Garage
Shop

Performance Parts & Accessories

Top sellers

Loading...
filter-icon Filters & Sort

XS Power 580

Pair of 12 Volt Short Brass Battery Terminal Post Adapters M6

580 big
Go to item page Right Arrow Icon of Right Arrow

Pair of 12 Volt Short Brass Battery Terminal Post Adapters M6

• Pair of 12-Volt Short Brass Terminal Post Adapters
• For Vehicles that Use "Short Style" Battery Posts
• High Quality M6 Threading
• Stainless Steel Hex-Head Bolts Included
• Compatible with All i-BAR Rails

shipping truck icon Free shipping in USA. Provide zip for delivery date.
28
List price $19.99
-25% $14.99

In stock

• Pair of 12-Volt Short Brass Terminal Post Adapters
• For Vehicles that Use "Short Style" Battery Posts
• High Quality M6 Threading
• Stainless Steel Hex-Head Bolts Included
• Compatible with All i-BAR Rails

XS Power D3400

2500W 80Ah Absorbent Glass Mat (AGM) Car Battery

D3400 big
Go to item page Right Arrow Icon of Right Arrow

2500W 80Ah Absorbent Glass Mat (AGM) Car Battery

• 12-Volt AGM Car Battery
• Sealed Absorbent Glass Mat (AGM) design
• Perfect for 2500W car audio stereo systems
• Compatible with many domestic, Japanese and European car models
• Also works as a secondary battery with a 4000-watt capacity

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $42.00 in rewards to spend later

87
List price $429.99
$419.99

In stock

NVX BIR500

500-Amp High Current Dual Battery Isolator and Relay for Car Audio Systems (Handles up to 700-Amp Surge)

BIR500 big
Go to item page Right Arrow Icon of Right Arrow

500-Amp High Current Dual Battery Isolator and Relay for Car Audio Systems (Handles up to 700-Amp Surge)

• 500-Amp continuous / 700-Amp surge
• Ideal for car stereo systems and mobile electronics
• Prevents the main starter battery from draining
• 10V to 16V DC operating range

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $8.00 in rewards to spend later

36
List price $95.99
-17% $79.99

In stock

Used from: $85.99

• 500-Amp continuous / 700-Amp surge
• Ideal for car stereo systems and mobile electronics
• Prevents the main starter battery from draining
• 10V to 16V DC operating range

Stinger SPI300

600W Peak (300W RMS) Dual Outlet Portable Power Inverter

SPI300 big
Go to item page Right Arrow Icon of Right Arrow

600W Peak (300W RMS) Dual Outlet Portable Power Inverter

• Dual Outlet Portable Power Inverter
• Surge Power Output: 600 watts
• Continuous Power Output: 300 watts
• USB port included for charging compatible devices
• Internal cooling fan keeps the inverter from overheating

shipping truck icon Free shipping in USA. Provide zip for delivery date.
1
List price $169.00
-74% $43.99

In stock

• Dual Outlet Portable Power Inverter
• Surge Power Output: 600 watts
• Continuous Power Output: 300 watts
• USB port included for charging compatible devices
• Internal cooling fan keeps the inverter from overheating

Limitless Lithium LL3.5A-MTN-HV

3.5A 15V Portable Automatic Smart Lithium High Voltage Maintainer

LL3.5A-MTN-HV big
Go to item page Right Arrow Icon of Right Arrow

3.5A 15V Portable Automatic Smart Lithium High Voltage Maintainer

• Portable Automatic Smart Lithium High Voltage Maintainer
• Lithium LTO Battery Maintainer 3.5 Amp
• Designed for charging 15 volts batteries
• Shuts off when the battery is charged
• Can be used as a "Maintainer" for all LTO and high voltage lithium batteries

shipping truck icon Free shipping in USA. Provide zip for delivery date.
$89.00

In stock

Only 1 Left!

