Garage
Shop

NVX XBG3PK Big 3 Kit with True 0 Gauge 100% Oxygen-Free Copper - Customer Ratings & Reviews



5 star
91%
4 star
5%
3 star
1%
2 star
1%
1 star
1%



Durability
4.9
Value
4.8
Features
4.9
Design
4.9
Usability
4.8

Customer Reviews

Sort by:

Loading...

Great for the Price

Thick 4700 strand. Not as thick as Knu but it is so much cheaper and it is well worth the money. Great product. Heat shrink is a little dinky and lugs have small holes so it wasn't easy to find grounds.

By Jake on August 4, 2014

148

found this helpful.

Good Quality

Helps upgrade your stock cables to run your system better

By Johnny on November 9, 2014

139

found this helpful.

Does what it should!

I purchased this big3 because I needed to upgrade to 1/0 alt wiring for the 320amp DC alt coming in. Kit has everything you need besides a fuse and block, nice flexible high quality ofc wiring and sturdy terminals. Even on the stock alt just adding this wiring increased my output and really helped stabilize my voltage. Something that just about any audio system can benefit from.

By Robbie on August 14, 2014

134

found this helpful.

Awesome kit

This kit has the same amazing high strand silver tinned copper that NVX uses in their amp kits. It is super flexible and easy to work with. The ring terminals that are included i noticed are made of copper with some kind of chrome coating, and they are very good quality. You will need some sort of crimping tool though. The only thing I didnt like is they suggest that you put a fuze within 12 feet of your battery on the battery wire but there isnt one included with this kit but otherwise it is awesome.

By Machapu on June 26, 2014

130

found this helpful.

Great !!!

Good quality I will recommend this nvx product to anybody for the 3 upgrade

By fidel on August 14, 2014

133

found this helpful.

Love it

I ran this kit in a 2009 Aveo5 lt and it was very easy to work with and had plenty of wire to use. It made a major difference in the electrical system. I am running 2 Dc audio 12 inch level 4's and a hifonics 2400.1 d class amp and a hifonics 640.4 and not headlight dimming since I put this in the car.

By Smurf turf on October 28, 2014

125

found this helpful.

OK

its a nice true gauge ofc product that in my opinion is worth the price

By dain on November 23, 2014

125

found this helpful.

Big 3 done

Great wires, easy to install and gauge to spec, fits 0 gauge fittings perfectly. I also bought the NVX battery terminal connectors. Very happy with the quality of their products. Ended up with about 4FT extra wire.

By Jarred on August 10, 2014

121

found this helpful.

Great kit

This big three kit is awsome. I like how only one end of each wire has a terminal crimed on and not on both ends. Having the extra terminals to crimp on your own allows for a custom cut and crimp. I install car audio as a hobby for many of my friends and family. As well as their friends and relatives. I have used many kits, or custom made my own. This kit is extremely convenient and easy to use. It allows for custom cut and no need to purchase anything extra. Everything you could possibly need for a big three upgrade is in this kit. The wires are extremely flexible and will turn into tight corners. I like to hide as much wire as possible as I like a clean look. These wires were more than what I hoped and was looking for. I will most definitely be looking for spools of this wire for future audio installs.

By Michael on January 11, 2015

123

found this helpful.

big 3 kit

this is a great kit. I bought off ebay a 8 ton crimper to crimp the lugs that needed to be crimped after you get them to length. This kit fit perfectly over my new mechman alternator lug. The big 3 kit now gives me all the power I need. The wires were plently long enuff and install was so easy. Buy it...it just works.

By Honkytonkman on February 18, 2015

116

found this helpful.

