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Products in these categories contain items that carry a guarantee to fit your BMW 328xi (change vehicle)
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All Kicker Car Speakers

Kicker's full range of car speakers offers unparalleled audio quality.

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Kicker Speaker Installation & Accessories

Upgrade your speaker setup with Kicker's installation accessories – top quality.

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Kicker Vehicle Specific Speaker Kits

Vehicle specific speaker kits from Kicker are a no brainer for an easier installation and custom fit.

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Kicker 6.5" Speakers

Kicker's 6.5" speakers – where quality meets innovation for pure audio joy.

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Kicker 6x9" Speakers

Kicker's 6x9" speakers – bigger size, bigger sound, unmatched quality.

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Kicker 3.5" Speakers

Small but mighty, Kicker's 3.5" speakers pack a punch in a compact package.

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Kicker 4" Speakers

Kicker's 4" speakers: Compact design, powerful sound, unbeatable quality.

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Kicker 5.25" Speakers

Get ready for an audio upgrade with Kicker's 5.25" speakers – pure clarity.

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Kicker 5.25" Component Speakers

Immerse yourself in sound with Kicker's 5.25" component speakers.

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Kicker Midbass & Midrange Speakers

Feel every beat with Kicker's midbass & midrange drivers – audio excellence.

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Other Kicker Car Speakers

Discover Kicker's range of speakers, delivering exceptional audio in every model.

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Kicker Tweeters

Crisp highs guaranteed with Kicker's tweeters – the detail you've been missing.

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Kicker Pro Audio Tweeters

Experience high-end audio with Kicker's pro audio tweeters and drivers.

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Kicker Pro Audio Midrange Drivers

Experience professional-grade sound with Kicker's pro and full-range drivers.

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Kicker Speaker Packages & Bundles

Upgrade your entire system with Kicker's speaker packages and bundles.

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Kicker Harley-Davidson Speakers

Rev up your ride with Kicker's premium Harley-Davidson speakers.

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Kicker Center Channel Speakers

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Kicker Marine Speakers

Dominate the seas with Kicker's marine speakers for boats – aquatic audio at its best.

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Speaker Size
Refers to the size of the speaker measured in inches. Every vehicle has standard application sizes. Please use our vehicle fitment guide for your vehicle's specific speaker sizes if you do not know them.
Design
The number of individual drivers in a car speaker. Speakers with 2 drivers are known as a 2-way, and 3 drivers are known as a 3-way. Component systems are often referred to as "separates" because the tweeter is not attached to the midwoofer (main speaker driver) and mounts separately in a location such as a door post. Component systems typically come with an external crossover so you can easily adjust the high and low frequencies sent to both the midwoofer and the tweeter. Center channel speakers are great for those looking to have surround sound in their vehicle.
RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
Sensitivity
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
  Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
Shallow Mount Installation
This means that the subwoofer/speaker is designed to be installed in areas that do not have a lot of space. Shallow mount subwoofers are typically found under a seat or behind the seat in some trucks.

Shallow mount speakers will typically have a mounting depth of 2" or less, while shallow mount subwoofers will typically have a mounting depth of 3" or less.
Tweeter Design
Designs such as cone, dome, semi-dome, balanced dome, and whizzer are most popular. Cone tweeters are simple, efficient and typically are the most reasonably priced. Dome tweeters are used in most home speakers, and provide a smoother and more accurate sound. Semi-dome design is one with a dome placed inside a cone. A Balanced dome driver is a semi-dome with equal reproduction area given the cone and dome portions of the driver. A whizzer tweeter is a separate tweeter cone driven by the voice coil of the woofer.
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Kicker 51KST2504

450W Peak (150W RMS) 1" KS Series 4-ohm Car Tweeters

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Kicker 51KST2504

450W Peak (150W RMS) 1" KS Series 4-ohm Car Tweeters

• 1" KS Series Tweeters
• 225 watts Peak Each
• 75 watts RMS Each
• 4 ohm Impedance

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Install kits available for most vehicles

additional information required
Fits select locations in your 328xi.
Add vehicle details to confirm exact location.
1
List price $139.99
-14% $119.99 /pair

In stock

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• 1" KS Series Tweeters
• 225 watts Peak Each
• 75 watts RMS Each
• 4 ohm Impedance

Kicker 51KST2004

390W Peak (130W RMS) 0.75" KS Series 4-ohm Car Tweeters

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Kicker 51KST2004

390W Peak (130W RMS) 0.75" KS Series 4-ohm Car Tweeters

• 3/4" KS Series Tweeters
• 195 watts Peak Each
• 65 watts RMS Each
• 4 ohm Impedance

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List price $119.99
-17% $99.99 /pair

In stock

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• 3/4" KS Series Tweeters
• 195 watts Peak Each
• 65 watts RMS Each
• 4 ohm Impedance

Limited time!

