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Products in these categories contain items that carry a guarantee to fit your BMW Z4 (change vehicle)
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All Alpine Car Speakers

Discover Alpine's entire lineup of high-performance car speakers.

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Alpine Speaker Installation & Accessories

Get the best from your Alpine speakers with our installation accessories.

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Alpine Vehicle Specific Speaker Kits

Tailor-made speaker kits by Alpine for your vehicle.

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Alpine 6.5" Speakers

Alpine's 6.5” speakers are engineered for balanced, high-quality sound.

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Alpine 6.5" Component Speakers

Alpine's 6.5” speakers deliver detailed and dynamic audio for an unmatched experience.

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Alpine 6x9" Speakers

Enjoy powerful, expansive sound with Alpine's high-performing 6x9” speakers.

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Alpine 6x9" Component Speakers

Alpine's large speakers for expansive sound in your vehicle.

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Alpine 4" Speakers

Compact and potent, Alpine's 4” speakers ensure quality sound in a small package.

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Alpine 8" Speakers

Compact yet powerful, Alpine's 8” speakers deliver quality audio.

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Other Alpine Car Speakers

Explore Alpine's variety of speakers for every car audio need.

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Alpine Tweeters

Alpine tweeters enhance high frequencies for crisp, clear audio.

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Alpine Speaker Packages & Bundles

Speaker packages and bundles for a complete Alpine audio upgrade.

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Alpine Marine Speakers

Weather-resistant Alpine speakers designed for the marine environment.

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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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Alpine HDZ-65C

600W Peak (200W RMS) 6.5” Status Series Hi-Res 2-Way Component 4-ohm Speaker System

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Alpine HDZ-65C

600W Peak (200W RMS) 6.5” Status Series Hi-Res 2-Way Component 4-ohm Speaker System

• 300 watts Peak Each, 100 watts RMS Each
• Hi-Res Audio Certified
• 1-1/4" Carbon Composite Cone Tweeters
• Carbon Composite cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

1+ offers available
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List price $1080.00
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Alpine EL-E65C-G

320W Peak (80W RMS) 6.5" EL Series 2-Way Component 4-ohm Car Speakers

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Alpine EL-E65C-G

320W Peak (80W RMS) 6.5" EL Series 2-Way Component 4-ohm Car Speakers

• 160 watts Peak Each, 40 watts RMS Each
• 3/4" Teteron Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

Free Speaker Accessory at Checkout!
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List price $110.00
-18% $89.95 /set

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Alpine BRV-S40C

240W Peak (80W RMS) 4" BassRev Series 2-Way 4-ohm Component Speaker System

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Alpine BRV-S40C

240W Peak (80W RMS) 4" BassRev Series 2-Way 4-ohm Component Speaker System

• 120 watts Peak Each, 40 watts RMS Each
• 3/4" Teteron Dome Tweeters
• Polypropylene-Mica cone material
• Impedance: 4 ohm
• Sensitivity: 84 dB

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  • Center Dash
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  • Behind Seat
List price $360.00
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-33% $239.95 /set

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Alpine BRV-S65

300W Peak (100W RMS) 6.5" BassRev Series 4-ohm 2-Way Coaxial Speaker Set

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Alpine BRV-S65

300W Peak (100W RMS) 6.5" BassRev Series 4-ohm 2-Way Coaxial Speaker Set

• 150 watts Peak Each, 50 watts RMS Each
• 1" Polyester cloth Dome Tweeters
• Polypropylene-Mica cone material
• BassRev tuning via Alpine OPTIM8
• Impedance: 4 ohm
• Sensitivity: 84 dB

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Alpine BRV-S40

240W Peak (80W RMS) 4" BassRev Series 4-ohm 2-Way Coaxial Speaker Set

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Alpine BRV-S40

240W Peak (80W RMS) 4" BassRev Series 4-ohm 2-Way Coaxial Speaker Set

• 120 watts Peak Each, 40 watts RMS Each
• 1" Polyester cloth Dome Tweeters
• Polypropylene-Mica cone material
• BassRev tuning via Alpine OPTIM8
• Impedance: 4 ohm
• Sensitivity: 84 dB

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List price $300.00
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Alpine S2-S40C

280W Peak (90W RMS) 4" S-Series Hi-Res 2-Way Component Car Speakers

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Alpine S2-S40C

280W Peak (90W RMS) 4" S-Series Hi-Res 2-Way Component Car Speakers

• 140 watts Peak Each, 45 watts RMS Each
• Hi-Res Audio Certified
• 1" Cloth Dome Tweeters
• Adjustable tweeters with threaded removable housing
• Polypropylene, Glass Fiber and Mica cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB

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1
List price $180.00
-17% $149.95 /set

In stock

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Alpine SXE-1726S (Open Box, Great)

440W Peak (80W RMS) 6.5" SXE Series 2-way 4-ohm Coaxial Car Speakers

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Alpine SXE-1726S (Open Box, Great)

440W Peak (80W RMS) 6.5" SXE Series 2-way 4-ohm Coaxial Car Speakers

• 220 watts Peak Each, 40 watts RMS Each
• 1" Carbon Graphite Dome tweeters
• Nano Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

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$41.97 /pair

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Alpine DM-65-G (Like New (Open Box))

400W Peak (100W RMS) 6.5" M Series 2-way 4-ohm Coaxial Car Speakers

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Alpine DM-65-G (Like New (Open Box))

400W Peak (100W RMS) 6.5" M Series 2-way 4-ohm Coaxial Car Speakers

• 200 watts Peak Each, 50 watts RMS Each
• Teteron Dome tweeters
• Injection Molded Polypropylene cone material
• Impedance: 4 ohm

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List price $110.00
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Alpine EL-E65-G (Open Box, Great)

320W Peak (80W RMS) 6.5" E Series 2-way 4-ohm Coaxial Car Speakers

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Alpine EL-E65-G (Open Box, Great)

320W Peak (80W RMS) 6.5" E Series 2-way 4-ohm Coaxial Car Speakers

• 160 watts Peak Each, 45 watts RMS Each
• 0.78" Teteron Dome tweeters
• Injection Molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

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Install kits available for this speaker

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Fits your Z4
List price $90.00
-46% $48.97 /pair

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Only 1 Left!

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Alpine S2-S65C (2-Pairs, 4-Total)

960W Peak (320W RMS) 6.5" S-Series 2-way Component Speaker System (2-Pairs)

S2S65C_2 big
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Alpine S2-S65C (2-Pairs, 4-Total)

960W Peak (320W RMS) 6.5" S-Series 2-way Component Speaker System (2-Pairs)

• 240 watts Peak Each, 80 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Save 15% Off Package Deals at Checkout!
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Fits your Z4
1
List price $440.00
-18% $359.90

In stock

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• 240 watts Peak Each, 80 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Lowest price in 30 days

Alpine HDZ-653 (2-Pairs, 4-Total)

1200W Peak (400W RMS) 6.5” Status Series 3-way Component Speaker System (2-Pairs)

HDZ653_2 big
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Alpine HDZ-653 (2-Pairs, 4-Total)

1200W Peak (400W RMS) 6.5” Status Series 3-way Component Speaker System (2-Pairs)

• 300 watts Peak Each, 100 watts RMS Each
• 1-1/4 Composite Dome Tweeters
• Carbon Composite cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Save 15% Off Package Deals at Checkout!
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List price $2880.00
-33% $1,919.90

In stock

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• 300 watts Peak Each, 100 watts RMS Each
• 1-1/4 Composite Dome Tweeters
• Carbon Composite cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Lowest price in 30 days

2021–Current Ford Bronco Alpine Component Status Plug & Play Speaker Bundle

600W Peak (200W RMS) 6.5” Status Series Hi-Res 2-Way Component 4-ohm Speaker System

ALP-STAT-SPK-21BRO big
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2021–Current Ford Bronco Alpine Component Status Plug & Play Speaker Bundle

600W Peak (200W RMS) 6.5” Status Series Hi-Res 2-Way Component 4-ohm Speaker System

• 300 watts Peak Each, 100 watts RMS Each
• Hi-Res Audio Certified
• 1-1/4" Carbon Composite Cone Tweeters
• Carbon Composite cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Save 15% Off Package Deals at Checkout!
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Fits your Z4
3
List price $1870.00
-33% $1,247.90

In stock

Only 2 Left!