Good Wire, But That's It

Awesome, true to spec wire, fairly flexible being that it's such a big wire. The kit came with everything I needed to do the big 3. Now for the bad part. The upgrade did absolutely nothing for my charging system, the only thing I done was managed to blow money on something that I didn't need, made no difference. It's all a sales gimmick, the only way I think it will make a difference is if your running a really h/o alternator in which you would be required to run larger gauge wire or melt the smaller gauge factory wiring, catch stuff on fire etc, but for a stock alternator? Your just wasting your money. But I can't give this product a low star review, it's wiring. The wire is great, just the purpose of the wiring is a waste of time & money for stock alternators. Bad purchase for my app, or any similar app running stock alternators, don't recommend big 3's for it, just trust me and don't make the mistake I did..

By Matt on July 5, 2014

100

found this helpful.

NVX Big 3

Got this product very quickly, for what you pay for its very good 1/0 OFC wiring and came with all necessary things for installation. I would recommend this product if your on a budget looking to improve your electrical.

By Drew on January 21, 2015

98

found this helpful.

Great Quality Wires For A Great Price

These wires work good with allowing a lot of juice to flow I got these wires when I ordered a 300 amp alternator cuz I added aa lot to my car audio, I gt 2 12 inch kicker comp vrs in a ported box with a 1000 watt ma audio mono amp plus 2 15 inch kickersolo baric L7s in a ported box with a 5000 watt planet audio mono amp which i bought that amp from this site as well
Its all great

By $JoKeR$ on February 25, 2015

93

found this helpful.

Great Quality Wires For A Great Price

These wires work good with allowing a lot of juice to flow I got these wires when I ordered a 300 amp alternator cuz I added aa lot to my car audio, I gt 2 12 inch kicker comp vrs in a ported box with a 1000 watt ma audio mono amp plus 2 15 inch kickersolo baric L7s in a ported box with a 5000 watt planet audio mono amp which i bought that amp from this site as well
Its all great

By $JoKeR$ on February 25, 2015

89

found this helpful.

good product

This item is good because you can get it all in one order. Its more expensive than ordering by the foot, the ordering terminals separate and all that. So it adds a bit of convenience. The cables are high quality. The terminal are also very good. Make sure you scrape, sand, or grind off the chrome finish . Its copper underneath.

Only thing that would make this kit better is if included a fuse holder and a fuse (like the competitor products) . The reason I chose this kit over the ones that include the fuse and holder, is this is OFC cabling. If your going to buy 0 gauge, no point buying crappy CCA.

Overall good value, would definitely buy it again in the future.

By Eat My @ss on February 8, 2015

89

found this helpful.

good easy kit to use

Comes with everything you need to install. Very easy to do bend.

By Taylor on May 13, 2015

76

found this helpful.

Awesome kit

The wire in this kit is top notch! The lugs and heat shrink made the install look professional. Wire also bends around corners very easily, I had read this in the reviews but I was surprised how easily it bends. Very happy with this kit. Five stars! Sonic was awesome as always

By Chris on March 24, 2015

79

found this helpful.

Great Quality Wires For A Great Price

These wires work good with allowing a lot of juice to flow I got these wires when I ordered a 300 amp alternator cuz I added aa lot to my car audio, I gt 2 12 inch kicker comp vrs in a ported box with a 1000 watt ma audio mono amp plus 2 15 inch kickersolo baric L7s in a ported box with a 5000 watt planet audio mono amp which i bought that amp from this site as well
Its all great

By $JoKeR$ on February 25, 2015

81

found this helpful.

nice oackage

Wire look nice comes in a good looking package all together

By bassbeast45 on February 22, 2015

82

found this helpful.

heavy duty

These are heavy wires the casing is packed I love them I want and need to get the amp wiring kit nvx and get rid of my old wires

By Joseph on March 26, 2015

74

found this helpful.

NVX 0 gauge

This product was amazing. It was think wiring along with it being OFC. The only thin is you will need a soldering kit for the terminals because you would not be able to crimp them.

By Reinaldo on May 16, 2015

62

found this helpful.

Fantastic value!

The quality of this cable is superb, it appears to be identical to the Kicker 1/0 hyperflex I ran front to back 5 years ago. It's REAL copper wire which is almost hard to believe considering the price of the kit vs how copper has skyrocketed in price over recent years. Of the 5 or 6 brands of 1/0 I have in my car and numerous others I've installed, NVX is now very near the top of my list.

