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2013 Audi A4

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 2013 Audi A4

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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Tru Spec 4x6.5SUPB (1553KMB)

Empty Quad 6.5" Vented Prefabricated Enclosure

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Empty Quad 6.5" Vented Prefabricated Enclosure

• 6.5" Quad Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 2.50 cubic feet
• High-output XXL enclosure with double flush baffle

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List price $399.99
-41% $234.99

In stock.

DS18 PRO-TWN6.4 (Sold Individually)

300W Peak (75W RMS) 4" PRO-TWN Series 4-ohm Aluminum Super Bullet Tweeter

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300W Peak (75W RMS) 4" PRO-TWN Series 4-ohm Aluminum Super Bullet Tweeter

• 4" PRO-TWN Series 4-ohm Aluminum Super Bullet Tweeter
• 300 watts Peak Each
• 150 watts Program Power each
• 75 watts RMS Each
• 4 ohm Impedance

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$71.95

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• 4" PRO-TWN Series 4-ohm Aluminum Super Bullet Tweeter
• 300 watts Peak Each
• 150 watts Program Power each
• 75 watts RMS Each
• 4 ohm Impedance

NVX VCW10GR

Mesh Grille for NVX 10" VC-Series V1 and V2 Subwoofers

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Mesh Grille for NVX 10" VC-Series V1 and V2 Subwoofers

• Mesh grille for select NVX 10" subwoofers
Does not work with NVX VC-series V3 subs
• Designed to fit NVX VC-series V1 and V2 subwoofers
• Pre-drilled bolt pattern

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List price $17.99
-28% $12.99

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• Mesh grille for select NVX 10" subwoofers
Does not work with NVX VC-series V3 subs
• Designed to fit NVX VC-series V1 and V2 subwoofers
• Pre-drilled bolt pattern

NVX NE102S

Dual 10" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.2 Cu. Ft. with Polyfil and NVX Logo

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Dual 10" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.2 Cu. Ft. with Polyfil and NVX Logo

• 10" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 1.20 cubic feet
• Premium Black Carpet with Black NVX Logo

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List price $143.99
-17% $119.99

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• 10" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 1.20 cubic feet
• Premium Black Carpet with Black NVX Logo

Kicker KISLOC2 (46KISLOC2)

K Series 2-Channel Line Output Converter With 12-Volt Turn-on

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K Series 2-Channel Line Output Converter With 12-Volt Turn-on

• 2-ch speaker-to-RCA converter, LOC
• Compatible with OEM radios that have short circuit protection
• Take as much as 55 watts of input and deliver up to 8 volts of output

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• 2-ch speaker-to-RCA converter, LOC
• Compatible with OEM radios that have short circuit protection
• Take as much as 55 watts of input and deliver up to 8 volts of output

Alpine KTX-LK8

Front and Rear Linking Bracket for 8" Alpine PrismaLink Subwoofer Enclosures

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Front and Rear Linking Bracket for 8" Alpine PrismaLink Subwoofer Enclosures

• Linking bracket for two or more 8" Alpine PrismaLink subwoofer enclosures
• Fits the S2-SB8 subwoofer enclosure
• Heavy-duty steel front link bracket and rear link bracing
• RGB wiring harness for lighting bars
• All hardware included

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List price $70.00
-14% $59.95

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• Linking bracket for two or more 8" Alpine PrismaLink subwoofer enclosures
• Fits the S2-SB8 subwoofer enclosure
• Heavy-duty steel front link bracket and rear link bracing
• RGB wiring harness for lighting bars
• All hardware included

JL Audio PS-SWMCP-B-2.750

VeX Enclosed Speaker System Swivel Mount, 2.750"

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VeX Enclosed Speaker System Swivel Mount, 2.750"

• Low-Profile Machined Fixtures
• Mounts VeX Pods to Roll Cage
• Pipe diameter fitment: 2.750"
• Color: Black

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$179.99

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• Low-Profile Machined Fixtures
• Mounts VeX Pods to Roll Cage
• Pipe diameter fitment: 2.750"
• Color: Black

Stinger SPT5211

Pro Classic 4 GA Input Output Shoc-Krome Power Wire Coupler

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Pro Classic 4 GA Input Output Shoc-Krome Power Wire Coupler

• Power Wire Coupler
• Ultimate Power Delivery
• Corrosion Resistant Shoc-Krome Plating

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List price $19.00
-47% $9.99

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• Power Wire Coupler
• Ultimate Power Delivery
• Corrosion Resistant Shoc-Krome Plating

Kicker DB4 (46DB4)

