR IT. EVERYTHING WORKS BETTER IF ITS IN HARMONY TOGETHER [ Robert  Nov 25, 2017 ]
A
Heavy 8 gauge copper wire will insure the wiring does not get hot no matter how loud I play my 300W amp subwoofer in the car. Comes with everything I need to install my subwoofer with amp. [ David  Nov 18, 2017 ]
A
reinstalling subwoofer in different car [ Martin  Nov 18, 2017 ]
A
The name Rockford means a lot in the car audio game. Can trust that Rockford will put out a safe product. [ Aaron  Oct 09, 2017 ]
A
Good quality wire with plenty of length for even a large SUV. Comes with everything you need and nothing you don't. [ CODY  Sep 23, 2017 ]
A
Warranty and I know it will all fit. [ JAMES W SCALES  Sep 21, 2017 ]
A
My grandson picked it for his car. It was the best choice and price for his stereo system. [ Ina  Sep 15, 2017 ]
A
Jenny recommended in chat [ robert  Jun 16, 2017 ]
A
came with eveything i needed including patch cable [ Joshua  Jun 14, 2017 ]
A
The price seems right and I trust Crutchfield. [ David  Jun 01, 2017 ]
A
Good brand at good price... and it fits what I want. [ WILLIAM  May 31, 2017 ]
A
Talked to Allison on the tech line and she helped me get just what I needed. [ Brian  Apr 30, 2017 ]
A
I needed an amp wiring kit, and this came with RCA cables. Plus it was a little less expensive then buying the kit and RCA cables separately! [ John  Apr 28, 2017 ]
A
Good price been using Rockford since the 90's [ Stephen  Apr 27, 2017 ]
A
it was recommended by a crutchfield professional. [ MANUEL  Apr 25, 2017 ]
A
No need to shop anywhere else, the Crutchfield Name and Products you can trust. [ DEAN  Apr 22, 2017 ]
A
he picked it [ Ildelisa  Apr 12, 2017 ]
A
Everything i need all in one packade for the amplified sub i got [ R  Apr 12, 2017 ]
A
Great product [ william  Apr 09, 2017 ]
A
great reviews [ scott  Apr 06, 2017 ]
A
I chose this because it was a complete kit that I needed to wire a subwoofer and an amplifier. [ Easton  Apr 06, 2017 ]
A
Decent price [ Joseph P.  Mar 17, 2017 ]
A
I know its a great brand and will also pack a punch [ Josue  Mar 08, 2017 ]
A
I have a rockford fosgate r500xd1 mono amp for the same money I got name brand instead of crutchfield's brand. Muy bueno, great price for high quality product [ David  Mar 03, 2017 ]
A
Like the Rockford products [ Devin  Feb 23, 2017 ]
A
I went with this amp install kit because it includes everything to install the amp into the vehicle. The only thing it does not include is the speaker wire to connect to the sub but that can be found anywhere from a brick and mortar store to online. [ Carter  Feb 22, 2017 ]
A
Love Rockford Fosgate, always wonderful product [ Lance  Jan 06, 2017 ]
A
Great reputation and good experience with RF. [ JERRY  Jan 05, 2017 ]
A
To push my focals [ Justin  Dec 30, 2016 ]
A
Product reputation [ John  Dec 20, 2016 ]
A
Reputation and sales rep said it was a good idea [ Mark  Dec 15, 2016 ]
A
Recommended by my Crutchfield Advisor - David. [ Adam  Dec 13, 2016 ]
A
suggested by advisor [ Michael  Dec 01, 2016 ]
A
Top grade wiring kit [ RYAN A  Nov 26, 2016 ]
A
Included power and speaker cable. Was recommended with subwoofer purchase [ Martin  Nov 19, 2016 ]
A
Fosgate has been around a long time and has always had quality gear [ Norman  Nov 15, 2016 ]
A
i need wires [ Alexander  Oct 19, 2016 ]
A
for amp installation and discount [ Glenvall  Oct 02, 2016 ]
A
Rockford Fosgate is consistent with their quality, and definitely don't want to skip quality on a subwoofer setup for my sisters car [ Ken  Sep 30, 2016 ]
A
because they are the best! [ Daniel  Sep 13, 2016 ]
A
Main power cable length [ Alexander  Sep 06, 2016 ]
A
seems convenient and good reviews [ Normandy  Aug 06, 2016 ]
A
Because it was what we needed to install my son's equipment [ Wesley  Aug 04, 2016 ]
A
I had JL audio and rockford fosgate equipment installed in my Bullitt mustang. The sound was amazing, I will always roll with JL audio and rockford fosgate forever period!! [ CURTIS  Aug 02, 2016 ]
A
I chose this because of customer reviews and recommendations. [ Gregory S.  Jul 25, 2016 ]
A
Reliable, complete and compatible with the powered subwoofer I purchased. [ Christopher M.  Jul 24, 2016 ]
A
Good price and reviews [ Julio  Jul 24, 2016 ]
A
Because it's Rockford Fosgate. No other reason. [ BENJAMIN KEITH  Jul 15, 2016 ]
A
Extended warranty. [ STEVEN T  Jul 01, 2016 ]
A
To extend the warranty on the RF amplifier. [ Albino  Jun 28, 2016 ]
A
Because of Rockford's top notch reputation. [ Eric C.  Jun 04, 2016 ]
A
This kit is a good price. [ Margaret  May 19, 2016 ]