The lugs included are also of very high quality. My only complaint is the holes were a few sizes too small for my application for everything but the alternator output post which was a tad too large. Nothing a vice and sharp drill bits couldn't fix though.

I spent hours shopping around for the best big 3 upgrade kit in terms of value, I firmly believe that this is it.

By Matt on May 1, 2015 Checkmark Icon Verified purchase

60

found this helpful.

AWESOME KIT!!

Quality is top notch, I was so impressed with this kit that I bought the 0 Gauge Amp kit...

By Shannon on July 1, 2015 Checkmark Icon Verified purchase

53

found this helpful.

Very High Quality Big 3 Kit

I don't think I can put the quality of this kit into words. NVX has done it again. I have yet to be disappointed in a single product from them. The tinned copper cables have a very high strand count. The copper in these cables is every bit of 1/0 ga. I would say it's actually a little larger than true 1/0. The jacket on the NVX cables is beautiful. It is just the right thickness to offer great protection and remain highly flexible. The terminals provided with this kit are the biggest I have ever seen. They are very thick. You will either need one heck of a crimper or be prepared to solder as I did. The lugs and jacket hold up very nice to the heat from the torch while soldering. My electrical system in my NNBS GMC Sierra Crew Cab is performing extremely well after big 3 upgrade with this kit. I'm running 2 amplifiers and my voltmeter doesn't budge at full tilt. Only time it drops is due to the GM voltage regulator on the newer trucks that supposedly helps the mpg. I can even hold down all 4 window buttons with stereo and A/C on and the voltmeter stays on same reading. Awesome. I've used plenty of other brands of cable and none of them come close to NVX. You will not regret buying this kit.

By DAVID on June 6, 2015 Checkmark Icon Verified purchase

50

found this helpful.

I used everything in the kit

Really great kit. The wires are very flexible. Also, the ring terminals are super heavy duty and perfect for soldering.

By Joshua on May 26, 2015 Checkmark Icon Verified purchase

50

found this helpful.

Thick

Nice thick cables. Haven't installed it yet. Waiting until I drop my engine.

By Flip on May 24, 2015

51

found this helpful.

Good Buy

Good product. Exactly how described and worked for what we needed it for.

By Cody on June 19, 2015 Checkmark Icon Verified purchase

50

found this helpful.

Great quality

Great product , super flexible and had more than enough material to correctly install.

By Ozzy on September 21, 2015

32

found this helpful.

Nice big 3

Nice product but Sonic customer service is a bit to be desired. Everything I've tried to order has a problem so buy the big 3 straight from nvx and save yourself the headache not messing with these people.

By Jay on October 11, 2015

30

found this helpful.

Awesome kit

Would deff. Recommend this product. Got more than enough wire to do the big three update. Still have low voltage at idle but its mainly due to H/O alt.

By Keng on April 4, 2018 Checkmark Icon Verified purchase

26

found this helpful.

OmG amazing!!!

This is oxygen free 100% pure virgin copper (OFC) that has been dipped in silver. I was using a diffrent cables that was OFC but it was also (CCA) Aluminum wire dipped in copper.

The difference in volts that I gained was 40% higher! So it is most certainly more efficient. Thank you NVX & thank you sonic electronix!!!!

By Big Lou on March 30, 2018

26

found this helpful.

NVX Big 3 Kit 100% OFC copper Hyper flex

PROS

Product is amazing Thick and very flexible great product easy to work with and comes with everything for a clean install

CONS

DOSE NOT COME WITH A FUSE HOLDER AND ANL FUSE SO GET YOURSELF A 300 AMP ANL FUSE AND FUSE HOLDER

By DannyWean2 on March 19, 2016

26

found this helpful.