Distribution Block with Two 1/0-8 Gauge Inputs and Four 4-8 Gauge Outputs

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Distribution Block with Two 1/0-8 Gauge Inputs and Four 4-8 Gauge Outputs

• Brass Construction
• (2) 1/0-8 Gauge In
• (4) 4-8 Gauge Out
• Uses Strong 5mm Screws

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$39.99

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• Brass Construction
• (2) 1/0-8 Gauge In
• (4) 4-8 Gauge Out
• Uses Strong 5mm Screws

Stinger SSPW18RD

500 ft. 18 Gauge Primary Wire (Red)

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500 ft. 18 Gauge Primary Wire (Red)

• 500 feet 18 Gauge Primary Wire
• Made from copper material
• Fine multi-strand copper conductors
• Color: Red

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List price $129.00
-64% $47.00

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• 500 feet 18 Gauge Primary Wire
• Made from copper material
• Fine multi-strand copper conductors
• Color: Red

Metra 44-US07R Antenna

Side/Top Mount Replacement Antenna for AM/FM Bands

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Side/Top Mount Replacement Antenna for AM/FM Bands

• Side/Top Mount Replacement Antenna for 1" Hole Split Ball Applications
• 14" Removable Conductive Rubber Mast
• Mast Color: Black

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List price $38.99
-36% $24.99

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• Side/Top Mount Replacement Antenna for 1" Hole Split Ball Applications
• 14" Removable Conductive Rubber Mast
• Mast Color: Black

Kicker GR100

Grille for Select Kicker 10" Subwoofers

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Grille for Select Kicker 10" Subwoofers

• Subwoofer Grille for Kicker Comp and Solo Classic Series
• Protects Exposed Subwoofer
• Easy Installation
• Black Metallic Finish

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$19.99

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• Subwoofer Grille for Kicker Comp and Solo Classic Series
• Protects Exposed Subwoofer
• Easy Installation
• Black Metallic Finish

SPL-LAB USB RTA Meter Pro Edition (USB RTA Pro)

USB RTA Microphone for Indoor and Outdoor Audio Systems

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USB RTA Microphone for Indoor and Outdoor Audio Systems

• USB RTA Microphone for measuring AFC
• Highly sensitive measuring microphone for home theater, car audio and acoustic systems
• Measures the frequency response, phase response and delays
• Designed for use with SPL-Lab Measuring Center software for Windows and Android

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$339.00

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• USB RTA Microphone for measuring AFC
• Highly sensitive measuring microphone for home theater, car audio and acoustic systems
• Measures the frequency response, phase response and delays
• Designed for use with SPL-Lab Measuring Center software for Windows and Android

NVX XIX2025

0.82 ft (0.25 meter) 2-Channel X-Series RCA Audio Interconnect Cable

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0.82 ft (0.25 meter) 2-Channel X-Series RCA Audio Interconnect Cable

• Shielded noise-rejecting double Twisted-pair construction
• Heavy gauge OFC conductors ensure superior sound quality
• Split-tip Silver-Plated ends offer best in class signal transfer
• Precision Machined “Locking” ends with colored channel identifiers
• Black nylon protective jacket minimizes friction and electromagnetic interference

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-25% $14.99

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• Shielded noise-rejecting double Twisted-pair construction
• Heavy gauge OFC conductors ensure superior sound quality
• Split-tip Silver-Plated ends offer best in class signal transfer
• Precision Machined “Locking” ends with colored channel identifiers
• Black nylon protective jacket minimizes friction and electromagnetic interference

NVX XCW152RC

Recone Kit for XCW152 Subwoofers

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Recone Kit for XCW152 Subwoofers

• Kits are assembled to ensure perfect fitment and alignment
• Each kit includes all new soft moving parts
• Impedance: Dual 2-ohm
• CA glue adhesive is NOT included

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List price $191.99
-17% $159.99

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• Kits are assembled to ensure perfect fitment and alignment
• Each kit includes all new soft moving parts
• Impedance: Dual 2-ohm
• CA glue adhesive is NOT included

NVX BIR200 (Open Box, Good)

200 Amp Relay Isolator (BIR200)

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200 Amp Relay Isolator (BIR200)

• 200 Amp Battery Isolator
• 200 Amps at 12V Continuous
• 300 Amps Surge
• Switching Power: 10 - 16 VDC

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List price $59.99
-50% $29.99

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• 200 Amp Battery Isolator
• 200 Amps at 12V Continuous
• 300 Amps Surge
• Switching Power: 10 - 16 VDC

Limited time!

