Garage
Shop

See all parts that fit your 2016 6

XS Power Big 3 Upgrade Kit (BIG3XS)

XP FLEX 1/0 AWG Big 3 Upgrade Kit with 100% OFC Wire

XS Power
Shop all XS Power
Product videos
highlight-star-icon

• Use to Upgrade Your Factory Power and Ground Wire
• More Effective Than Capacitors When Experiencing Dimming Lights
• Vehicle's Electrical System Will Run More Efficiently
• Use for Systems 350A or Less
• Comes With All Needed Wiring
• Ring Terminals are Pre-Connected to Power and Ground Wire

Learn more about the xsp-big3xs

We apologize

This item has been discontinued


Loading...
72-5602 main

Metra 72-5602

Install New Front Kick Panel Speakers in select 2009-2024 vehicles from Ford, Mazda, Lincoln

43
-20.01%

$11.99

List price $14.99

82-7501 main

Metra 82-7501

Speaker Brackets for select 2013-2023 vehicles from Mazda - Pair

3
-48.85%

$21.99

List price $42.99

T2652-S main

Rockford Fosgate Power T2 T2652-S

400W Peak (200W RMS) 6.5" Power Series 2 Way Component 4-ohm Speaker System

42
51KSC3504 main

Kicker KSC35 (51KSC3504)

200W Peak (100W RMS) 3.5" KS Series 2 Way Coaxial 4-ohm Speakers

4
-11.11%

$79.99

List price $89.99

P1650 main

Rockford Fosgate Punch P1 P1650

220W Peak (110W RMS) 6.5" Punch P1 Series 2 Way Coaxial 4-ohm Speakers

61
XSP652 main

NVX XSP652

600W Peak (200W RMS) 6.5" X-Series 2 Way Coaxial Car Speakers

19
-33.34%

$119.99

List price $179.99

Limited time!
46CSC354 main

Kicker CSC35 (46CSC354)

180W Peak (60W RMS) 3.5” CS Series 2 Way Coaxial 4-ohm Speakers

16
-30.71%

$51.96

List price $74.99

C1-650x main

JL Audio C1-650x

100W RMS 6.5" C1 Series 2 Way Coaxial 4-ohm Car Speakers

42
C1-650 main

JL Audio C1-650

100W RMS 6.5" C1 Series 2 Way Component 4-ohm Car Speakers

30
P1675 main

Rockford Fosgate Punch P1 P1675

240W Peak (120W RMS) 6.75” Punch Series 3 Way Coaxial 4-ohm Speakers

48

Product Highlights


• Use to Upgrade Your Factory Power and Ground Wire
• More Effective Than Capacitors When Experiencing Dimming Lights
• Vehicle's Electrical System Will Run More Efficiently
• Use for Systems 350A or Less
• Comes With All Needed Wiring
• Ring Terminals are Pre-Connected to Power and Ground Wire

Description


XS Power brand icon

Authorized dealer

  NVX VCW Series
NVX
XBG3PK
XS Power
XS Power
BIG3XS
100% OFC 
For Systems 350A or Less
CEA Compliant
BC5W2 Marine Compliant
Premium Pure Copper Ring Terminals 
Warranty
Limited Lifetime
1 Year Manufacturer's

 



What's In The Box?
  • 2 x 4' 1/0-gauge ground cables with ring terminals
  • 1 x 6' 1/0-gauge power cable with ring terminals
  • 10 x wire clamps
  • 10 x screws
  • 10 x zip ties
  • 3 x additional ring terminals

General Features:

  • 100% OFC 1/0 Gauge Big 3 Upgrade Kit for Audio Sytems up to 350 Amps
  • Use to upgrade your factory battery ground wire, alternator ground wire and alternator power wire
  • Use to solve issues with dimming lights
    • More effective than a capacitor when experiencing dimming lights
  • Makes electrical system run more efficiently
    • Deeper bass
    • Amps run cooler and are less likely to go into protect mode
  • Use for systems 350A or less
  • Thick but flexible 100% AWG Oxygen Free Copper wiring
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty


Check out the XS Power BIG3XS Installation Procedure


Loading...
BV850ACP main

Boss Elite BV850ACP

6.75" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto with Backup Camera

5
Limited time!
46CSC654 main

Kicker CSC65 (46CSC654)