Great buy

Product came fast and was top notch.. I'll def recommend this to anyone looking to optimize there electrical system

By Scrap on November 28, 2015

27

found this helpful.

Big wires

When it comes to do the big 3 this its the best kit you would find for the buck. I did a lot shoping around to find the best quality and price and it leads me to this nvx... Once I got it deliver and I check it out it totally impressed me on quality and flexibility... This its a top quality wiring brand at least I think so, for what I experience.. I like it so much that I also order a power and ground wires from nvx for my entire system ( jlhd 1200, jl 400/4, rf cap.hd10fard)
As far as imprubment it did, louder and clearer bass, louder mids and highs, the only think it didn't help much on dimming lights, it help some but I can still notece some dimming when playing it super loud... But as fur as big 3 upgrades this its the kit to get....

By ramon on October 31, 2015

27

found this helpful.

Best quality wire

This wire IMHO is better than knu and sky high and cheaper. Very flexible and slightly bigger spec.

You can not go wrong, and this kit gives you 14 feet total as opposed to every other company giving 12 feet.

By Anonymous on August 31, 2019

25

found this helpful.

Awesome kit, would recommend to anyone wanting to do the Big 3!

First thing, I was recommended to buy this product, and I truly thank the person who recommended it! I was debating whether or not to get the OFC or CCA, and OFC was definitely worth the extra buck! The kit was easy to install, and with only a few tools from home. Couldn't have asked for anthing better!

By xGETxPOWNEDx on June 20, 2017 Checkmark Icon Verified purchase

25

found this helpful.

The best!!!

This big 3 kit is hands down the best NVX wiring is the best I have worked with!! Very flexible and easy to work with!! All the connectors were easy to use and get more power and it eliminated the headlight dimming I was having!! Great product with an awesome price tag NVX is a great brand with awesome quality!!

By daniel on February 24, 2017 Checkmark Icon Verified purchase

25

found this helpful.

Great product. Love the brand nvx

Big three was a great upgrade. Worked perfect plenty of cable and ends. One of the best big 3 upgrade

By Clayton on January 14, 2016 Checkmark Icon Verified purchase

25

found this helpful.

Awesome Product!

This is a well put together kit that comes with everything you need for the Big 3 upgrade. High quality materials make for a clean install. I would highly recommend this kit to anyone looking to complete this upgrade.

By Anonymous on November 29, 2018 Checkmark Icon Verified purchase

25

found this helpful.

Excellent quality

Product did what it was intentionally designed for and help out my electrical system a lot!

By Anonymous on November 3, 2018 Checkmark Icon Verified purchase

24

found this helpful.

Big 3 Kit Is Awesome.!

Love this product, great wire, they send more then enough wire for the job.. No short cut’s anywhere.. highly recommend this to anyone installing a system no mater what size. Completely stop my voltage drops and light dimming. Thanks NVX.
Will be buying another one for future projects.

By James on February 23, 2018

24

found this helpful.

Awesome package deal!!!

This kit is amazing, it gives u everything u need all in 1 package so u can save money buying it all separate. If I'd had to buy all the pieces individually I'd have easily spent double!!!! Not to mention the quality of NVX wire it easily competes with fosgate, kicker, and Jl audio wire, it's just as good and the same amount of strands plus it's silver tinned to stop corrosion and for half the price!!! U can trust this company on any of their products and won't be disappointed!!!

By James on October 5, 2017 Checkmark Icon Verified purchase

24

found this helpful.

Works great on tundras

I was asking a lot from my stock alternator and batter playing 2100 watts rms. I read about doing the big 3 ad was hoping it would help. My idling current was 13.6 volts from the factory. After the big 3 I was seeing consistent 14-14.2 idling voltage on my digital distribution block. Highly recommend the big 3 upgrade to squeeze all you can from the factory set up.

Nvx 1/0 power wires were great quality, very flexible. I liked them so much I upgradedy 4ga supply wire for my amps to 1/0. Great products at decent prices

By Travis on November 25, 2016 Checkmark Icon Verified purchase

24

found this helpful.

