Customer Ratings & Reviews

Good Value

Ordered this for a Sebring convertible upgrade (140A stock alternator). Ordered on a Friday and received it on Tuesday - excellent/fast shipping! Product is EXACTLY as described. Although the wire is CCA (perfectly acceptable in this application) it is very nice. Jacketing is very supple and the cable is very flexible. On the fence if this is true 1/0 cable however - compared to some older L/A 2/0 wire the wire itself is the same size (this has zero impact on my positive review - look again at the price :-) ). Supplied accessories (down to the zip ties) were all very nice quality. If I had only thought ahead and ordered the crimping tool!!!

Great Upgrade Kit!

I needed to do a big 3 upgrade on my truck, and I chose this kit over others because of it's price. The quality is great, everything I needed was included in the kit, and it performs very well!

Not true 1/0 awg

More like 2 gauge wire. Everything works well aside from the fact that's its not 1/0 awg. Terminals a little big for wire but not a problem. Broke one terminal (my fault) went to store and bought 2 gauge terminals and they fit perfect.

Good

good thick wire but still flexible come with lugs and heat shrink for a clean install

a++ fast shipping

Great product works well and fast shipping. Would buy again.

Great Kit

This kit comes with everything you need to do the big three upgrade to your vehicle. I had a good bit of wire leftover from doing the upgrade to my 1992 dodge dakota. The CCA wire I great for places where you have to make a lot of bends with the wire. Overall a great kit I would recommend to anyone wanting to do the big 3 upgrade.

Belva big 3= awesome

I did my big three with the Belva kit and it improved my voltage massively. I use all Belva wiring and a Belva amp in my system and it sounds amazing. Get one and u will not regret it

Good stuff

Quality wire and some goodies for mounting it wherever. Good upgrade over your old battery cables

Great product

Great quality wires. Exactly what they said it was. Thanks

1000 to 1500.

1000 /1500. And you good with this one. To bad it not true 0. For the price you can't beat it.

Good Value

Great price for your 'big three' upgrade. Wires are easy to work with too.

great product

Comes with plenty of cable and is perfect for the big 3. It doesn't come with a fuse but for the price it's still cheap to get it separate anyway

GREAT PRODUCT FROM A GREAT SUPPLIER

Bought this as I needed to do the upgrade, at the same time I was upgrading my power and grounds for my amps to 0 gauge and I wanted all my wires to match. SE You guys ROCK!!!

By T&J on June 1, 2015 Verified purchase

great price

It worked out perfect! Geat value great product badass bro

Great product

great product , great price. Not true 0 gauge but for my application it's just fine. Speakers are so much louder and power is much greater.

Not that bad But!

THE RING TERMINALS ARE LOW QUALITY BUT OTHER THAN THAT IT'S OVER 4 STARS


THANKS

More than I expected

I got this because my cars headlights would dim when I would use my power windows. After installing (which was easy) I no longer have that issue and my audio speakers even sound better!

By Nick on July 13, 2017 Verified purchase

Works

I don't think the wire is true zero but it fixed my dimming lights and my voltage stays steady now. Overall pretty happy and would buy again

Belva BBG3KT

Comes with everything needed to improve the electrical system on your car. A must have for older cars being fitted with high wattage audio systems and such.

By Anonymous on June 12, 2018 Verified purchase

Belva BBG3KT

Seems to be very good quality for the price! Has been a great upgrade along with my 200amp alternator.

Great price

This product is greatly recommended to use when having a system in ur car! The upgraded thicker wires made a difference in the sound. the wires also helped out with the dimming of the headlight when u really cranking up the sound but I didn’t like the fact the kit didn’t come with an in-line fuse.

By Robert on February 21, 2020 Verified purchase

Thick

This is a good quality thick cable, others say Its small, its very big. If its not 1/0 guage, then its very close to it. It is double the size of my 4 guage power cable.

By Robert on January 15, 2020 Verified purchase

Good product!

