See all parts that fit your 2018 300
Sonic Exclusive Big 3 Upgrade Combo Package (1/0 AWG Hyper-flex Cable)
Big 3 Upgrade Combo Kit • 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
Learn more about the kickerbig3kit
Install New Speakers in select 1999-2026 vehicles from Dodge, Ram, Jeep
$9.99
List price $15.99
Install New Speakers in select 1999-2026 vehicles from Dodge, Ram, Jeep
$11.99
List price $13.99
Install a New Tweeter in select 2005-2024 vehicles from Dodge, Chrysler, Jeep
$12.99
List price $14.99
Double DIN Stereo Dash Kit and Harness for select 2015-2023 300
$529.99
List price $787.99
900W Peak (300W RMS) 6x9” CS Series 3 Way Coaxial 4-ohm Speakers with Integrated Midrange Speakers
$111.96
List price $159.99
7" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay and Android Auto (SiriusXM Ready)
$329.95
List price $349.95
Rockford Fosgate Punch P1 P1694
300W Peak (150W RMS) 6x9" Punch Series 4 Way Coaxial 4-ohm Speakers
$119.99
Rockford Fosgate Punch P1 P132
80W Peak (40W RMS) 3.5” Punch Series 2 Way Coaxial 4-ohm Speakers
$89.99
6.2" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth and Built-in Alexa
$194.99
List price $300.00
Big 3 Upgrade Combo Kit • 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
The Big 3 Upgrade should be the first step you take when adding a aftermarket sound system to your vehicle. The Big 3 consist of upgrading the alternator wire to the battery, the negative battery cable to vehicle ground, and engine ground to chassis. This process is sure to help eliminate dimming headlights and voltage drops by providing you with enough juice to power everything in your vehicle without additional resistance. 1/0 Gauge power & ground wire should be used when executing the upgrade, the thicker wire ensures the best possible current transfer and can re-energize your vehicles electrical system.
Available only at Sonic Electronix is the Ultimate Big 3 Upgrade Kit. This exclusive Big 3 combo package comes with two 5 ft. pieces of 1/0 AWG Gunmetal Gray Power/Ground Cable, 5 ft. piece of 1/0 AWG Blue Power/Ground Cable, one Positive/Negative Battery Terminal Clamp, one Positive Competition Battery Terminal, 0/2 Gauge Ring Terminals, and a pair of Wire & Cable Cutters to add some convenience to this upgrade.
Kenwood eXcelon KFC-XP6903C with Installation Accessories
200W RMS 6"x9" 3-way Component Speakers with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit
$255.08
List price $412.71
Polk Audio DB6502 DB+ 6.5" 600 Watt Car Speakers with Free 6" x 9" Adapters
600W Peak (200W RMS) 6.5" DB+ Series 2-way Component Speakers with 6" x 9" Speaker Adapters
$211.34
List price $232.98
6.75" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto with Backup Camera
$329.99
600W Peak (200W RMS) 6.5” CS Series 2 Way Coaxial 4-ohm Speakers
$79.96
List price $119.99
900W Peak (300W RMS) 6x9” CS Series 3 Way Coaxial 4-ohm Speakers with Integrated Midrange Speakers
$111.96
List price $159.99
6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto, and SiriusXM Ready
$349.99
List price $420.00
7" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay and Android Auto (SiriusXM Ready)
$329.95
List price $349.95
150W Peak (50W RMS) 3.5" Club Series 2 Way Coaxial 3-ohm Speakers
$79.95
List price $109.95
6.8" Double DIN Digital Multimedia Receiver with Bluetooth, Wireless Apple CarPlay, and Android Auto (SiriusXM Ready)
$599.99
List price $750.00
480W Peak (120W RMS) 6.5” DS Series 2-way 4-ohm Coaxial Car Speakers (DSC6504)
$84.99
List price $94.99
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• 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
• 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
Manufacturer:
Model Number:
KICKER BIG 3 KIT
Weight:
8.22lbs
Internal SKU:
kickerbig3kit
Internal Product ID:
39326
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awesome!
Exactly what i was looking for and was kind of easy to install! The reason why it wasnt easy was because one of the bolts for the terminal snapped! It was because the posts on my battery had been ground down so they were too skinny. Other than that perfect!!
10 found this helpful
EVERYTHING EXCEPT....
A fuse between the alternator + and battery + is a necessity. I would add one though.
7 found this helpful
Install a new Double-DIN car stereo in select 2005-2006 Spectra5 and Spectra (Black)
(2)
$11.99
List price $24.99
Wireless Car Digital FM Transmitter with 3.5mm Stereo Plug for Portable Devices
(7)
$17.99
List price $44.99
600W 4-Channel X-Line Series Class SQ A/B Amplifier
(2)
$99.99
List price $259.99
Pioneer DMH-WC6600NEX with Backup Camera
9" HD Touchscreen Digital Multimedia Receiver with Bluetooth, Wireless Apple CarPlay, Android Auto and Amazon Alexa (Modular design for custom installs)
(39)
$1139.98
List price $1299.99
Infinity PERFECT 300M (Open Box, Complete)
300W Peak (150W RMS) 3.5" Kappa Perfect Series Midrange Car Speakers
$139.95
List price $199.95
NVX Single 8" Complete Bass System w/ Ported Box, Amp, and Wiring Kit
Single 8" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure w/ N-Series v3 8" Dual Car Subwoofer, Monoblock Car Amplifier and 8 Gauge Amplifier Wiring Kit
(81)
$334.95
List price $533.96
100 Pack of 22/18 Gauge Pro Nylon Red Butt Connectors
(3)
$4.99
List price $11.99
Hifonics AS12 ( AS12R 12" Round Atlas )
12" High Performance Subwoofer
(1)
$89.99
List price $349.99
5 ft 4-Gauge EnvyFlex True Spec Oxygen-Free Copper Power and Ground Wire (White)
(6)
$19.99
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Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:
Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.
