Skip to content

GP Car Audio Is Your #1 Source for Sundown Audio, Deaf Bonce, XS Power & Much More!

Country/Region

United States (USD $)

Search

Product type

Search Log in Basket

Menu

SUBWOOFERS
AMPLIFIERS
MIDS AND HIGHS
SUBWOOFER ENCLOSURES
WIRE & WIRING KITS
INSTALLATION
ALTERNATORS & BATTERIES
GP's CNC SHOP
COMPETITORS CORNER
GP DAILY DEALS

Serving The Car Audio Community Since 2014

GPcarAudio.com

CALL US: 417-765-0080

Big 3 Kits

(14 products)

Sort by

Featured
Most relevant
Best selling
Alphabetically, A-Z
Alphabetically, Z-A
Price, low to high
Price, high to low
Date, old to new
Date, new to old

View as List Grid

FiltersFilter & Sort

Applied Filters

Clear all

Sort by

Featured
Most relevant
Best selling
Alphabetically, A-Z
Alphabetically, Z-A
Price, low to high
Price, high to low
Date, old to new
Date, new to old

Price

From $

-

To $

From To

Clear

Brand

GP Car Audio
TRUSPEC

Clear

GP Car Audio
1/0 AWG Big 3 Upgrade Kit GP Merica NO BS OFHC CABLE

From $94.99 USD

View details
GP Car Audio
2/0 AWG Big 3 Upgrade Kit GP Merica NO BS OFHC CABLE

$129.99 USD

View details
TRUSPEC
1/0 Tru Spec Pure Copper Big 3 Upgrade

$79.99 USD

View details
GP Car Audio
4 AWG Big 3 Upgrade Kit GP Merica NO BS OFHC CABLE

$64.99 USD

View details
GP Car Audio
Big 3 Upgrade: Trunk Starting Battery 1/0 AWG OFHC

$314.99 USD

View details
GP Car Audio
Big 3 Upgrade: Trunk Starting Battery 2/0 AWG OFHC

$399.99 USD

View details
GP Car Audio
*The Complete: 4 AWG Stage 1 Wiring Kit

$189.99 USD

View details
TRUSPEC
1/0 AWG Tru Spec OFC Pure Copper Big 3 Upgrade + Amp Kit

$199.99 USD

View details
GP Car Audio
*The Complete: 1/0 AWG Stage 1 Wiring Kit

$294.99 USD

View details
GP Car Audio
*The Complete: 2/0 AWG Stage 1 Wiring Kit

$389.99 USD

View details
GP Car Audio
*The Complete Advanced: 1/0 AWG Stage 2 Wiring Kit

$499.99 USD

View details
GP Car Audio
*The Complete Advanced: 2/0 AWG Stage 2 Wiring Kit

$565.99 USD

View details
GP Car Audio
*The Complete Elite: 1/0 AWG Stage 3 Wiring Kit

$949.99 USD

View details
GP Car Audio
*The Complete Elite: 2/0 AWG Stage 3 Wiring Kit

$1,074.99 USD

View details

Your cart

Your cart is empty

Subtotal:$0.00 USD

Loading...

JOIN OUR MAILING LIST FOR SPECIAL OFFERS!

Email

Contact Us

New Sales Inquiries/ Check On An Order
Contact Sales

Warranty/ Returns
Contact Warranty

Authorized GP Dealers/ Inquiries
Send Inquiry

Categories

Subwoofers
Amplifiers
Mids & Highs
Enclosures
Installation

Quick Links

Privacy Policy
Shipping / Returns / Warranty
Login
Search
Financing

Payment methods accepted

Country/Region

United States (USD $)

© 2026 GP Car Audio.

New Sales Inquiries

Have a question before purchasing? We're here to help.

Name

Email

Phone

How can we help?

Warranty & Returns

Need help with a product issue or return?

Name

Email

Phone

How can we help?

Authorized Dealer Inquiries

Interested in becoming a dealer? Let's talk.

Name

Email

Phone

How can we help?

I understand that a valid Business Name, TAX ID/EIN, and physical business address are required to apply.

Choose options

Item added to your cart.

View cart