KnuKonceptz KCA Complete Oversized 4 Gauge 2 Channel Subwoofer Amp Installation Wiring Kit

(1366 Reviews)

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$33.48

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(30000 available )

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Reviews
  • Jacob Poole

    > 3 day

    Working good, remote wire on RCAs was shotty had to reinstall used speaker wire from the kit and it worked fine. After a month the fuse got oxidized too and had to get a new one but main wires (power,ground,leads) working well still

  • Mr. Houma

    05-06-2025

    Great fitment

  • Tyler St Onge

    > 3 day

    Good site exept one problem crap for heat fluctuations if this wire get cold what so ever the out side coating will crack leaving your wire bare and unprotected now if I should mention it could touch ground with would also mean fire so just watch out for cracking

  • Rich

    > 3 day

    I have bought from these guys several times and always good service and product. Great price too.

  • esteban

    > 3 day

    This is simply the best amplifier kit on the market.

  • dahnryman

    > 3 day

    This product was cheap and worked for about 6 months. i began to have problems and found i was only getting 3v at the amplifier. I had replaced head unit, subs, and the amp .... will use a volt meter next time.... spend the money and buy good wire.

  • Alex

    > 3 day

    This was exactly what I needed to hook up my system, the perfect amount of wires and perfect length, I had plenty of speaker wire left, I used maybe 5 feet and it came with much more, The thickness of the batt cable makes it so you can put a slamming system in, capable to run a few 18 Subs if you wanted, however I just have a 1500 watt amp that powers a 10 MTX 4ohm sub, need less to say the one thing Ill never worry about failing would be the wires, good but for a good price

  • Edward

    > 3 day

    This product is amazing, it made upgrading my sound system as a beginner an absolute breeze. I highly recommend it to anyone who wants to improve their car audio, but doesnt have the experience or parts to put together a kit on their own. This kit included everything I needed and more, and really helped me get through my first experience with car audio. It has also proven to be extremely durable, as its been in my car for almost a year now with no real issues.

  • dwane licorish

    Greater than one week

    RCAs arent the best but you get what you pay for

  • Review4YOU

    > 3 day

    wire is true 4ga. RCA cables seem to be durable, worth the extra money for the quality product.



The KCA Kable (Kolossus Copper Aluminum) is the next generation of our Copper Clad Aluminum (CCA) power and ground cables. The new KCA 4 Gauge uses 29.44mm^2 of Copper Clad Aluminum (CCA) to transfer current from your battery to amplifier. Copper Clad Aluminum (CCA) is made up of 90% Aluminum and 10% Copper. The KCA 4 Gauge Kable used throughout this kit offers incredible flexibility and a rugged PVC outer jacket that is impervious to grease and oil. The PVC outer jacket can withstand extreme temperatures (-40 to 105 C).

KnuKonceptz KCA 4 Gauge Complete 2 Channel Amplifier Installation Kit

The KCA-K4 Amplfier Installation Kit Includes:

  • 18" 4 AWG Blue KCA Kable (CCA) Power Wire
  • 3" 4 AWG Black KCA Kable (CCA) Ground Wire
  • Inline fuse holder with 80A fuse
  • 5 Meter Bassik Twisted Pair OFC RCA Cable
  • 20 Feet Bassik 14 AWG CCA speaker wire
  • 5 Meter Blue Remote / Turn one wire
  • 2 gold plated 4 gauge ring terminals, 2 gold plated 4 gauge spade terminals
  • grommets and wire ties

How many watts can this amp kit handle? At KnuKonceptz, we do not use "watts" to rate our amp kits. This is a very inaccurate method to determine what the proper gauge wire required for your amp installation. Many amp manufactures do not represent the output of their product accurately in watts. Please refer to your amplifier"s fuse rating, this is a number a manufacture can not fake, well they could but it would put their product in harms way! Add up the fuses on the end of your amp (two 30A fuses = 60A total draw) If this number is under 80A, this kit will fit your application. If over 80A, a larger gauge wire would be required or use our Kolossus Flex 4 gauge amp installation kit.

Beware of "1600 Watt" amp kits that include a 50 or 60A fuse. Its physically impossible for these kits to support this load (refer to our comparison photo)

Do not use on loads over 100A, for this we recommend the KnuKonceptz Kolossus 4 Gauge amp kit, which uses Oxygen Free Copper.

KCA 4 Gauge - Oversized for higher loads vs other CCA cables


Our Kolossus Copper Aluminum (KCA) series cable was designed specifically to be larger than the competition. Copper Clad Aluminum is less conductive than Oxygen Free Copper when comparing like sized conductors. CCA however is also much less expensive. So by increasing the area in our KCA cable, KnuKonceptz was able to achieve similar performance to OFC, but without the higher cost.

For this exact reason is why our cable is larger, to achieve similar performance, for less money. The graph below shows, based on area, our cable is at least 40% larger than comparable brands.

Bassik Twisted Pair 2 Channel RCA Cable

Our Bassik RCA is just that, a straight forward design.

Bassik RCA Features include:

  • Oxygen Free Copper construction
  • Twisted Pair Geometry for noise rejection
  • Ultra Flex, soft touch PVC allows this cable to fit in tight places
  • Easy channel identification
  • Gold Plated RCA Connectors.

About KnuKonceptz KCA Power Wire and how it compares to other cables

  • Using American Wire Gauge standards, the gauge of stranded wire is determined by the total area of the conductor.
  • To calculate this you would take the area of each strand and add it together. This area, in square mm, then determines gauge.
  • Diameter is not as critical with stranded wire, this is due to the tiny air gaps between each strand. Diameter may fluctuate with strand size and how tightly wound the rope of the cable is.
  • The smaller the number, the larger the wire, until you reach zero or aught (0). From zero, you then have double aught (00), three aught (000) and so on.
  • Based on AWG, the true gauge of this cable is #3, larger than traditional 4 gauge

  • We"ve compared several popular 4 gauge amp kits from other manufactures. The above chart displays the manufacture and the calculated gauge based on area.
  • All cables tested were labeled as 4 gauge. The X axis indicates gauge by area and where each cable"s measurement placed itself on the American Wire Gauge scale.
  • Several brands barely reached the required area of 8 gauge.

Every KnuKonceptz amp installation kit clearly states these critical specs:

  • Wire type - CCA or OFC
These materials are commonly used, but not commonly stated when shopping online. Know what you are purchasing. Both metals are capable of performing up to their rated loads.
  • American Wire Gauge
Wire gauge is crucial to powering your system correctly. Undersized cable will create unsafe conditions and may shorten your amplifier"s life
  • Max Load (amps)
Wire"s ampacity changes with gauge and materials. KnuKoncept does not rate cable based on watts. Amplifier manufactures do not always truthfully state the output of their product, check your on board fuses!

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