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2011 Mazda 3

Universal gear includes car amplifiers, subs, and other products that do not install in a specific location or require fitment to integrate with a vehicle.

Universal-Fit Audio for 2011 Mazda 3

When thinking of universal gear, we consider products like a car amp that gives more power to your speakers or subs, cell phone chargers, equalizers and sound processors, rear-seat entertainment and video monitors, as well as dash cameras.

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Sundown Audio GT-R1 (GT1R8)

100W RMS 2" 8-ohm Pro Audio Super Tweeter (S-GT1R8)

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100W RMS 2" 8-ohm Pro Audio Super Tweeter (S-GT1R8)

• Super Tweeter
• 100 watts RMS Each
• 8 ohm Impedance

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List price $47.99
-17% $39.99

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• Super Tweeter
• 100 watts RMS Each
• 8 ohm Impedance

NVX XAPK4

Full Spec 4 Gauge 100% (OFC) Oxygen Free Copper Amplifier Power Wiring Kit with Speaker Wire for Amplifiers up to 1500 Watts

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Full Spec 4 Gauge 100% (OFC) Oxygen Free Copper Amplifier Power Wiring Kit with Speaker Wire for Amplifiers up to 1500 Watts

• 4 Gauge Power Amplifier Installation Kit
• For Amplifiers Up To 1500 Watts RMS
• 100% (OFC) Oxygen Free Copper
• Tinned conductors for corrosion resistance
• Pre-terminated seamless power and ground ring terminals
• ANL/Mini-ANL Fuse Holder with 100 amp fuse
• CEA-2015 and BC5W2 Compliant

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Encore WK-2+ (WK-2-PLUS)

Vehicle Alarm/Remote Start 2-Window Roll-up/down Automation Kit

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Vehicle Alarm/Remote Start 2-Window Roll-up/down Automation Kit

• Universal Vehicle Alarm/Remote Start Power Window Automation Kit
• Automatic Roll-up/down windows from your Alarm/Remote Start controller
• Can be used for sunroof
• Compatible with All Encore Remote Start and Security Systems
• Compatible with All Encore Remote Start and Security Systems

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List price $99.99
-76% $23.99

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• Universal Vehicle Alarm/Remote Start Power Window Automation Kit
• Automatic Roll-up/down windows from your Alarm/Remote Start controller
• Can be used for sunroof
• Compatible with All Encore Remote Start and Security Systems
• Compatible with All Encore Remote Start and Security Systems

NVX XSBI500

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

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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

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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

Viper 7756V

2-Way LCD Replacement Remote Control

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2-Way LCD Replacement Remote Control

• 2-Way Replacement Remote
• 5-Button Transmitter
• 1 Mile Range
• Color: Black

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• 2-Way Replacement Remote
• 5-Button Transmitter
• 1 Mile Range
• Color: Black

Belva BLPCAM2

License Plate Mounted Waterproof Rearview Backup Camera with Built in Night Vision

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License Plate Mounted Waterproof Rearview Backup Camera with Built in Night Vision

• Universal Rear View Backup Camera
• Mounting Style: Full License Plate Frame
• Resolution: 720 x 480 
• Waterproof: Yes
• Nightvision: Infrared LED's

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-60% $39.99

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• Universal Rear View Backup Camera
• Mounting Style: Full License Plate Frame
• Resolution: 720 x 480 
• Waterproof: Yes
• Nightvision: Infrared LED's

Belva BST808

Pair of 8 Gauge Spade Terminals, #8 Opening with Nickel Plated Brass (1 Black & 1 Red)

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Pair of 8 Gauge Spade Terminals, #8 Opening with Nickel Plated Brass (1 Black & 1 Red)

• Spade Terminals • 8 Gauge
• 1 Red & 1 Black
• Nickel Plated
• Resealable Polybag

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List price $9.99
-75% $2.49

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• Spade Terminals • 8 Gauge
• 1 Red & 1 Black
• Nickel Plated
• Resealable Polybag

