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All Kicker Car Speakers for your 2025 SQ8 e-tron close

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

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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.
Series
Many brands group their products into series or lines of products to help customers know the level of quality (good, better, best for example). You can filter by series and the brand using our guided browsing.
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Kicker KSMT2504 (47KSMT2504)

200W Peak (100W RMS) 2.5” KS Series Component Midrange and Tweeter Component Speaker Pods

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Kicker KSMT2504 (47KSMT2504)

200W Peak (100W RMS) 2.5” KS Series Component Midrange and Tweeter Component Speaker Pods

• 100 watts Peak Each, 50 watts RMS Each
• Aluminum cone material
• 1" Silk Dome tweeters in an adjustable tweeter pod
• Impedance: 4 ohm
• Sensitivity: 80 dB

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Fits multiple locations in your SQ8 e-tron
  • Corner Dash Tweeters
  • Behind Rear Seat
List price $249.99
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Kicker ST9MR4 (49ST9MR4)

1200W Peak (600W RMS) 9" Street Series Pro Midrange 4-ohm Speakers

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Kicker ST9MR4 (49ST9MR4)

1200W Peak (600W RMS) 9" Street Series Pro Midrange 4-ohm Speakers

• 600 watts Peak Each, 300 watts RMS Each
• Pressed Pulp Fiber square cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

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List price $219.99
-9% $199.99 /pair

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Kicker ST9MR8 (49ST9MR8)

1200W Peak (600W RMS) 9" Street Series Pro Midrange 8-ohm Speakers

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Kicker ST9MR8 (49ST9MR8)

1200W Peak (600W RMS) 9" Street Series Pro Midrange 8-ohm Speakers

• 600 watts Peak Each, 300 watts RMS Each
• Pressed Pulp Fiber square cone material
• Impedance: 8 ohm
• Sensitivity: 94 dB

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Install kits available for most vehicles

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Universal – fits most vehicles.
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List price $219.99
-9% $199.99 /pair

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    Kicker All Car Speakers Information

    Kicker car speakers are engineered to meet the highest audio standards in the challenging environment of a car. Kicker has a high quality option in all common sizes, making it easy to find a pair of Kicker speakers that fit your car. Kicker speakers are available in component systems as well as coaxial speakers, enabling them to work well in virtually any environment.
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    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.
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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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