NVX MVPA4 with Amplifier Wiring Kit

600W RMS Marine-V Series 4-Channel Class D Compact Marine/Powersports/Motorcycle Amplifier

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600W RMS Marine-V Series 4-Channel Class D Compact Marine/Powersports/Motorcycle Amplifier

• The size of a postcard with 400 Watts True RMS Output!
• MVP Series 4-Channel Micro Class D Amplifier
• 50W x 4-Chan. @ 4 ohm
• 100W x 4-Chan. @ 2 ohm
• 3-Way System Protection
• 4/3/2/1 Channel Operation
• Includes Amplifier Wiring Kit

Dads & Grads Sale! Save 15% at Checkout!
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-32% $335.98

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• The size of a postcard with 400 Watts True RMS Output!
• MVP Series 4-Channel Micro Class D Amplifier
• 50W x 4-Chan. @ 4 ohm
• 100W x 4-Chan. @ 2 ohm
• 3-Way System Protection
• 4/3/2/1 Channel Operation
• Includes Amplifier Wiring Kit

Install Bay Ford Interior Trim Retainer Clips (2048PK)

Ford Interior Trim Retainer Clips 9/32" - 25 pack

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Ford Interior Trim Retainer Clips 9/32" - 25 pack

• Interior Trim Retainer Clips
• Size: 9/32"
• For Ford Vehicles
• Pack of 25

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-11% $16.99

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• Interior Trim Retainer Clips
• Size: 9/32"
• For Ford Vehicles
• Pack of 25

Kicker CK4 (46CK4)

Complete 4 Gauge OFC CK-Series 2-Channel Amplifier Installation Kit

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Complete 4 Gauge OFC CK-Series 2-Channel Amplifier Installation Kit

• self tapping bolt and washer
• FHS fuse holder
• gauge remote wire
• AWG butt connecter

2+ offers available
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-45% $109.99

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Available Offers (2) for Kicker CK4 (46CK4)
15% off an NVX XCAP10H w/ Select Amp Kits Add a qualifying amplifier to your cart and save 15% on the NVX XCAP10H Capacitor! No code needed — discount applies automatically at checkout.
15% off an NVX XCAP1F w/ Select Amp Kits Add a qualifying amplifier to your cart and save 15% on the NVX XCAP1F Capacitor! No code needed — discount applies automatically at checkout.
Used from: $139.99
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NVX QB10SPA

1200W Peak (350W RMS) Single 10" Amplified Ported Loaded Subwoofer Enclosure with Remote Bass Knob

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1200W Peak (350W RMS) Single 10" Amplified Ported Loaded Subwoofer Enclosure with Remote Bass Knob

• 10" Amplified Loaded Subwoofer System
• 350 watts RMS
• Built-In Class D Amplifier
• Variable Bass Boost
• Speaker-Level Inputs
• Wired Remote Bass Level Control

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List price $275.98
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• 10" Amplified Loaded Subwoofer System
• 350 watts RMS
• Built-In Class D Amplifier
• Variable Bass Boost
• Speaker-Level Inputs
• Wired Remote Bass Level Control

AmmoTenna ARMMO20

20" Universal Arrow-Style Replica Antenna Mast with Adaptors (Mossy Oak)

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20" Universal Arrow-Style Replica Antenna Mast with Adaptors (Mossy Oak)

• 20" Universal arrow-style replica antenna mast
• Made with durable fiberglass construction
• Includes 9 adapters and 2 rubber washers
• Simple screw-on installation, requires no vehicle modification
• Antenna mast color/design: Mossy Oak

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• 20" Universal arrow-style replica antenna mast
• Made with durable fiberglass construction
• Includes 9 adapters and 2 rubber washers
• Simple screw-on installation, requires no vehicle modification
• Antenna mast color/design: Mossy Oak

Install Bay IBSSR

Panel Mount LED Switch

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Panel Mount LED Switch

• For Ultra-luxury high-end vehicles
• 12-24V universal usage
• Environmentally friendly and flame retardant materials
• Suitable for refit control of all equipment in the car
• Output short-circuit protection, overload protection
• Suitable for installation and use of all 12/24v battery vehicles

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List price $16.99
-12% $14.99

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• For Ultra-luxury high-end vehicles
• 12-24V universal usage
• Environmentally friendly and flame retardant materials
• Suitable for refit control of all equipment in the car
• Output short-circuit protection, overload protection
• Suitable for installation and use of all 12/24v battery vehicles