• Portable Automatic Smart Lithium High Voltage Maintainer
• Lithium LTO Battery Maintainer 3.5 Amp
• Designed for charging 15 volts batteries
• Shuts off when the battery is charged
• Can be used as a "Maintainer" for all LTO and high voltage lithium batteries

NVX XSBI500

500-Amp Microprocessor-Controlled Dual Sensing Smart Battery Isolator and Relay (Handles up to 700-Amp Surge)

XSBI500 big
Go to item page Right Arrow Icon of Right Arrow

500-Amp Microprocessor-Controlled Dual Sensing Smart Battery Isolator and Relay (Handles up to 700-Amp Surge)

• 500-Amp continuous / 700-Amp surge
• Ideal for car stereo systems and mobile electronics
• Prevents the main starter battery from draining
• 10V to 16.5V DC operating range

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $9.00 in rewards to spend later

8
List price $109.99
-18% $89.99

In stock

Used from: $76.88

• 500-Amp continuous / 700-Amp surge
• Ideal for car stereo systems and mobile electronics
• Prevents the main starter battery from draining
• 10V to 16.5V DC operating range

Stinger SGP35

500 Amp Relay and Isolator

SGP35 big
Go to item page Right Arrow Icon of Right Arrow

500 Amp Relay and Isolator

• Prevents Primary Battery Discharge
• Maximum Current Transfer
• Ideal for 2nd Audio Battery Isolation from Vehicle Systems
• 500A Constant/ 900A Peak

shipping truck icon Free shipping in USA. Provide zip for delivery date.
1
List price $379.00
-69% $117.99

In stock

• Prevents Primary Battery Discharge
• Maximum Current Transfer
• Ideal for 2nd Audio Battery Isolation from Vehicle Systems
• 500A Constant/ 900A Peak

Cobra CPIALCDG1

Remote Controller with Fast Charge USB and LCD Display for Select Cobra Inverters

CPIALCDG1 big
Go to item page Right Arrow Icon of Right Arrow

Remote Controller with Fast Charge USB and LCD Display for Select Cobra Inverters

• Remote Controller with Fast Charge USB for inverters
• Built-in bright blue backlit LCD text display
• Compatible with select Cobra inverters
• Features 4 mounting options
• Mounting hardware included

shipping truck icon Free shipping in USA. Provide zip for delivery date.
$69.95

Available

Ships in 10-14 days

• Remote Controller with Fast Charge USB for inverters
• Built-in bright blue backlit LCD text display
• Compatible with select Cobra inverters
• Features 4 mounting options
• Mounting hardware included

Mean Green Alternators MG1388

High Output Alternator for select 2007-2011 Wrangler Unlimited and Wrangler

MG1388 big
Go to item page Right Arrow Icon of Right Arrow

High Output Alternator for select 2007-2011 Wrangler Unlimited and Wrangler

• High output alternator
• Compatible with select 2007-2011 Wrangler Unlimited and Wrangler
• Easy 5-minute installation
• Up to 300% more charging power
• Precision balanced for smooth operation

shipping truck icon Free shipping in USA. Provide zip for delivery date.
$579.99

In stock.

• High output alternator
• Compatible with select 2007-2011 Wrangler Unlimited and Wrangler
• Easy 5-minute installation
• Up to 300% more charging power
• Precision balanced for smooth operation

XS Power D3100

3000W 872 Ah Absorbent Glass Mat (AGM) Car Battery

D3100 big
Go to item page Right Arrow Icon of Right Arrow

3000W 872 Ah Absorbent Glass Mat (AGM) Car Battery

• 12-volt Absorbent Glass Mat (AGM) Car Battery
• Sealed Absorbent Glass Mat (AGM) design
• Perfect for 4000W audio stereo systems
• Compatible with many Domestic and Japanese vehicles

shipping truck icon Free shipping in USA. Provide zip for delivery date.
28
List price $549.99
-9% $499.99

In stock

XS Power XP950

950W 35 Ah Absorbent Glass Mat (AGM) Secondary Battery

XP950 big
Go to item page Right Arrow Icon of Right Arrow

950W 35 Ah Absorbent Glass Mat (AGM) Secondary Battery

• 12-volt Absorbent Glass Mat (AGM) Secondary Battery
• Sealed Absorbent Glass Mat (AGM) design
• Perfect for 950W car audio stereo systems
• Compatible with most vehicle applications

shipping truck icon Free shipping in USA. Provide zip for delivery date.
14
List price $209.99
-17% $174.99

In stock

NVX XSBI200

200-Amp Microprocessor-Controlled Dual Sensing Smart Battery Isolator and Relay (Handles up to 300-Amp Surge)

XSBI200 big
Go to item page Right Arrow Icon of Right Arrow

200-Amp Microprocessor-Controlled Dual Sensing Smart Battery Isolator and Relay (Handles up to 300-Amp Surge)

• 200-Amp continuous / 300-Amp surge
• Ideal for car stereo systems and mobile electronics
• Prevents the main starter battery from draining
• 10V to 16.5V DC operating range

shipping truck icon Free shipping in USA. Provide zip for delivery date.
6
List price $79.99
-38% $49.99