Kicker KSC4 (51KSC404)

300W Peak (150W RMS) 4" KS Series 2 Way Coaxial 4-ohm Speakers

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Kicker KSC4 (51KSC404)

300W Peak (150W RMS) 4" KS Series 2 Way Coaxial 4-ohm Speakers

• 150 watts Peak Each, 75 watts RMS Each
• 1/2" Silk Balanced Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Free Speaker Accessory at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
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Install kits available for most vehicles

additional information required
Fits select locations in your 328xi.
Add vehicle details to confirm exact location.
3
List price $119.99
-17% $99.99 /pair

In stock

Add to Cart
Used from: $59.99
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Limited time!

Kicker CSC5 (46CSC54)

450W Peak (150W RMS) 5.25” CS Series 2 Way Coaxial 4-ohm Speakers

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Kicker CSC5 (46CSC54)

450W Peak (150W RMS) 5.25” CS Series 2 Way Coaxial 4-ohm Speakers

• 225 watts Peak Each, 75 watts RMS Each
• 1/2" PEI (Polyetherimide) Balanced Dome tweeters with neodymium magnets
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

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Free or discounted install kits when available.

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5
List price $119.99
Save $40.03
-33% $79.96 /pair

In stock

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Used from: $69.99 Like New from: $84.99
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Kicker DSC50 (43DSC504)

400W Peak (100W RMS) 5.25" DS Series 2-way 4-ohm Coaxial Car Speakers (DSC504)

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Kicker DSC50 (43DSC504)

400W Peak (100W RMS) 5.25" DS Series 2-way 4-ohm Coaxial Car Speakers (DSC504)

• 200 watts Peak Each, 50 watts RMS Each
• 1/2" PEI (Polyetherimide) Balanced Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

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Free or discounted install kits when available.

Fits select models only.
Add details to confirm fitment.
17
List price $84.99
-12% $74.99 /pair

In stock

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Kicker CST204 (46CST204) (Open Box, Great)

200W Peak (100W RMS) 3/4” CS Series 4-ohm Titanium Dome Tweeters

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Kicker CST204 (46CST204) (Open Box, Great)

200W Peak (100W RMS) 3/4” CS Series 4-ohm Titanium Dome Tweeters

• 3/4" CS Series Dome Tweeters
• 100 watts Peak Each
• 50 watts RMS Each
• 4 ohm Impedance

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Install kits available for most vehicles

additional information required
Fits select locations in your 328xi.
Add vehicle details to confirm exact location.
List price $79.99
-39% $48.99 /pair

In stock

Only 1 Left!

Add to Cart

• 3/4" CS Series Dome Tweeters
• 100 watts Peak Each
• 50 watts RMS Each
• 4 ohm Impedance

Kicker CSC4 (46CSC44) (Open Box, Great)

300W Peak (100W RMS) 4” CS Series 2 Way Coaxial 4-ohm Speakers

46CSC44 big
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Kicker CSC4 (46CSC44) (Open Box, Great)

300W Peak (100W RMS) 4” CS Series 2 Way Coaxial 4-ohm Speakers

• 150 watts Peak Each, 50 watts RMS Each
• 1/2" PEI (Polyetherimide) Balanced Dome Tweeters
• Polypropylene cone material
• Steel mesh speaker grilles included
• Impedance: 4 ohm
• Sensitivity: 88 dB

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

Install kits available for most vehicles

additional information required
Fits select locations in your 328xi.
Add vehicle details to confirm exact location.
List price $84.99
-38% $52.49 /pair

In stock

Add to Cart

• 150 watts Peak Each, 50 watts RMS Each
• 1/2" PEI (Polyetherimide) Balanced Dome Tweeters
• Polypropylene cone material
• Steel mesh speaker grilles included
• Impedance: 4 ohm
• Sensitivity: 88 dB

Kicker KSC4 (51KSC404) (Open Box, Good)

300W Peak (150W RMS) 4" KS Series 2 Way Coaxial 4-ohm Speakers

51KSC404 big
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Kicker KSC4 (51KSC404) (Open Box, Good)

300W Peak (150W RMS) 4" KS Series 2 Way Coaxial 4-ohm Speakers

• 150 watts Peak Each, 75 watts RMS Each
• 1/2" Silk Balanced Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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

Install kits available for most vehicles

additional information required
Fits select locations in your 328xi.
Add vehicle details to confirm exact location.
List price $119.99
-50% $59.99 /pair

In stock

Only 1 Left!