Stinger SPXCLA

Cigarette Lighter Adapter for Stinger SPXDBTC Bluetooth Controller

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Cigarette Lighter Adapter for Stinger SPXDBTC Bluetooth Controller

• Cigarette lighter adapter for SPXDBTC Bluetooth Controller
• For use with SPXD dynamic lighting
• Universal application, fits any vehicle
• Features on and off switch

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List price $39.00
-26% $29.00

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• Cigarette lighter adapter for SPXDBTC Bluetooth Controller
• For use with SPXD dynamic lighting
• Universal application, fits any vehicle
• Features on and off switch

PRV Audio DSP 2.8X TEAM

8-Channel Digital Sound Processor

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8-Channel Digital Sound Processor

• 8-Channel Digital Signal Processor
• Designed to integrate with aftermarket or factory OEM systems
• Integrated LCD display and intuitive interface
• Includes 2 audio inputs and 8 independent outputs
• 15-graphic equalizer with separate parametric equalizers

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List price $137.39
-20% $109.91

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• 8-Channel Digital Signal Processor
• Designed to integrate with aftermarket or factory OEM systems
• Integrated LCD display and intuitive interface
• Includes 2 audio inputs and 8 independent outputs
• 15-graphic equalizer with separate parametric equalizers

Limited time!

Kicker CXA360.4 (46CXA3604T)

360W RMS Class AB CX-Series 4 Channel Car Amplifier

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360W RMS Class AB CX-Series 4 Channel Car Amplifier

• 65 watts x 4 channel @ 4 ohm
• 90 watts x 4 channel @ 2 ohm
• Bridged: 180 watts x 2 channel @ 4 ohm
• Total RMS Power: 360 watts
• Class A/B 2 ohm Stable 4-Channel Amplifier

Save 30% off an NVX XKIT84 Amp Kit at Checkout!
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Kicker L7TDF122 (49L7TDF122)

1200W Peak (600W RMS) Loaded Single 12" Sealed Truck Enclosure

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1200W Peak (600W RMS) Loaded Single 12" Sealed Truck Enclosure

• Sealed truck enclosure with 1 12" Solo-Baric L7 Series Subwoofer
• 300-600 watts RMS Power Rating
• Final Impedance: 2-ohm
• Dimensions: 23 7/8" L x 6 1/2" H x 15" W

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Install Bay 3MRVBC

3M Red 22/18 Gauge Vinyl Butt Connectors

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3M Red 22/18 Gauge Vinyl Butt Connectors

• Butt Connectors
• 22/18 Gauge
• Color: Red
• Vinyl Insulated
• Makes Crimping Wires Fast and Easy
• Offers a Solid Connection of Wires

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-11% $16.99

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Only 3 Left!

• Butt Connectors
• 22/18 Gauge
• Color: Red
• Vinyl Insulated
• Makes Crimping Wires Fast and Easy
• Offers a Solid Connection of Wires

Kicker KW16400 (46KW16400)

400 ft 16-Gauge Oxygen-Free Copper Speaker Wire

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400 ft 16-Gauge Oxygen-Free Copper Speaker Wire

• 400 feet 16 gauge K-Series Speaker Wire
• Silver-tinned OFC (100% Oxygen-Free Copper) material
• Color: Blue and Frosted Clear

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$199.99

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• 400 feet 16 gauge K-Series Speaker Wire
• Silver-tinned OFC (100% Oxygen-Free Copper) material
• Color: Blue and Frosted Clear

Limited time!

Rockford Fosgate Punch P2 P2D2-12

800W Peak (400W RMS) 12" Punch Series Dual 2-ohm Car Subwoofer

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800W Peak (400W RMS) 12" Punch Series Dual 2-ohm Car Subwoofer

• Peak Power: 800 watts
• RMS Power: 400 watts
• Impedance: Dual 2 ohm
• Kevlar Reinforced Pulp Paper Cone
• Rubber Surround
• Mount depth: 6.40"
• Sensitivity: 86 dB

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List price $199.99
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-10% $179.99

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Used from: $152.99
Limited time!