A
I chose this wiring kit for my vehicle due to having a 3' long ground cable. I really wish an off the shelf kit came with a 4'-5' ground so it it would be easier to find a nearby bolt to ground to rather than tapping new holes into the body. [ BRETT  May 16, 2016 ]
A
quality kit at a good price [ Kelly T.  May 08, 2016 ]
A
Ratings [ Jon  Apr 30, 2016 ]
A
Price was good for these outstanding cables. This kit came with all of the items that I needed to install my powered sub woofer. [ DAVID E  Apr 14, 2016 ]
A
Needed a new sub install kit and this looked to be of good quality and match my powered sub from fosgate. Also would extend the fosgate warranty of my sub for using this kit. (power wire is all copper not copper clad aluminum) [ Guest  Apr 02, 2016 ]
A
Choose the right install wiring for your product, particularly a sub. Dont' skimp or you will be sorry. Recommended by adviser. [ Andy  Mar 28, 2016 ]
A
Speaker and amp all in one, and matched [ Michael  Mar 27, 2016 ]
A
Ease of installation [ CHRIS  Mar 26, 2016 ]
A
easy [ JEFF  Mar 15, 2016 ]
A
Past experience [ Donald  Mar 10, 2016 ]
A
I wanted to make sure this kit was adequate for my installation [ Jeremy  Mar 08, 2016 ]
A
I love Rockford Fosgate [ Dalton Ryan  Mar 05, 2016 ]
A
Recommended by Abe Abe's Bio: http://www.crutchfield.com/Support/Bio.aspx?bio=156 [ Steve  Mar 05, 2016 ]
A
Love Rockforg Fosgate products [ ariel  Feb 27, 2016 ]
A
I accidentally ordered the 10 gauge and needed the 8 gauge and the kits are very similar and were recommended by the advisors on crutch field. [ Rafael  Feb 17, 2016 ]
A
This powered sub got good reviews, and through those reviews I believe I made the right choice. Rockford Fosgate is a reputable brand that I trust as well. [ Rodney  Feb 12, 2016 ]
A
Suggest on site and I need the wiring kit. If not I would have had to buy the kit at a local audio shop. [ Dennis  Feb 10, 2016 ]
A
I have used ROCKFORD FOSGATE products in the past and they have worked very well for me. Their kits are complete and have everything you need to do you your installation. Instructions are well written too! [ steve  Jan 21, 2016 ]
A
Way better deal than buying seperate. I love the way Crutchfield has everything you need at a click of the button. It's like they read my mind. [ Chad  Jan 12, 2016 ]
A
Because to me the top of the line that sounds real good and the last long [ Erik  Jan 09, 2016 ]
A
Rockford Fosgate has always been a trusted manufacture. [ Taylor  Jan 08, 2016 ]
A
needed for installation [ Christopher  Jan 06, 2016 ]
A
recommended by advisor, to make the install very simple [ Gregory  Jan 05, 2016 ]
A
This kit has all that I need to install the amp. Also, using a Rockford Fosgate wiring kit with a Rockford Fosgate amp extends the amp warranty by 1 year (subject to change). Cannot beat that! [ Brandon  Dec 23, 2015 ]
A
Rockford Fosgate has always been loyal in quality plus you get what you pay for. [ Steven  Dec 18, 2015 ]
A
Reputation and sale price! [ CRAIG  Dec 18, 2015 ]
A
Love Fosgate products [ Ronald  Dec 16, 2015 ]
A
To connect my amp. [ Matthew  Dec 16, 2015 ]
A
Looking for a Christmas present for my daughter and knew the Crutchfield gang wouldn't let me down! [ Stanley  Dec 15, 2015 ]
A
Good reputation and price drop made product comparable to Amazon's price. [ Steve  Dec 15, 2015 ]
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3 questions already asked

Q
How many watts from an amplifier can this handle?
[ Brad  May 13, 2018 ]
1 answer
A
The 8-gauge amp wiring kit is best suited for amplifier's producing around 300-600 watts RMS. For more details or help figuring out which kit is best suited for your amp(s), please contact an Advisor directly by phone (888.955.6000) or online chat. Thanks!
[ Larry  May 29, 2018 ]  Staff
Q
Are the power wire/s long enough to mount amp in 3rd row seat side storage of 2008 Sienna?
[ J  Aug 06, 2017 ]
2 answers
A
Yes the power wire and remote turn on wire should be long enough for that mounting position
[ HALYN  Aug 09, 2017 ]
A
Hey JC; I'm going to say "probably not" to that if you're running completely hidden. I used this kit for trunk mounting in a '99 Beetle routing it properly hidden under and behind panels. I had a bit over 12" to spare. Routing it hidden eats up cable very quickly. Hope this helps. John W.
[ John  Aug 08, 2017 ]
Q
2015 mazda 3 with bose system wiring?
[ Olivia  Jul 13, 2015 ]
1 answer
A
For details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle.
[ Krissy  Jul 13, 2015 ]  Staff

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