If you are new to Sonic, they are the best in pricing and shipping fast. I finally got to install which was rather easy, after watching Sonic's great video on how to do it... LOL. I loved the flexibility of the wire which made it easy to route it to all points. There was enough wire left that I decided to buy more terminals and do the "Big 4"(alternator ground). It has helped a great deal maintaining voltage and the lights dim less than before. I will consider a Farad capacitor to help more.
After dealing with Sonic for 14 years, I can't imagine going anywhere else! Thanks guys!

By Fabio on October 6, 2020 Verified purchase

Belva BBG3KT

In my opinion this kit is a must have with any size audio system! Fairly easy to install depending on the vehicle. It is a great added protection and upgrade!

By Anonymous on April 11, 2019 Verified purchase

Belva BBG3KT

Just bought this kit , and it works great comes with everything you need rite down to the wire ties .

By Anonymous on June 9, 2018 Verified purchase

Belva BBG3KT

Quality Product! Great Price.. Included terminals made installation a breeze!!

Just the upgrade I needed

Very easy to work with
Great budget price
Cons none that I can think of I've used belva product before and never had a problem so far

By Dewan on January 30, 2017 Verified purchase

Everything you need

Everything you need to do a big 3 comes in this kit. Wire is very flexible. Comes with 3 ends already crimped.

BBG3KT

I love it. Couldnt be more happy. Delivers the power i need

Great product

Cables are well insulated! Fast shipping too! Very happy with this big 3 setup in my 1987 Monte Carlo SS

Belva BBG3KT

Nice kit for the price every thing I needed to have to install to my durango.

By Anonymous on May 29, 2018 Verified purchase

Belva BBG3KT

Not bad for the price...This is a budget minded kit!!

By Anonymous on May 13, 2018 Verified purchase

Great

Great product and is easy to install and has a great price

By Michael on March 7, 2022 Verified purchase

wonderful value, highly flexible power cable.

when the lights were dimming when the bass hit and capacitor was struggling to keep charged, I decided it was high time to do the Big 3. This kit offers Value and performance. supple highly flexible power wire was relatively easy to snake though the factory provided labyrinthic pathway.
Kit came with nearly enough power cable to do two vehicles. excellent value.
Don't really need the capacitor anymore, but it has digital volt readout, and gives me a bit of peace of mind knowing should a Xtrrra hefty bassline drop and sustain, there's power-a- plenty to keep my amplifiers happily running in top form, all thanks to Sonic Electronix carrying the Big 3 kit from Belva.

By Dylan on September 28, 2022 Verified purchase

Absolutely great value and product

I would highly recommend this to anyone that needs to do the Big 3 or 4. There’s plenty of wire and it looks to be great quality of cca wire. It’s thick and flexible best of all it gets the job done. Installed on an 07 Lexus es 350. Second time ordering this product

By Clarence on March 26, 2025 Verified purchase

quality cable easy install

Plenty of cable to allow for errors ???? I did not have the tool required to crimp the battery ends so i had to use a punch and hammer in my best efforts but all around great product wire was much denser than expected and it came with all the hardware to install

By ethan on November 4, 2025 Verified purchase

I installed the big 3 upgrade, I’m extremely pleased. All went well, & there was plenty of wire zip ties. I wish there extra end connections or Eyelit end connections. Three were purchased

By Frank on April 11, 2025 Verified purchase

Very fast shipping

By Cristian on February 24, 2025 Verified purchase

Sound

These were perfect for my application on my pathfinder

By Randall on January 20, 2025 Verified purchase

The Big 3 Kit

I love this big 3 kit very easy to put together it’s looks so professional work

By Daryl on November 30, 2024 Verified purchase

Nice to see glue lined boots

Nice kit with good terminals and glue lined boots. My only critique is to include a few more than 3 terminals. Least in my application there’s enough wire leftover for another ground or two.

By C on May 31, 2024 Verified purchase