JBL Cruise Black

40W Peak Loaded 2.5" Amplified Motorcycle and Powersport Handlebar Speaker Pods (Black)

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40W Peak Loaded 2.5" Amplified Motorcycle and Powersport Handlebar Speaker Pods (Black)

• Peak Power: 40 watts
• Built-in D amplifier
• Weatherproof IPX-5 Rating
• Dual 2-1/2 speakers enclosed in sealed pods
• Bluetooth support and audio playback
• USB 5V/1A charging for smartphones

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• Peak Power: 40 watts
• Built-in D amplifier
• Weatherproof IPX-5 Rating
• Dual 2-1/2 speakers enclosed in sealed pods
• Bluetooth support and audio playback
• USB 5V/1A charging for smartphones

JL Audio 8W1v3-4

150W RMS 8" W1v3 Series Single 4-ohm Car Subwoofer

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150W RMS 8" W1v3 Series Single 4-ohm Car Subwoofer


• RMS Power: 150 watts
• Impedance: Single 4 ohm
• Mica Injected Polypropylene - MIPP Cone
• Nitrile Butadiene Rubber NBR Surround
• Mount depth: 3.86"
• Sensitivity: 84.8 dB

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$199.99

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Used from: $169.99

PAC AVS21

Two-Way Audio/Video RCA Switcher

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Two-Way Audio/Video RCA Switcher

• Switchable Positive or Negative Trigger
• Slim and Compact Design
• Plug and Play Connection

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List price $149.00
-58% $61.99

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• Switchable Positive or Negative Trigger
• Slim and Compact Design
• Plug and Play Connection

NVX XHESG12

Universal High-Excursion Mesh Grille for Most 12" Subwoofers

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Universal High-Excursion Mesh Grille for Most 12" Subwoofers

• Universal high-excursion grille for 12" subwoofers
Does not work with NVX XC-series or VC-series v3 subs
• Finished in a non-reflective matte black color
• Includes grille and necessary mounting bracket
• Color: Matte black

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-37% $21.99

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Only 2 Left!

Used from: $16.09

• Universal high-excursion grille for 12" subwoofers
Does not work with NVX XC-series or VC-series v3 subs
• Finished in a non-reflective matte black color
• Includes grille and necessary mounting bracket
• Color: Matte black

Metra RGB-CB2

RGB Control Box for RGB2-4KT and Other Lighting Products

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RGB Control Box for RGB2-4KT and Other Lighting Products

• RGB Control Box for Multiple RGB Lighting Products
• Handles up to 10 amps of lights
• Mobile app support for Android or iOS smartphones
• 16 million color lighting options
• Compatible with Metra RGB2-4KT and more

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List price $195.99
-34% $129.99

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• RGB Control Box for Multiple RGB Lighting Products
• Handles up to 10 amps of lights
• Mobile app support for Android or iOS smartphones
• 16 million color lighting options
• Compatible with Metra RGB2-4KT and more

Shuriken SK-BT100

12V 100Ah Absorbed Glass Mat (AGM) Rechargeable Battery

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12V 100Ah Absorbed Glass Mat (AGM) Rechargeable Battery

• 12-volt Automotive Absorbed Glass Mat (AGM) Battery
• Sealed Absorbed Glass Mat (AGM) design
• Perfect for 2000 watts car audio stereo systems
• Can be mounted in any position
• Can be fully discharged and re-charged

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Belva BPS6RGB

400W Peak (200W RMS) Dual 6.5" Bluetooth ATV Powersports Amplified Sound System with LED Lights

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400W Peak (200W RMS) Dual 6.5" Bluetooth ATV Powersports Amplified Sound System with LED Lights

• Peak Power: 400 watts
• Built-in D amplifier
• Weatherproof IPX-5 Rating
• (2) 6-1/2" 2-way Coaxial speakers
• (2) 1" Balanced Dome Titanium Tweeters
• AUX input for smartphones and MP3

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• Peak Power: 400 watts
• Built-in D amplifier
• Weatherproof IPX-5 Rating
• (2) 6-1/2" 2-way Coaxial speakers
• (2) 1" Balanced Dome Titanium Tweeters
• AUX input for smartphones and MP3

Alpine S2-A60M

600W RMS Class D S-Series Monoblock Car Amplifier

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600W RMS Class D S-Series Monoblock Car Amplifier

• 330 watts x 1 channel @ 4 ohm
• 600 watts x 1 channel @ 2 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable Monoblock Amplifier

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Metra BC-703B

7" 6500K Round Motorcycle Headlight with Partial Halo

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7" 6500K Round Motorcycle Headlight with Partial Halo

• 7" round motorcycle headlight with black front face
• Six 10-watt LEDs (60 watts total)
• Partial white halos with amber turn signal function
• LED color: 6500K (Cool White)
• Die-cast aluminum housing and polycarbonate lens

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• 7" round motorcycle headlight with black front face
• Six 10-watt LEDs (60 watts total)
• Partial white halos with amber turn signal function
• LED color: 6500K (Cool White)
• Die-cast aluminum housing and polycarbonate lens

Limited time!

