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Home/Equipment/Wiring/XS Power/XS FLEX, 1/0 AWG, 350A Big 3 Upgrade Kit
XS Power XS FLEX 1/0 AWG 350A Big 3 Upgrade Kit - 0 AWG, 100% OFC, includes blue power wire, clear ground wire, ring terminals, and accessories - Wiring kit with durable jacket and connectors.
XS Power/Wiring

XS FLEX, 1/0 AWG, 350A Big 3 Upgrade Kit

XS FLEX, 1/0 AWG, 350A Big 3 Upgrade Kit The one-step Big 3 upgrade kit If your aftermarket audio system is putting a strain on the rest of your carfts electronics, you might want to upgrade your factory wiring. Rated to 350 amps, this Big Three electrical upgrade package will boost your electrical systemfts performance by allowing the maximum current to flow easily from your alternator, greatly improving the systemfts ground connection to your vehiclefts chassis. XS Powerfts Big3XS kit includes heavy-duty 1/0-gauge oxygen-free copper cables that replace your vehiclefts battery ground-to-chassis wire, the chassis-to-engine block wire, and the alternator charge output wire. Another bonus is that the ring terminals are already crimped to the wires, so you wonftt have to replace the stock grounds unless you want to improve them or double up. Weight Lbs. ����������������������������������������������������ilý 2.72 Length ýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýý 9 in Height ýýýýýýýýýýýýýýýýýýEX BL Cable 2qty - 4ft 0AWG XS FLEX CLR Ground Cable 8qty - XS Power Brand Heat Shrink 8qty - 0AWG Crimp Terminals 10qty - Wire Clamps 10qty - Zip Ties 10qty - Screws You can view or download the installation instructions here. 1 Year Warranty MSRP ýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýýý
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Specifications

brand
XS Power
color
blue, clear
model
XS FLEX
material
copper
gauge awg
0
amp rating
350

Choose the right gauge for your power needs

Wire Gauge Selection
Where to Buy
D
Down 4 Soundcom

Updated 3/23/2026

$124.99Buy Now
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Frequently Asked Questions

What is the XS Power XS FLEX, 1/0 AWG, 350A Big 3 Upgrade Kit?

The XS Power XS FLEX, 1/0 AWG, 350A Big 3 Upgrade Kit is a car audio wiring kit made by XS Power. View full specifications and where to buy on this page.

How much does the XS Power XS FLEX, 1/0 AWG, 350A Big 3 Upgrade Kit cost?

The XS Power XS FLEX, 1/0 AWG, 350A Big 3 Upgrade Kit typically sells for around $125 depending on the retailer and variant. Check the "Where to Buy" section for current pricing from authorized dealers.

Where can I buy the XS Power XS FLEX, 1/0 AWG, 350A Big 3 Upgrade Kit?

You can purchase the XS Power XS FLEX, 1/0 AWG, 350A Big 3 Upgrade Kit from authorized dealers listed in the "Where to Buy" section on this page. We recommend buying from authorized retailers to ensure warranty coverage and genuine products.

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