See all parts that fit your 2018 300
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
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
• 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
Check out the XS Power BIG3XS Installation Procedure
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
Best selling similar products
• 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:
BIG3XS
Weight:
6.10lbs
Internal SKU:
xsp-big3xs
Internal Product ID:
74887
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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
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
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.
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.
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
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.
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.
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.
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
12 found this helpful
Great value
The big 3 upgrade kit was just what the Dr ordered
Verified purchase
11 found this helpful
1 ft. of OFC 1/0 Gauge Cobalt Blue Hyper-Flex Power / Ground Cable (Sold by the Foot)
(3)
$6.99
List price $9.95
Double DIN DVD/CD/MP3 Player with 6.5" LCD Touchscreen, Bluetooth and Aux-In
(2)
$339.99
List price $599.99
Double-DIN Digital Multimedia Receiver with Bluetooth and Built-in Alexa (Sirius XM Ready)
(1)
$159.95
List price $179.95
NVX V-Series Complete Speaker Upgrade Kit
Fits select 2009-2014 F-150 ; Includes Speakers Harness
(153)
$199.96
List price $245.96
300W RMS Monoblock ZX Series Class A/B Amplifier
(11)
$144.95
List price $229.95
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
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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.