Belva BTK106

Six Piece Installer's Panel Removal Installation Tool Kit for Stereo, Speakers and Car Audio Installs

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Six Piece Installer's Panel Removal Installation Tool Kit for Stereo, Speakers and Car Audio Installs

• Six Piece Installer's Removal Tool Kit
• Durable Nylon Plastic

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• Six Piece Installer's Removal Tool Kit
• Durable Nylon Plastic

NVX VBTERM2

Round Push Style Outer Design Terminal Cups With Chrome-Plated Contacts

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Round Push Style Outer Design Terminal Cups With Chrome-Plated Contacts

• Universal Round Chrome-plated Terminal Cup for Speaker & Subwoofer boxes
• Chrome-plated contacts for optimal signal transfer
• Screw binding posts for a tight secure connection
• Positive (Red) and negative (Black) indicators to ensure proper wiring
• Easy to install and use

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• Universal Round Chrome-plated Terminal Cup for Speaker & Subwoofer boxes
• Chrome-plated contacts for optimal signal transfer
• Screw binding posts for a tight secure connection
• Positive (Red) and negative (Black) indicators to ensure proper wiring
• Easy to install and use

Metra MPS-RGBC-4

Water-Resistant RGB LED Controller for MPS-RGBWWS4

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Water-Resistant RGB LED Controller for MPS-RGBWWS4

• Water-resistant RGB LED Controller
• Designed in tandem with RGB MPS app
• Select from 10 speeds and 20 modes
• Sync LED to your music via Smartphone Bluetooth feature
• Compatible with MPS-RGBWWS4 (Sold separately)

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JL Audio 12W6v3-D4

600W RMS 12" W6v3 Series Dual 4-ohm Car Subwoofer

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600W RMS 12" W6v3 Series Dual 4-ohm Car Subwoofer

• RMS Power: 600 watts
• Impedance: Dual 4 ohm
• Mineral-Filled Polypropylene Cone
• Butyl Rubber Surround
• Mount depth: 7.52"
• Sensitivity: 85.4 dB

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$949.99

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JL Audio VXi-HUB

JLid-Communication and Optical Audio Network Hub for JL Audio VXi Amplifiers

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JLid-Communication and Optical Audio Network Hub for JL Audio VXi Amplifiers

• JLid-communication and optical audio network hub
• Allows connection of multiple VXi Series amplifiers
• Connects to JLid-COMM port on VXi amps via Cat5 Ethernet cables
• Provides JLid-communication and optional S/PDIF

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• JLid-communication and optical audio network hub
• Allows connection of multiple VXi Series amplifiers
• Connects to JLid-COMM port on VXi amps via Cat5 Ethernet cables
• Provides JLid-communication and optional S/PDIF

NVX SQW124

1200W Peak (600W RMS) 12" SQ-Series Dual 4-ohm Shallow-Mount Car Subwoofer

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1200W Peak (600W RMS) 12" SQ-Series Dual 4-ohm Shallow-Mount Car Subwoofer

• Peak Power: 1200 watts
• RMS Power: 600 watts
• Impedance: Dual 4 ohm
• Polypropylene Cone
• Rubber Surround
• Mount depth: 3.51"
• Sensitivity: 84 dB

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List price $359.99
-17% $299.99

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• Peak Power: 1200 watts
• RMS Power: 600 watts
• Impedance: Dual 4 ohm
• Polypropylene Cone
• Rubber Surround
• Mount depth: 3.51"
• Sensitivity: 84 dB

Stinger SPT522

Gauge Reducer, 4 Gauge Input to 8 Gauge Pin

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Gauge Reducer, 4 Gauge Input to 8 Gauge Pin

• Gauge Reducer Adapter
• 4 Gauge Input to 8 Gauge Pin
• Deep Wire Recesses
• Ultimate Power Delivery
• Corrosion Resistant Chrome Plating