Add to Cart

• 150 watts Peak Each, 75 watts RMS Each
• 1/2" Silk Balanced Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Kicker CSC5 (46CSC54) (Like New (Open Box))

450W Peak (150W RMS) 5.25” CS Series 2 Way Coaxial 4-ohm Speakers

46CSC54 big
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Kicker CSC5 (46CSC54) (Like New (Open Box))

450W Peak (150W RMS) 5.25” CS Series 2 Way Coaxial 4-ohm Speakers

• 225 watts Peak Each, 75 watts RMS Each
• 1/2" PEI (Polyetherimide) Balanced Dome tweeters with neodymium magnets
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

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

Free or discounted install kits when available.

Fits select models only.
Add details to confirm fitment.
List price $119.99
-29% $84.99 /pair

In stock

Only 2 Left!

Add to Cart

• 225 watts Peak Each, 75 watts RMS Each
• 1/2" PEI (Polyetherimide) Balanced Dome tweeters with neodymium magnets
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

Limited time!

Kicker CSC4 (46CSC44)

300W Peak (100W RMS) 4” CS Series 2 Way Coaxial 4-ohm Speakers

46CSC44 big
Go to item page Right Arrow Icon of Right Arrow

Kicker CSC4 (46CSC44)

300W Peak (100W RMS) 4” CS Series 2 Way Coaxial 4-ohm Speakers

• 150 watts Peak Each, 50 watts RMS Each
• 1/2" PEI (Polyetherimide) Balanced Dome Tweeters
• Polypropylene cone material
• Steel mesh speaker grilles included
• Impedance: 4 ohm
• Sensitivity: 88 dB

Free Speaker Accessory at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

additional information required
Fits select locations in your 328xi.
Add vehicle details to confirm exact location.
1
List price $84.99
Save 29%
-29% $59.96 /pair

In stock

Add to Cart
Used from: $52.49
See all 6 special offers

Kicker DSC40 (43DSC404)

240W Peak (60W RMS) 4" DS Series 2-way 4-ohm Coaxial Car Speakers

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Kicker DSC40 (43DSC404)

240W Peak (60W RMS) 4" DS Series 2-way 4-ohm Coaxial Car Speakers

• 120 watts Peak Each, 30 watts RMS Each
• 1/2" PEI (Polyetherimide) Balanced Dome tweeters
• Polypropylene cone material with Extended Voice Coil (EVC) technology
• Impedance: 4 ohm
• Sensitivity: 88 dB

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

Install kits available for most vehicles

additional information required
Fits select locations in your 328xi.
Add vehicle details to confirm exact location.
2
List price $74.99
-13% $64.99 /pair

In stock

Add to Cart
See all 8 special offers

Kicker KSS5 (51KSS504)

400W Peak (200W RMS) 5.25" KS Series 2 Way Component 4-ohm Speaker System

51KSS504 big
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Kicker KSS5 (51KSS504)

400W Peak (200W RMS) 5.25" KS Series 2 Way Component 4-ohm Speaker System

• 200 watts Peak Each, 100 watts RMS Each
• 1" Silk Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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VIP Product Get $25.00 in rewards to spend later

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Free or discounted install kits when available.

Fits select models only.
Add details to confirm fitment.
2
List price $279.99
-11% $249.99 /set

In stock

Only 2 Left!

Add to Cart
See all 12 special offers

Kicker KSC5 (51KSC504)

300W Peak (150W RMS) 5.25" KS Series 2 Way Coaxial 4-ohm Speakers

51KSC504 big
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Kicker KSC5 (51KSC504)

300W Peak (150W RMS) 5.25" KS Series 2 Way Coaxial 4-ohm Speakers

• 150 watts Peak Each, 75 watts RMS Each
• 1/2" Silk Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

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

Free or discounted install kits when available.

Fits select models only.
Add details to confirm fitment.
List price $149.99
-13% $129.99 /pair

In stock

Add to Cart
See all 12 special offers

Kicker CSC5 (46CSC54) (Open Box, Great)

450W Peak (150W RMS) 5.25” CS Series 2 Way Coaxial 4-ohm Speakers

46CSC54 big
Go to item page Right Arrow Icon of Right Arrow

Kicker CSC5 (46CSC54) (Open Box, Great)

450W Peak (150W RMS) 5.25” CS Series 2 Way Coaxial 4-ohm Speakers

• 225 watts Peak Each, 75 watts RMS Each
• 1/2" PEI (Polyetherimide) Balanced Dome tweeters with neodymium magnets
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

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

Free or discounted install kits when available.

Fits select models only.
Add details to confirm fitment.
List price $119.99
-42% $69.99 /pair

In stock

Add to Cart

• 225 watts Peak Each, 75 watts RMS Each
• 1/2" PEI (Polyetherimide) Balanced Dome tweeters with neodymium magnets
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

Limited time!