600W Peak (200W RMS) 6.5” CS Series 2 Way Coaxial 4-ohm Speakers

122
-33.36%

$79.96

List price $119.99

DMH-1800NEX main

Pioneer DMH-1800NEX

6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto, and SiriusXM Ready

2
-16.67%

$349.99

List price $420.00

iLX-W650 main

Alpine iLX-W650

7" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay and Android Auto (SiriusXM Ready)

123
-5.72%

$329.95

List price $349.95

Club 322F main

JBL Club 322F (SPKCB322FAM)

150W Peak (50W RMS) 3.5" Club Series 2 Way Coaxial 3-ohm Speakers

1
-27.29%

$79.95

List price $109.95

DMH-W4660NEX main

Pioneer DMH-W4660NEX

6.8" Double DIN Digital Multimedia Receiver with Bluetooth, Wireless Apple CarPlay, and Android Auto (SiriusXM Ready)

2
-20.00%

$599.99

List price $750.00

43DSC6504 main

Kicker DSC650 (43DSC6504)

480W Peak (120W RMS) 6.5” DS Series 2-way 4-ohm Coaxial Car Speakers (DSC6504)

28
-10.53%

$84.99

List price $94.99

DB652 main

Polk Audio DB652 (DB 652)

600W Peak (200W RMS) 6.5" DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers

12
-9.16%

$109.00

List price $119.99

Limited time!
Club 622 main

JBL Club 622

360W Peak (120W RMS) 6.5" Club Series 2-way Coaxial 3-ohm Speakers

5
-28.58%

$99.95

List price $139.95

MPK 163.3 main

Hertz MPK163.3

600W Peak (300W RMS) 6.5" Mille PRO Series 3-way 4-ohm Component Speaker System

2
-14.89%

$999.99

List price $1175.00


Best selling similar products

BBG3KT small

Belva BBG3KT

• Upgrade Your Factory Power and Ground Wire
• Perfect for Dealing with Dimming Lights
• Improve the Efficiency of Your Vehicle's Electrical System
• Use for Systems 250A or Less
• Includes All Necessary Wiring
• Ring Terminals are Pre-Connected to Power and Ground Wire

(48)

$49.99

List price $79.99

XBG3PK small

NVX XBG3PK

• Upgrade Your Factory Power and Ground Wire
• Perfect for Dealing with Dimming Lights
• Improve the Efficiency of Your Vehicle's Electrical System
• Use for Systems 350A or Less
• Includes All Necessary Wiring
• Ring Terminals are Pre-Connected to Power and Ground Wire

(91)

$109.99

List price $119.99

Item Details


Manufacturer:

Model Number:

BIG3XS

Weight:

6.10lbs

Internal SKU:

xsp-big3xs

Internal Product ID:

74887

Product and How-to Videos


  • XS Power Big 3 Upgrade Kits
  • How To Install the Big 3 Upgrade | Improve Your Vehicle's Electrical Charging System | Car Audio

Customer Ratings & Reviews


XS Power Big 3 Upgrade Kit (BIG3XS) thumbnail image

5 star
92%
4 star
8%
3 star
0%
2 star
0%
1 star
0%



Durability
4.9
Value
4.9
Features
4.7
Design
4.9
Usability
4.9

Customer Reviews

Sort by:

Loading...

chameleon impala

This is the real deal. Before doing the big 3 I was having big voltage drop...I was going down to .9 wjich Iis very bad. Now I dont drop below tweleve. I advise if you have headlight dimming or big voltage drops. I will say do the big 3 (with good wire like this one) before spending alot of money on a h/o alternator

By Anthony on February 14, 2014

99 found this helpful


High quality

these are high quality cables. True OFC copper the connectors
Are on very secure and in case you have to shortin the cables for any reason they give you ring terminals to put on after the others are cut off. You will not be disappointed with these at all. I know I'm not and I can be very picky when It comes to car audio

By T-Top on January 11, 2014

96 found this helpful


Amazing

Didn't have to do anything other than attach the wires were they needed to be. After watching youtube videos of what was required for the big 3 upgrade, I found this kit to make things easier.

By Dolo on June 9, 2014

89 found this helpful


Definitely A Must Have

I purchased this kit along with a XS Power battery. definitely the best investment I've made in a while. my car runs better with a much better throttle response. my stereo system sound so much better and so much louder, and i have no dimming lights anymore when the bass hits.

