Rockford RFK4X 4 AWG Complete Amplifier Install Kit

Awesome amp kit grate value for the money, easy to install. Really thick wire and delivers lots of power to the subs, grate fit.

Love this installation kit, good quality, looks great

There are many other detailed reviews on here, but let me just say that this kit rocks! I am not super techy or nerdy, but as a car buff, I recognize quality when I see it. And, this kit has it, plenty actually. Quick cliff notes for the ADD types: You get your moneys worth, and if you have a nice amp and sub, don't cheap out on the wiring.Let's first address the cost. You will find other 4AWG kits that are half price. Are you paying for the name, or something more? You ARE getting your moneys worth with this kit. The power and ground cables are pure copper. Cheaper kits are mixed with aluminum, which has more resistance than copper. So your "4awg" cable really isn't a TRUE 4 AWG cable. This kit, however, is. And, it's got a TON of copper strands, like 1,800 I think? Something rediculous, which leads into the next paragraph on why it's so flexible.People aren't joking when they say this stuff is flexible. Imagine the 4AWG power and ground cables are just super big Twizzlers, because that's how flexible the cables are! The power cable is plenty long enough. My amp is installed under the drivers seat (4 door sedan, battery on drivers side), and I had to cut about 4-5' off the power cable as it was just too long. Wow, I thought - I actually had cable left over? Murphy's luck usually leaves the cables 6" too short, but not this time. If you are wondering why the ground cable is only 3' long, it's because that's the recommend max length for a ground cable (Google it if you don't believe it). It was plenty long to find a seat bolt to ground to. The ends on the cable are very nicely, solidly crimped and heat shrunk on the ends. My car was lucky, and the bolt holes were a perfect fit! It was nice to see the holes a tad on the smaller side, as it's much easier to slightly enlarge the holes rather than have the ends too large for the bolt you're fitting it to, and it has that "slop" to it (very tacky and unprofessional to me)The RCA cables seemed too long at the time, but after running them on the OPPOSITE side of the power wire (To help avoid static noise), it turned out they were just perfect. The remote turn on wire was more than long enough. Again, I had to trim some off. I can't describe how awesome it is to have wire LEFT OVER, and not have to splice!My box/subwoofer has RCA plugs, so that was the ONLY additional wiring I had to purchase to fully install and wire my amp/sub kit. I had to order 2 additonal RCA patch cords (To run from the amp to the sub, the RCA cables that came with the kit go from the output of the headunit to the input of the sub). However, if your sub just has regular speaker wire hookups, have no fear - this kit includes quality speaker wire to run from the output of the amp to the sub, along with all the little ends and connectors. Yes, this kit comes with the mega huge 100amp fuse, but it's NOT pre-installed on the power cable. It's in the little baggie of odds and ends, so don't be a moron and give this kit 1 star because you thought they didn't give you a fuse (I'm not sure how you could miss that huge fuse in the bag, but whatever).The only thing I would change is that this kit does come with all crimp stuff, but I decided to go ahead and solder/heat shrink all my connections. The only thing I did not solder was the actual ends of the 4AWG cables, as it was crimped pretty dang solid and looked beautiful with the heat shrink wrapping already on it. My setup is a Pioneer AVH-P4300DVD with a JL 500/1 and a JL 10W6v2. I'm far from a millionaire, but I wasn't about to skimp on wiring with a quality amp/sub setup. This wiring kit is on par with the quality that comes from the JL amp and sub lineup.

The kit is great! I’m guessing the lowered ratings for the fuse was given by people that didn’t know to remove the emblem on the fuse casing and tighten the fuse in it with the tool provided. I thought it worked very well pushing power to my dual Rockford Fosgate punch P3 12’s, and my Rockford Fosgate P1000xbd mono amp. Which the amp is certified at 1477 watts. No issues at all, and highly recommended.

The media could not be loaded. So this amp install kit is a really solid kit and its easy to work with also it was $20 cheaper then other sellers so I would say amazing value for the money.it does include1) one 8gauge power cable which is 17ft long and that's the only complaint I have I wish it was a foot longer.2) one 8gauge ground wire which I would say is a little over a foot long3) one RCA cable which is 16ft long4) 60amp fuse and fuse holder5) one 16gauge speaker cable 30ft long6) one remote cable about 17ft long7) one bag of ring terminals and hardwareI would definitely recommend this product to friends and family. I attached a quick video of how I ran the kit in a 2025 toyota tundra

This kit is exactly what I was hoping it would be. I was very hesitant searching for the right set, because the main problems with wiring kits are:1. Not true to the specified gauge2. Made with aluminum, not 100% oxygen Free Copper (better conductor)This kit is both true 4AWG wire AND 100% OFC. It comes with a very nice red power cable and black ground cable, twisted RCA cables that reduce noise and distortion, very sturdy speaker wire and remote wire, an awesome 100A fuse in a sturdy fuse holder*, and every terminal piece you'll need to cleanly end your wires. On top of that, it is very affordable. I've looked at every wiring kit on Amazon, and I will say that this was the right choice. If you want your system running at its full potential, do NOT skimp on the wiring. Go big or go home. This kit will definitely help you go big.*NOTE: To tighten the fuse connections down, the silver piece on the plastic fuse holder pops out so you can tighten the screws! Took me a minute to figure out.

I bought this setup from best buy when I did my first car for a hundred bucks, but that was three years ago. I totaled that car since (R.I.P Ruby) and moved on to a civic SI. One of the first things I did was replace the radio and went for the same super quality parts I had before except it cost 120 at best buy this time so I looked for alternatives and here it was. Much cheaper. I don't think I need to speak on the quality as if you know Rockford Fosgate you know their quality is superb and you get every single penny that you paid for. The wires are long enough for everything.I had more than enough power, rca, and remote wire. My only problem was with the ground wire really which is about 14 in long. Though doing some reading I learned its best to have a shorter ground cable. This kit comes with everything you need. Apply that with a little know-how and you should be bumping along down the road.

Top quality product exactly what you would expect from a Rockford Fosgate product