Sundown Audio SIA-2500D (A-SIA2500)

2500W RMS Class D SIA Series Monoblock Car Amplifier

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2500W RMS Class D SIA Series Monoblock Car Amplifier

• 2000 watts x 1 channel @ 4 ohm
• 2500 watts x 1 channel @ 2 ohm
• 2500 watts x 1 channel @ 1 ohm
• Total RMS Power: 2500 watts
• Class D 1 ohm Stable Monoblock Amplifier

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Stinger SI4612

12 ft. of 6-Channel 4000 Series RCA Interconnect Cables

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12 ft. of 6-Channel 4000 Series RCA Interconnect Cables

• 6-Channel 4000 Series RCA Interconnect Cables
• 12 ft. Cable Length
• Stinger Audiophile Grade
• Twisted Pair Construction
• Perfect for 5-Channel Amplifiers
• Durable Construction

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• 6-Channel 4000 Series RCA Interconnect Cables
• 12 ft. Cable Length
• Stinger Audiophile Grade
• Twisted Pair Construction
• Perfect for 5-Channel Amplifiers
• Durable Construction

Wet Sounds ADP Nautique -FC5-U

Upper Factory Mounting Brackets for Nautique FCT-5 Wakeboard Towers

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Upper Factory Mounting Brackets for Nautique FCT-5 Wakeboard Towers

• Upper mount speaker brackets for Nautique FCT-5 or Correct Craft towers
• Works with REV8X, REV8SC, REV10X, and REV10BSC
• Equipped with large wiring openings to accept wiring for LED tower lighting
• Includes (2) brackets and mounting screws

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• Upper mount speaker brackets for Nautique FCT-5 or Correct Craft towers
• Works with REV8X, REV8SC, REV10X, and REV10BSC
• Equipped with large wiring openings to accept wiring for LED tower lighting
• Includes (2) brackets and mounting screws

NVX XLCA2X

2-Channel Line Output Converter Digital Bass Enhancer with xBOOST, Impedance Matching, and Remote Level Control

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2-Channel Line Output Converter Digital Bass Enhancer with xBOOST, Impedance Matching, and Remote Level Control

• 2-Channel Speaker Level Inputs
• Adjustable xBOOST corrects for bass roll-off
• Handles up to 30V (225 watts RMS)
• Provides up to 9.5 Volts of output
• Auto turn-on via DC offset or Audio detection 
• Load selection switch (20, 60, or 20K ohm)
• Wired remote bass level control included
• LED Clip indicator

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• 2-Channel Speaker Level Inputs
• Adjustable xBOOST corrects for bass roll-off
• Handles up to 30V (225 watts RMS)
• Provides up to 9.5 Volts of output
• Auto turn-on via DC offset or Audio detection 
• Load selection switch (20, 60, or 20K ohm)
• Wired remote bass level control included
• LED Clip indicator

XS Power XV4900

1500W 6Ah Lithium Titanate Car Battery for Domestic and European Models

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1500W 6Ah Lithium Titanate Car Battery for Domestic and European Models

• 12 -Volt Car Battery
• Fits in many Domestic and European vehicles
• Fits on models including Land Rover, Audi, GMC and more
• Lithium Titanate battery
• Includes M6 terminal hardware
• Extremely lightweight design

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• 12 -Volt Car Battery
• Fits in many Domestic and European vehicles
• Fits on models including Land Rover, Audi, GMC and more
• Lithium Titanate battery
• Includes M6 terminal hardware
• Extremely lightweight design

XS Power D3400R (Reverse Polarity)

12-Volt Deep Cycle AGM Reverse Polarity Battery Power Cell with 3300-Max Amps for European Vehicles

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12-Volt Deep Cycle AGM Reverse Polarity Battery Power Cell with 3300-Max Amps for European Vehicles

• 12-volt Absorbent Glass Mat (AGM) Battery
• Sealed Absorbent Glass Mat (AGM) design
• Perfect for 2500W car audio stereo systems
• Compatible with most vehicle applications

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• 12-volt Absorbent Glass Mat (AGM) Battery
• Sealed Absorbent Glass Mat (AGM) design
• Perfect for 2500W car audio stereo systems
• Compatible with most vehicle applications

JBL BassPro Hub (JBLBASSPROHUBAM)

Loaded 11" Truck spare tire powered subwoofer enclosure with Bass Remote

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Loaded 11" Truck spare tire powered subwoofer enclosure with Bass Remote

• 11" Amplified Loaded Subwoofer System
• Built-In Class D Amplifier
• Variable Bass Boost
• Speaker-Level Inputs
• Wired Remote Bass Level Control