Extremely high quality cable!

100% OFC cable was very flexible and easy to work with, and included good quality ring terminals allowing easy soldering.

By Andrew on March 4, 2016 Checkmark Icon Verified purchase

24

found this helpful.

Must have

This is a necessary upgrade for anyone interested in real power. I love the quality of the insulation and the flexibility to run anywhere. Had all the goodies included. Could have an anl fuse block for extra protection, but no biggie.

By Brian on August 2, 2020 Checkmark Icon Verified purchase

23

found this helpful.

Great Kit

I really like the NVX wire. Its flexible but not because it is lacking wire. I find that most flexible wire is lacking just that. Wire!!! You want the most amount of wire strands in order to carry the current. The jacket feels very well made and I like all the terminals and heat shrink you get along with the kit. Its overall a great value. Very happy with this purchase.

By Anonymous on September 8, 2018 Checkmark Icon Verified purchase

23

found this helpful.

NVX XBG3PK Big 3 Kit with True 0 Gauge 100% Oxygen-Free Copper

I would most def recommend this big 3 upgrade for the simple fact its a great price great company behind it and it works. Great quality of the wires very thick and true to size. I had enough wire in this package to actually make a big 4, by grounding my alternator. my only complaint is that the shrink wrap is not the best but I can live with it. .

By Anonymous on June 26, 2018 Checkmark Icon Verified purchase

23

found this helpful.

NVX XBG3PK Big 3 Kit with True 0 Gauge 100% Oxygen-Free Copper

Awesome product will no buy for every car i got.. love the performance from this kit.

By Anonymous on June 8, 2018

23

found this helpful.

Perfect purchase!

Cheaper than any other brand I could find, cheaper than some CCA 0 Gauge kits I've seen out there as well. would recommend

By briz on April 19, 2018 Checkmark Icon Verified purchase

23

found this helpful.

Great Value!

Good wire with great hardware! Definitely will be buying this kit again with my next build!

By Nate on March 28, 2018

23

found this helpful.

Works Great

Installed this on my 2017 Honda Accord. Voltage never drops below 13 volts with 3500 watts rms.

By Austin on March 17, 2018

23

found this helpful.

Great service and quality products !!!!!!!

Quality of product is as it was discribed. Also shipping was fast!!

By Lonnie on June 12, 2016

23

found this helpful.

Happy customer

This Big 3 setup kit is better than what I was hoping for. Its really is TRUE 100% OFC 1/0 AWG, that is very strong and flexible. I installed this on my 95 GMC Suburban K2500 and took me no more than 25 minutes (ripout and installation) to complete. Even had about 3 feet left over from the power wire and close to 2 feet left from the ground wire.

By Aaron stryker "washup eshe" on May 30, 2016

24

found this helpful.

Great Wire

I originally ordered the mechman big 3 upgrade to match the mechman high output alternator that I installed. But the mechman wires were crap! The 0 guage was so loose in the housing that you could pull strands out from the ends. Complete garbage. I ordered the nvx to replace and the quality was so much better.

By Craig on February 16, 2020 Checkmark Icon Verified purchase

22

found this helpful.

Night and day difference

Extra battery? Cap? NO!! BIG 3 all the way!! This is the best upgrade for a serious system. Quality product.

By cj on January 21, 2020 Checkmark Icon Verified purchase

22

found this helpful.

True 1/0 Gauge

I was happy to see that this product out shined the other options in the same category by having true 1/0 Gauge OFC Copper. Plenty of length for the runs, and made a run from opposite ends of the vehicle bay in my car from alternator to battery. Won't be a problem of too little wire for 99.9% of cars.

By Paul on January 3, 2020

22

found this helpful.

High Quality parts

The Quality of these wires was very high and had everything needed to install this straight into my car. Unfortunately, on my car the alternator is on the opposite end of the engine bay from my battery, so only one groud wire was long enough, but it was easily fixed by buying a second five-foot ground cable. Overall, a great product

By Anonymous on August 31, 2019 Checkmark Icon Verified purchase

22

found this helpful.