In stock

Used from: $45.99

• 200-Amp continuous / 300-Amp surge
• Ideal for car stereo systems and mobile electronics
• Prevents the main starter battery from draining
• 10V to 16.5V DC operating range

Mean Green Alternators MG11517

High Output Alternator for select 2010-2025 vehicles from Toyota

MG11517 big
Go to item page Right Arrow Icon of Right Arrow

High Output Alternator for select 2010-2025 vehicles from Toyota

• High output alternator
• Compatible with select 2010-2025 vehicles from Toyota
• Easy 5-minute installation
• Up to 300% more charging power
• Precision balanced for smooth operation

shipping truck icon Free shipping in USA. Provide zip for delivery date.
$579.99

In stock.

• High output alternator
• Compatible with select 2010-2025 vehicles from Toyota
• Easy 5-minute installation
• Up to 300% more charging power
• Precision balanced for smooth operation

Lowest price in 30 days

Energie PR4800

12V 110Ah Absorbent Glass Mat (AGM) Car Battery

PR4800 big
Go to item page Right Arrow Icon of Right Arrow

12V 110Ah Absorbent Glass Mat (AGM) Car Battery

• 12-volt Absorbent Glass Mat Car Audio Battery
• Sealed Absorbent Glass Mat (AGM) design
• Perfect for 4800W car audio stereo systems
• Left positive terminal

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $30.00 in rewards to spend later

6
List price $514.77
-42% $299.99

In stock

• 12-volt Absorbent Glass Mat Car Audio Battery
• Sealed Absorbent Glass Mat (AGM) design
• Perfect for 4800W car audio stereo systems
• Left positive terminal

Cobra PRO 2500W (CPI2500W)

5000W Peak (2500W RMS) DC to AC Professional Grade Power Inverter with USB Fast Charging

CPI2500W big
Go to item page Right Arrow Icon of Right Arrow

5000W Peak (2500W RMS) DC to AC Professional Grade Power Inverter with USB Fast Charging

• Modified Sine Professional Grade Power Inverter
• 2500 watts RMS, 5000 watts Peak
• Includes direct to battery cables
• LED digital display indicator
• Rugged industrial design

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $33.00 in rewards to spend later

$329.95

In stock

Only 2 Left!

• Modified Sine Professional Grade Power Inverter
• 2500 watts RMS, 5000 watts Peak
• Includes direct to battery cables
• LED digital display indicator
• Rugged industrial design

Mean Green Alternators MG1584HD

300 Amp High Output Alternator for select 2012-2026 vehicles from Jeep

MG1584HD big
Go to item page Right Arrow Icon of Right Arrow

300 Amp High Output Alternator for select 2012-2026 vehicles from Jeep

• Easy 5-minute installation
• Compatible with select 2012-2026 vehicles from Jeep Vehicles
• Up to 300% more charging power
• Precision balanced for smooth operation
• Steel rotor shaft
• Heavy duty solid copper starter windings
• Multi-function integrated regulator
• High output alternator

shipping truck icon Free shipping in USA. Provide zip for delivery date.
$579.99

In stock.

• Easy 5-minute installation
• Compatible with select 2012-2026 vehicles from Jeep Vehicles
• Up to 300% more charging power
• Precision balanced for smooth operation
• Steel rotor shaft
• Heavy duty solid copper starter windings
• Multi-function integrated regulator
• High output alternator

Mean Green Alternators MG13490

High Output Alternator for select 2004-2008 Land Cruiser

MG13490 big
Go to item page Right Arrow Icon of Right Arrow

High Output Alternator for select 2004-2008 Land Cruiser

• High output alternator
• Compatible with select 2004-2008 Land Cruiser
• Easy 5-minute installation
• Up to 300% more charging power
• Precision balanced for smooth operation

shipping truck icon Free shipping in USA. Provide zip for delivery date.
$519.99

In stock.

• High output alternator
• Compatible with select 2004-2008 Land Cruiser
• Easy 5-minute installation
• Up to 300% more charging power
• Precision balanced for smooth operation

Limitless Lithium LL-IR500A

500A Battery Isolator and Relay

LL-IR500A big
Go to item page Right Arrow Icon of Right Arrow

500A Battery Isolator and Relay

• 500-amp Relay and Battery Isolator
• High current isolation relay designed for adding a secondary battery
• Prevents primary battery discharge when the vehicle engine is off
• Maximum Contact Rating: 500 amps
• Mechanical Life Cycle: 100000

shipping truck icon Free shipping in USA. Provide zip for delivery date.
$79.00

In stock

Only 1 Left!