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List price $19.00
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• Gauge Reducer Adapter
• 4 Gauge Input to 8 Gauge Pin
• Deep Wire Recesses
• Ultimate Power Delivery
• Corrosion Resistant Chrome Plating

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NVX XQC302 Dual USB Quick Charge 3.0 Car Charger with LED Digital Voltmeter

QC 3.0 Fast Charging 12V/24V 36W Aluminum Waterproof Socket Power Output Adapter with On/Off Switch

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QC 3.0 Fast Charging 12V/24V 36W Aluminum Waterproof Socket Power Output Adapter with On/Off Switch

• Features Qualcomm Quick Charge 3.0
• Charges two devices simultaneously at 5V (2.1A)
• Charges devices 4x faster than conventional charging
• Compatible with most 12/24V charging systems
• Can be used nearly any application (Car/Truck/SUV/ATV/UTV/RV/Motorcycle/Marine)

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• Features Qualcomm Quick Charge 3.0
• Charges two devices simultaneously at 5V (2.1A)
• Charges devices 4x faster than conventional charging
• Compatible with most 12/24V charging systems
• Can be used nearly any application (Car/Truck/SUV/ATV/UTV/RV/Motorcycle/Marine)

SPL-LAB Mini Bass Meter SE (Second Edition)

Compact Sound Pressure Meter with Voltage Measure Display

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Compact Sound Pressure Meter with Voltage Measure Display

• Compact standalone sound pressure meter
• Measures SPL, current, maximum, and minimum voltage
• Measures speaker tunes and subwoofers
• Attachable to car windshield

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• Compact standalone sound pressure meter
• Measures SPL, current, maximum, and minimum voltage
• Measures speaker tunes and subwoofers
• Attachable to car windshield

NVX VAD11005 v2 (VAD11005v2)

1100W RMS Class D V-Series Full-Range 5-Channel Car/Marine/Powersports Amplifier with Bass Remote

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1100W RMS Class D V-Series Full-Range 5-Channel Car/Marine/Powersports Amplifier with Bass Remote

• 80 watts x 4 channel + 350 watts x 1 channel @ 4 ohm
• 125 watts x 4 channel + 600 watts x 1 channel @ 2 ohm
• Bridged: 250 watts x 2 channel @ 4 ohm + 600 watts x 1 channel @ 2 ohm
• Total RMS Power: 1100 watts
• Class D 2 ohm Stable 5-Channel Amplifier

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2026-06-30 23:59:00
Save 30% off an NVX XKIT46 Amp Kit at Checkout! Add a qualifying amplifier to your cart and save 30% on the NVX XKIT46 Amp Kit! No code needed — discount applies automatically at checkout.

Stinger SS69HBG

Empty Single 6x9" Sealed Hatchback Speaker Enclosures

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Empty Single 6x9" Sealed Hatchback Speaker Enclosures

• Empty Single 6x9" Speaker Enclosures
• Medium Density Fiberboard (MDF) construction with charcoal carpet finish
• Hatchback enclosure design suitable for trucks
• Integrated terminals for easy installation and removal

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• Empty Single 6x9" Speaker Enclosures
• Medium Density Fiberboard (MDF) construction with charcoal carpet finish
• Hatchback enclosure design suitable for trucks
• Integrated terminals for easy installation and removal

Cobra PRO 2500W (CPI2500W)

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

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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

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

Metra 82-4300

1" Universal Spacer Rings for 6.5" to 6.75" Speakers

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1" Universal Spacer Rings for 6.5" to 6.75" Speakers

• Works with most 5 1/4", 6 1/2" and 6 3/4" speakers
• Gives 1 inch extra depth

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• Works with most 5 1/4", 6 1/2" and 6 3/4" speakers
• Gives 1 inch extra depth

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    FAQ for Universal-Fit Audio & Electronics in 2011 3

    Q: Can I upgrade or change the Universal-Fit Audio & Electronics in 2011 Mazda 3?

    A: Yes this page includes all the best Universal-Fit Audio & Electronics that work in your 3.

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    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.