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Perform the big 3-upgrades for your vehicle with our exclusive big 3 upgrade kits and packages. Buy now for fast and free shipping!
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Big 3 Upgrade Kits

1/0 AWG Big 3 Upgrade Kit with CCA Wire for Audio Sytems up to 250 Amps

• 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
• 30% Copper CCA Wire

Add a pair of Large Gauge Cable Crimper and Save 25%

$34.99

IN STOCK

1/0 AWG Big 3 Upgrade Kit with 100% OFC Wire for Audio Sytems up to 350 Amps

• 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

Add a pair of Large Gauge Cable Crimper and Save 25%

$69.99

IN STOCK

XP FLEX 1/0 AWG Big Three Electrical System Wiring Upgrade Kit for Audio Sytems up to 250 Amps

• 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 250A or Less
• Comes With All Needed Wiring
• Ring Terminals are Pre-Connected to Power and Ground Wire

Add a pair of Large Gauge Cable Crimper and Save 25%

$49.99

IN STOCK

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

• 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

Add a pair of Large Gauge Cable Crimper and Save 25%

$92.52

IN STOCK

Only 2 Left!

Premium Zero Gauge "Big 3" Cable Upgrade Kit

• Designed for Alternators up to 250 Amps
• Ultra Flexible soft Touch Jacket for Easy Routing
• True 1/0 Gauge Diameter Cable
• Heavy duty Set-Screw Ring Terminals

$61.38

IN STOCK

XP FLEX 1/0 AWG Big Three Electrical System Wiring Upgrade Kit for Audio Sytems up to 250 Amps

• 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 250A or Less
• Comes With All Needed Wiring
• Ring Terminals are Pre-Connected to Power and Ground Wire

$49.99

IN STOCK

Sonic Exclusive Big 3 Upgrade Combo Package (1/0 AWG Hyper-flex Cable)

• Includes Kicker 1/0 Power & Ground Cable
• Kicker Battery Terminal Clamp
• Helps Eliminate Dimming Headlights
• Stops Drops in Voltage
• Improves Vehicles System Charging
• Includes Wire & Cable Cutter/Stripper

$141.83

AVAILABLE

Ships at Later Date

400A Premium Oversized-Zero Gauge "Big 3" Cable Upgrade Kit

• Designed for Alternators up to 400 Amps
• Ultra Flexible soft Touch Jacket for Easy Routing
• True 1/0 Gauge Diameter Cable
• Heavy duty Set-Screw Ring Terminals

$110.93

IN STOCK

Only 3 Left!

XS Power XP750-CK XP750 AGM Battery Power Cell w/ Installation Kit + Stinger SPC505 5 Farad Pro Digital Hybrid Capacitor + NVX XBG3PK Big 3 Kit

• XP750 AGM Battery Power Cell
• Installation Kit for 1000-1500 Watt Audio Systems
• All-in One Battery plus Battery Wiring Kit
• Digital 5 Farad Hybrid Capacitor
• 5 farad capacitor for systems up to 3500 watts
• 100% OFC (Oxygen Free Copper) 1/0 Gauge Big 3 Upgrade Kit

$327.88

IN STOCK

Big 3 Upgrade Combo Package 1/0 AWG EnvyFlex Cable, Wire Cutters, 2 Battery and 4 Ring Terminals

• Includes NVX 1/0 Power & Ground Cable
• Battery Terminal Clamps
• Helps Eliminate Dimming Headlights
• Stops Drops in Voltage
• Improves Vehicles System Charging
• Includes Wire & Cable Cutter/Stripper

$138.98

OUT OF STOCK