• 500-amp Relay and Battery Isolator
• High current isolation relay designed for adding a secondary battery
• Prevents primary battery discharge when the vehicle engine is off
• Maximum Contact Rating: 500 amps
• Mechanical Life Cycle: 100000

Limitless Lithium LL3.5A-MTN-SV

3.5A 12V Portable Automatic Smart Lithium Battery Maintainer

LL3.5A-MTN-SV big
Go to item page Right Arrow Icon of Right Arrow

3.5A 12V Portable Automatic Smart Lithium Battery Maintainer

• Portable Automatic Smart Lithium Standard Voltage Maintainer
• Lithium Lifepo4 Battery Maintainer 3.5 Amp
• Designed for charging 12 volts batteries
• Shuts off when the battery is charged
• Can be used as a "Maintainer" for all lifepo4 batteries

shipping truck icon Free shipping in USA. Provide zip for delivery date.
$89.00

Available

Ships in 10-14 days

• Portable Automatic Smart Lithium Standard Voltage Maintainer
• Lithium Lifepo4 Battery Maintainer 3.5 Amp
• Designed for charging 12 volts batteries
• Shuts off when the battery is charged
• Can be used as a "Maintainer" for all lifepo4 batteries

XS Power Titan8 (PWR-S6-3400)

6000W 10Ah Lithium Titanate Oxide (LTO) Battery

PWR-S6-3400 big
Go to item page Right Arrow Icon of Right Arrow

6000W 10Ah Lithium Titanate Oxide (LTO) Battery

• 14-volt Lithium Battery
• Sealed Lithium Titanate Oxide (LTO) design
• Perfect for up to 6000-watt audio systems

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $70.00 in rewards to spend later

1
$699.99

In stock

Only 2 Left!

Used from: $489.99

• 14-volt Lithium Battery
• Sealed Lithium Titanate Oxide (LTO) design
• Perfect for up to 6000-watt audio systems

Items per page: 20

    Clear all

    All About

    Performance Parts & Accessories
    Cold air intake systems, exhaust systems, mufflers, and other parts to push your ride to a new level.
    why-shoping-with-sonic

    We love people and we're ready to help you! See what separates us from our competition.

    Take advantage of our VIP rewards like 10% back on your purchases, free 2-day shipping, extended warranties, and free returns! Gain access to all of these rewards without any membership fees.
    Get great discounted (and possibly FREE) installation accessories with most car stereo purchases. This includes dash kits, wiring harnesses and antenna adapters that you will need to properly install your new car stereo.
    We are an Authorized Dealer for all the brands we sell, including the most premium brands in car and marine audio such as Hertz, JL Audio, NVX, Rockford Fosgate, Kicker, Alpine, Kenwood and many more.
    Shop Deals and get up to 30% off premium brands! Shop Now! We are always looking out for the best products and deals to offer our customers. Don’t pay too much by shopping elsewhere!
    We have information on brands, gear, and more for you to explore! Check out our YouTube Channel for helpful how-to videos, product reviews, and Q&As. For a more detailed look, also visit our Learning Center!
    Our trained experts are here to assist you! They are just a phone call or click away to help you get the right gear for you and your vehicle!
    Why Shop With Us?
    Save up to 10 different vehicles in your garage
    Vehicle
    Store
    Delete

    2015 MINI Cooper

    2010 Honda Pilot

    2017 Chevrolet Impala

    2008 Mazda 5

    1987 Chrysler Conquest

    2005 GMC Envoy

    2017 Ford Flex

    2003 Buick Rendezvous

    2010 Dodge Nitro

    2019 Jaguar F-Pace

    Vehicle
    Store
    Delete

    2000 Harley Davidson FLTR/I Road Glide

    2000 Harley Davidson FXST Softail Standard

    Add vehicle Clear all vehicles
    Where to find vehicle info
    Are you sure you want to clear your garage?
    This action cannot be undone. Confirm
    This category was not designed for products.
    If you continue, you will be redirected to a category customized for your vehicle. Continue
    Loading...
    Identify your vehicle and submodel details
    • Owner's manual
    • Vehicle's insurance card
    • Vehicle registration
    • Vehicle produced after 2005: Inside driver's side door
    • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
    Car Info Side Door Icon
    Vehicle Registration Icon
    Vehicle Insurance Icon

    Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

    • You see only parts engineered for your exact vehicle
    • You avoid incompatible radios, speakers, or wiring
    • Installation is smoother, faster, and frustration-free
    • You get the correct accessories the first time

    Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.