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• 11" Amplified Loaded Subwoofer System
• Built-In Class D Amplifier
• Variable Bass Boost
• Speaker-Level Inputs
• Wired Remote Bass Level Control

Sundown Audio SA-10 v.3 D2 10" (SA10V3D2)

3000W Peak (1500W RMS) 10" SA Series Dual 2-ohm Car Subwoofer (SAV310D2)

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3000W Peak (1500W RMS) 10" SA Series Dual 2-ohm Car Subwoofer (SAV310D2)

• Peak Power: 3000 watts
• RMS Power: 1500 watts
• Impedance: Dual 2 ohm
• Competition Grade Paper Cone
• Foam Surround
• Mount depth: 8.11"
• Sensitivity: 82.5 dB

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Tru Spec Single 10" (1446CO)

Empty Single 10" Vented Prefabricated Enclosure

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Empty Single 10" Vented Prefabricated Enclosure

• 10" Single Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 1 cubic feet
• Compatible for Sundown SA10V2 and similar subwoofers (Sold separately)

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List price $229.99
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Heise HE-SL32

72W Universal 32" Slimline Series Single Row 24 LED Light Bar

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72W Universal 32" Slimline Series Single Row 24 LED Light Bar

• Universal 32” Single Row LED Light Bar
• Water-resistant IPX-67 Rating
• Flood/Spot Combo Beam Pattern
• Integrated epoxy-encapsulated electronics
• Includes rear/side brackets

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• Universal 32” Single Row LED Light Bar
• Water-resistant IPX-67 Rating
• Flood/Spot Combo Beam Pattern
• Integrated epoxy-encapsulated electronics
• Includes rear/side brackets

DS18 DLRING12

12" Digital LED Acrylic Ring for Marine Loudspeakers and Speakers

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12" Digital LED Acrylic Ring for Marine Loudspeakers and Speakers

• 12" Digital LED Acrylic Ring for Marine Speakers
• Water resistant, perfect for harsh environment
• Easy installation, no major modification required
• Sealed acrylic (marine-grade) construction
• Light customizable via LC-DRM Bluetooth module

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• 12" Digital LED Acrylic Ring for Marine Speakers
• Water resistant, perfect for harsh environment
• Easy installation, no major modification required
• Sealed acrylic (marine-grade) construction
• Light customizable via LC-DRM Bluetooth module

Stinger SPC5010

10 Farad Pro Digital Hybrid Capacitor

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10 Farad Pro Digital Hybrid Capacitor

• Digital 10 Farad Capacitor
• Bright Red LED Voltage Display
• Monitor System Voltage
• 12-16 Volt Operation / 18 Volt Surge
• Louder And Cleaner Bass Response

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• Digital 10 Farad Capacitor
• Bright Red LED Voltage Display
• Monitor System Voltage
• 12-16 Volt Operation / 18 Volt Surge
• Louder And Cleaner Bass Response

Crimestopper SPSK-52

1-Way 5-Button Remote Start Keyless Entry Replacement Remote

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1-Way 5-Button Remote Start Keyless Entry Replacement Remote

• 1-Way 5-Button Replacement Remote
• Up to 2000 feet of range (0.37 miles)
• Replacement remote for select security systems

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• 1-Way 5-Button Replacement Remote
• Up to 2000 feet of range (0.37 miles)
• Replacement remote for select security systems

Wet Sounds WS-EQ IDM - B

Universal In-Dash Equalizer Mounting Bracket for WS-420SQ (Black)

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Universal In-Dash Equalizer Mounting Bracket for WS-420SQ (Black)

• In-dash marine equalizer mounting bracket
• Fits Wet Sounds WS 420 SQ equalizers (Sold Separately)
• Made with CNC billet aluminum material
• Mounting hardware included

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$129.99

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Only 1 Left!