Kicker CST204 (46CST204)

200W Peak (100W RMS) 3/4” CS Series 4-ohm Titanium Dome Tweeters

CST20 big
Go to item page Right Arrow Icon of Right Arrow

Kicker CST204 (46CST204)

200W Peak (100W RMS) 3/4” CS Series 4-ohm Titanium Dome Tweeters

• 3/4" CS Series Dome Tweeters
• 100 watts Peak Each
• 50 watts RMS Each
• 4 ohm Impedance

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

Install kits available for most vehicles

additional information required
Fits select locations in your 328xi.
Add vehicle details to confirm exact location.
3
List price $79.99
Save 30%
-30% $55.96 /pair

In stock

Add to Cart
Used from: $48.99

Kicker 49ST3TRK (ST3TW)

1" Bullet Tweeter Recone Kit for Kicker ST 1" Bullet Tweeter

49ST3TRK big
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Kicker 49ST3TRK (ST3TW)

1" Bullet Tweeter Recone Kit for Kicker ST 1" Bullet Tweeter

• Aluminum diaphragm recone kit
• Designed for Kicker ST3TW bullet tweeter
• Field replaceable - no glue required.

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List price $29.99
-33% $19.99

In stock

Only 2 Left!

Add to Cart

• Aluminum diaphragm recone kit
• Designed for Kicker ST3TW bullet tweeter
• Field replaceable - no glue required.

Limited time!

Kicker KM65 (45KM654)

380W Peak (130W RMS) 6.5" KM Series 2 Way Coaxial 4-ohm Marine Speakers with Grilles

KM65 big
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Kicker KM65 (45KM654)

380W Peak (130W RMS) 6.5" KM Series 2 Way Coaxial 4-ohm Marine Speakers with Grilles

• 195 watts Peak Each, 65 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome tweeters
• Includes 2 charcoal and 2 white grilles
• Injection Molded Polypropylene material
• Impedance: 4 ohm
• Sensitivity: 90 dB
• Mounting Depth: 2-7/8"

shipping truck icon Free shipping in USA. Provide zip for delivery date.
2
List price $219.99
Save $60.03
-27% $159.96 /pair

In stock

Add to Cart
Used from: $139.99 Like New from: $169.99

• 195 watts Peak Each, 65 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome tweeters
• Includes 2 charcoal and 2 white grilles
• Injection Molded Polypropylene material
• Impedance: 4 ohm
• Sensitivity: 90 dB
• Mounting Depth: 2-7/8"

Kicker ST3TW (49ST3TW)

100W Peak (50W RMS) 1" Street Series 4-ohm Loaded-Horn Bullet Tweeter

ST3TW big
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Kicker ST3TW (49ST3TW)

100W Peak (50W RMS) 1" Street Series 4-ohm Loaded-Horn Bullet Tweeter

• 1” Street Series Pro-Audio Loaded-Horn Bullet Tweeter
• 100 watts Peak Each
• 50 watts RMS Each
• 4 ohm Impedance

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List price $89.99
-11% $79.99

Available

Ships in 10-14 days

Add to Cart

• 1” Street Series Pro-Audio Loaded-Horn Bullet Tweeter
• 100 watts Peak Each
• 50 watts RMS Each
• 4 ohm Impedance

Limited time!

Kicker KM65L (45KM654L)

390W Peak (130W RMS) 6.5" KM Series 2 Way Coaxial 4-ohm Marine Speakers with RGB LED and Grilles

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Kicker KM65L (45KM654L)

390W Peak (130W RMS) 6.5" KM Series 2 Way Coaxial 4-ohm Marine Speakers with RGB LED and Grilles

• 195 watts Peak Each, 65 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome tweeters
• Includes 2 charcoal and 2 white grilles
• Injection Molded Polypropylene with UV Protection cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB
• Mounting Depth: 2-3/8"

shipping truck icon Free shipping in USA. Provide zip for delivery date.
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VIP Product Get $18.40 in rewards to spend later

2
List price $249.99
Save $66.03
-26% $183.96 /pair

In stock

Add to Cart
Used from: $180.68
Limited time!

Kicker KM8L (45KM84L)

600W Peak (300W RMS) 8" KM Series 2 Way Coaxial 4-ohm Marine Speakers with RGB LED and Grilles

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Kicker KM8L (45KM84L)

600W Peak (300W RMS) 8" KM Series 2 Way Coaxial 4-ohm Marine Speakers with RGB LED and Grilles

• 300 watts Peak Each, 150 watts RMS Each
• 1" PEI (Polyetherimide) Dome tweeters
• Includes 2 charcoal and 2 white grilles
• Injection Molded Polypropylene with UV Protection cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB
• Mounting Depth: 3-5/16"

shipping truck icon Free shipping in USA. Provide zip for delivery date.
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VIP Product Get $20.80 in rewards to spend later

2
List price $289.99
Save $82.03
-28% $207.96 /pair

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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.

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