By Bo on August 24, 2015

27 found this helpful


Perfect product

The installation process was great i called and there was a 4 day delay for a call back but they were very helpful and even looked up the correct price in my area for the installation for me and sent an email after. This prodcut exceeds expectations and comes with everything you need for a big three upgrade minus a ratchet of corse. I highly reccomend it

By Isaiah on July 6, 2017 Checkmark Icon Verified purchase

12 found this helpful


Great product

The big3xs is a great kit because it comes pre-crimped with heat shrunk ends. This makes it really nice and the quality is top notch! The customer service at sonic electronix is always great. Good communication on status of parts.

By Chandler on January 30, 2017

12 found this helpful


Excellent quality

Perfect couldn't ask for a better product I recommend this to anybody if you're serious about your car stereo well worth the investment.

By Bruno on September 23, 2016 Checkmark Icon Verified purchase

12 found this helpful


Does the job

I bought this and had friend install when I upgraded sub amp to 1400rms. Not sure if I needed or not as o stall for both was done at same time. I did not want dimming or electrical issues so I took the safe route. No dimming at all on stack electrical plus this kit. The wire is thick! Like a garden hose. Quality stuff and the connections already attached made no crimping necessary.

By erik on April 28, 2016 Checkmark Icon Verified purchase

12 found this helpful


EXCELLENT KIT

EXCELLENT THIS KIT EASY TO INSTALL IN THE VEHICLE RECOMMENDED IS OF VERY GOOD QUALITY AND FLEXIBILITY

By OPEL CORSA on April 18, 2016

12 found this helpful


Great value

The big 3 upgrade kit was just what the Dr ordered

By Del on July 8, 2017 Checkmark Icon Verified purchase

11 found this helpful



ACC16 small

Blue Quick Splice Adaptor 50 Pack 16 - 14 Gauge

(4)

$6.99

List price $14.99

DEH-P3000IB small

Pioneer DEH-P3000IB

CD, MP3, WMA Receiver with Remote and iPod Direct Controls

(20)

$99.99

List price $149.99

MG1392 small

Mean Green Alternators MG1392

High Output Alternator for select 2007-2009 Ram 2500 / 1500 / 3500 and Durango

$519.99

List price $519.99

Image X11i small

Klipsch Image X11i - Black

Image Series In-Ear Headphones with Advanced Mic/Remote System, and Noise-Isolation

$149.99

List price $349.99

ZXX-2000.4 BAK42 BBIC5 small

New Hifonics Zeus ZXX-2000.4 2000 Watt RMS 4-Channel Car Audio Amplifier+Amp Kit

2000W Peak Zeus Series Class-A/B 4-Channel 2-Ohm Stable Amplifier (ZXX-20004) Package

(87)

$219.90

List price $528.98

GM1483B small

Scosche GM1483B / GM1483 Dash Kit

Install a new Single-DIN car stereo in select 1995-2023 vehicles from GMC, Chevrolet, Cadillac trucks (Black)

(119)

$6.34

List price $13.95

MBL MC CLNTCH PEN WW small

Monster Cable CleanTouch Pen (MBL MC CLNTCH PEN WW) Electronic Device Cleaner

Alcohol and Ammonia Free Antibacterial Touchscreen Cleaning Solution

$3.99

List price $24.95

HP-1-WHITE small

i.Fuzen HP-1 (Original V1 - White)

iPhone 4/4S Case with Built-in Headphone Amplifier, Splitter and Extended, Rechargeable Battery

$69.99

List price $129.99

2XL-154D small

PowerBass Xtreme 2XL-154D

15" Dual 4 ohm 2XL Series Subwoofer

$299.99

List price $479.99

Related Searches


Save up to 10 different vehicles in your garage
Vehicle
Store
Delete

2012 Subaru Forester

2016 Mazda 6

2022 Audi A4 Quattro

2023 Mazda CX-30

2003 Subaru Impreza

2006 MINI Cooper

2020 Dodge Journey

2016 Nissan Leaf

2012 Buick Regal

2011 BMW X6

Vehicle
Store
Delete

2016 Can-Am Defender DPS HD8

Add vehicle Clear all vehicles
Where to find vehicle info
Are you sure you want to clear your garage?
This action cannot be undone. Confirm
This page was not designed for products.
If you continue, you will be redirected to a category customized for your vehicle. Continue
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

Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.