Great Price and High Quality Kit

This kit was a great value and well worth the price. The wires are true 0 gauge as indicated in the description and I would definitely buy this product again. It came will way more than enough wires and parts for the big 3 upgrade!

By Uriah on May 14, 2017 Checkmark Icon Verified purchase

22

found this helpful.

Tim

Its the Big3 at its best, high flex 100% OFC true spec. If you need power then you need this upgrade.

By Tim on December 4, 2015

25

found this helpful.

better than perfect.

This big 3 kit is amazing. Just like the 0 gauge kits. The wore is amazing and very easy to use.

By Joe on November 27, 2015

23

found this helpful.

Good value but not fully ready to install.

Good price for the material but it doesn’t come fit for my car and it doesn’t come fully ready to install which sucks because now I have to buy the tools just to prepare the wires so that I can install them. If I knew this beforehand I would have never bought it.

By Big Bear on January 26, 2021

21

found this helpful.

Great upgrade

If ur looking to upgrade ur electrical system this is the kit u need

By eusebio on August 15, 2020 Checkmark Icon Verified purchase

21

found this helpful.

great product

has the quality and good pricing, upgrade from stock charging system.

By Gregory on February 17, 2020 Checkmark Icon Verified purchase

21

found this helpful.

JUST GET IT!

True 0 gauge copper!! What more can you want!! You need this now and you won't be disappointed! Really great colors too!

By Andy on February 24, 2018 Checkmark Icon Verified purchase

24

found this helpful.

Great product

Wires size is true to its size, works great no issues.

By Noah on May 2, 2020 Checkmark Icon Verified purchase

21

found this helpful.

NVX XBG3PK Big 3 Kit with True 0 Gauge 100% Oxygen-Free Copper

come with every thing you need to do the big 3 upgrade and with quality wire

By Anonymous on November 27, 2019

22

found this helpful.

Awesome product

Came with more than I thought, had the wire, splitters, and fuse block I expected, but also came with different fuses for different amps. Definitely will buy again

By Nathan on April 9, 2018

20

found this helpful.

Worth every penny!

I was really pleased with this kit. Not only does it provide you with plenty of wire to work with, but to get all the extras in the kit for this price is hard to beat. It would be almost impossible to build your own kit with comparable products for the same price!

By Ron on March 16, 2018

20

found this helpful.

Good product!

Great buy for this item. Helped with my system and I'll be buying another set soon for another car!

By Meach on April 18, 2017 Checkmark Icon Verified purchase

20

found this helpful.

It's wire

Sonicelectronix offered me $5 off my next purchase if I reviewed my last purchase.. so here it is.
It's okay wire. Definitely not the best 0 gauge I've ever had, but certainly better than that copper clad aluminum garbage.

By Willis on April 26, 2022 Checkmark Icon Verified purchase

19

found this helpful.

Excellent quality

The kit came with all the needed hardware. Needed to grind down the connectors to fit my battery terminals. Other than that more than enough wire.

By Chad on August 19, 2020

19

found this helpful.

Good

This did help out with my issue, and it's a good buy, because all I had to do was connect it since the ring terminals are already on the wire ready to go. My battery post just uses a allen set screw for the bare wire end.

By Curt on April 5, 2016 Checkmark Icon Verified purchase

22

found this helpful.

By robert on October 25, 2022 Checkmark Icon Verified purchase

18

found this helpful.

By Giacomo on March 11, 2024 Checkmark Icon Verified purchase

Save up to 10 different vehicles in your garage

Loading...
Identify your vehicle and submodel details
  • Owner’s manual
  • Vehicle’s insurance card
  • Vehicle registration
  • Vehicle produced after 2005: Inside driver’s side door
  • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
Car Info Side Door Icon
Vehicle Registration Icon
Vehicle Insurance Icon