• In-dash marine equalizer mounting bracket
• Fits Wet Sounds WS 420 SQ equalizers (Sold Separately)
• Made with CNC billet aluminum material
• Mounting hardware included

T-Spec V-DIST-PWR

Battery Terminal 3 Position Distribution Block

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Battery Terminal 3 Position Distribution Block

• Independently MANL fused outputs
• (1) 1/0 AWG - 8 AWG In
• (3) 4 AWG - 10 AWG Out
• Nickel finish for durability
• Compact design for simpler installation
• Solid brass construction for maximum conductivity

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• Independently MANL fused outputs
• (1) 1/0 AWG - 8 AWG In
• (3) 4 AWG - 10 AWG Out
• Nickel finish for durability
• Compact design for simpler installation
• Solid brass construction for maximum conductivity

NVX XSBI500 (Open Box, Good)

Microprocessor-Controlled 500 Amp, Dual Sensing Smart Relay Battery Isolator

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Microprocessor-Controlled 500 Amp, Dual Sensing Smart Relay Battery Isolator

• 500 Amp Battery Isolator
• 500 Amps at 12V Continuous
• 700 Amps Surge
• Switching Power: 10 - 16 VDC

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• 500 Amp Battery Isolator
• 500 Amps at 12V Continuous
• 700 Amps Surge
• Switching Power: 10 - 16 VDC

NVX XWS1275

75 ft 12-Gauge EnvyFlex 100% Oxygen Free Copper Speaker Wire (Blue/Gray)

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75 ft 12-Gauge EnvyFlex 100% Oxygen Free Copper Speaker Wire (Blue/Gray)

• True Spec 12 gauge EnvyFlex Speaker Wire
• Silver-tinned OFC (100% Oxygen-Free Copper) material
• Color: Blue and Gray
• Translucent EnvyFlex flexible multi-strand construction

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• True Spec 12 gauge EnvyFlex Speaker Wire
• Silver-tinned OFC (100% Oxygen-Free Copper) material
• Color: Blue and Gray
• Translucent EnvyFlex flexible multi-strand construction

Limited time!

Alpine R2-W12D4

2250W Peak (750W RMS) 12" R2-Series Dual 4-ohm Car Subwoofer

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2250W Peak (750W RMS) 12" R2-Series Dual 4-ohm Car Subwoofer

• Peak Power: 2250 watts
• RMS Power: 750 watts
• Impedance: Dual 4 ohm
• Kevlar Reinforced Pulp Paper Cone
• High-Amplitude Multi-Roll (HAMR) Surround
• Mount depth: 6.43"
• Sensitivity: 84.6 dB

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Kicker KPX500.1 (51KPX5001)

750W Peak (500W RMS) Class D KPX Series Monoblock Motorcycle Amplifier

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750W Peak (500W RMS) Class D KPX Series Monoblock Motorcycle Amplifier

• 150 watts x 1 channel @ 4 ohm
• 300 watts x 1 channel @ 2 ohm
• 500 watts x 1 channel @ 1 ohm
• Total RMS Power: 500 watts
• Class D 1 ohm Stable Monoblock Amplifier

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• 150 watts x 1 channel @ 4 ohm
• 300 watts x 1 channel @ 2 ohm
• 500 watts x 1 channel @ 1 ohm
• Total RMS Power: 500 watts
• Class D 1 ohm Stable Monoblock Amplifier

JL Audio M6-770STR-S-Rd

7.7" Trim Ring for Sport Grilles in JL Audio M6 Series Marine Speakers (Red)

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7.7" Trim Ring for Sport Grilles in JL Audio M6 Series Marine Speakers (Red)

• 7.7" trim ring for sport grilles in M6 speakers
• M6 speakers sold separately
• Color: Red

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• 7.7" trim ring for sport grilles in M6 speakers
• M6 speakers sold separately
• Color: Red

Install Bay 4 Gauge Amplifier Power Wiring Kit (AK4)

Amplifier Installation Power Kit with RCA Interconnect Cables and Fuse Holder with Fuse

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Amplifier Installation Power Kit with RCA Interconnect Cables and Fuse Holder with Fuse

• 4 Gauge Amplifier Installation Kit with RCA Interconnect Cables
• Perfect for 1600 Watts Amplifier Setup
• 17ft. Blue Power Cable
• 3ft. Black Ground Cable
• 17ft. Blue RCA Cable

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Beat-Sonic BR02

Universal Video Inputs Expansion for Vehicles with Single-Input Monitors

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Universal Video Inputs Expansion for Vehicles with Single-Input Monitors

• Adds additional inputs to display to monitor(s)
• Works great with vehicles limited to only one video input
• Equipped with a noise resistant aluminum shield
• Kit includes module and male to male RCA cable adapter

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• Adds additional inputs to display to monitor(s)
• Works great with vehicles limited to only one video input
• Equipped with a noise resistant aluminum shield
• Kit includes module and male to male RCA cable adapter

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    FAQ for Universal-Fit Audio & Electronics in 2013 A4

    Q: Can I upgrade or change the Universal-Fit Audio & Electronics in 2013 Audi A4?

    A: Yes this page includes all the best Universal-Fit Audio & Electronics that work in your A4.

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