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• 300 watts Peak Each, 100 watts RMS Each
• Hi-Res Audio Certified
• 1-1/4" Carbon Composite Cone Tweeters
• Carbon Composite cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Lowest price in 30 days

Alpine R2-S65C (2-Pairs, 4-Total)

1200W Peak (400W RMS) 6.5" R-Series 2-Way Component Speakers with Magnesium Hard-Dome Tweeters (2-Pairs)

R2S65C_2 big
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Alpine R2-S65C (2-Pairs, 4-Total)

1200W Peak (400W RMS) 6.5" R-Series 2-Way Component Speakers with Magnesium Hard-Dome Tweeters (2-Pairs)

• 300 watts Peak Each, 100 watts RMS Each
• 1" Magnesium Hard Dome Tweeters
• Glass Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Save 15% Off Package Deals at Checkout!
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Fits your Z4
1
List price $960.00
-33% $639.90

In stock

Add to Cart

• 300 watts Peak Each, 100 watts RMS Each
• 1" Magnesium Hard Dome Tweeters
• Glass Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Alpine S2-S65 (2-Pairs, 4-Total)

960W Peak (320W RMS) 6.5" S-Series 2-way Coaxial Car Speakers (2-Pairs)

S2S65_2 big
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Alpine S2-S65 (2-Pairs, 4-Total)

960W Peak (320W RMS) 6.5" S-Series 2-way Coaxial Car Speakers (2-Pairs)

• 240 watts Peak Each, 80 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Save 15% Off Package Deals at Checkout!
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found car based on your search
Fits your Z4
5
List price $360.00
-17% $299.90

In stock

Add to Cart

• 240 watts Peak Each, 80 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Lowest price in 30 days

Alpine HDZ-653S (2-Pairs, 4-Total)

1200W Peak (400W RMS) 6.5” Status Series Slim-fit 3-way 4-ohm Component Speaker System (2-Pairs)

HDZ653S_2 big
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Alpine HDZ-653S (2-Pairs, 4-Total)

1200W Peak (400W RMS) 6.5” Status Series Slim-fit 3-way 4-ohm Component Speaker System (2-Pairs)

• 300 watts Peak Each, 100 watts RMS Each
• 1" Dome Tweeters
• Carbon Composite cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Save 15% Off Package Deals at Checkout!
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found car based on your search
Fits your Z4
List price $2880.00
-33% $1,919.90

In stock

Only 1 Left!

Add to Cart

• 300 watts Peak Each, 100 watts RMS Each
• 1" Dome Tweeters
• Carbon Composite cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Alpine S2-S40 (2-Pairs, 4-Total)

560W Peak (180W RMS) 4" S-Series 2-way Coaxial Car Speakers (2-Pairs)

S2S40_2 big
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Alpine S2-S40 (2-Pairs, 4-Total)

560W Peak (180W RMS) 4" S-Series 2-way Coaxial Car Speakers (2-Pairs)

• 140 watts Peak Each, 45 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB

Save 15% Off Package Deals at Checkout!
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Fits your Z4
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List price $260.00
-15% $219.90

In stock

Add to Cart

• 140 watts Peak Each, 45 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB

Lowest price in 30 days

Alpine R2-S65 (2-Pairs, 4-Total)

1200W Peak (400W RMS) 6.5" R-Series 2-Way Coaxial Speakers with Magnesium Hard-Dome Tweeters (2-Pairs)

R2S65_2 big
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Alpine R2-S65 (2-Pairs, 4-Total)

1200W Peak (400W RMS) 6.5" R-Series 2-Way Coaxial Speakers with Magnesium Hard-Dome Tweeters (2-Pairs)

• 300 watts Peak Each, 100 watts RMS Each
• 1" Magnesium Hard Dome Tweeters
• Glass Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Save 15% Off Package Deals at Checkout!
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found car based on your search
Fits your Z4
12
List price $800.00
-34% $527.90

In stock

Add to Cart

• 300 watts Peak Each, 100 watts RMS Each
• 1" Magnesium Hard Dome Tweeters
• Glass Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Lowest price in 30 days

Alpine R2-S652 (2-Pairs, 4-Total)

1200W Peak (400W RMS) 6.5" R-Series PRO 2-Way Component Speakers with Magnesium Hard-Dome Tweeters (2-Pairs)

R2S652_2 big
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Alpine R2-S652 (2-Pairs, 4-Total)

1200W Peak (400W RMS) 6.5" R-Series PRO 2-Way Component Speakers with Magnesium Hard-Dome Tweeters (2-Pairs)

• 300 watts Peak Each, 100 watts RMS Each
• 1" Magnesium Hard Dome Tweeters
• Glass Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Save 15% Off Package Deals at Checkout!
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Fits your Z4
List price $1200.00
-33% $799.90

In stock

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• 300 watts Peak Each, 100 watts RMS Each
• 1" Magnesium Hard Dome Tweeters
• Glass Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Alpine S2-S80C (2-Pairs, 4-Total)

1040W Peak (340W RMS) 8" S-Series 2-way Component Speaker System (2-Pairs)

S2S80C_2 big
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Alpine S2-S80C (2-Pairs, 4-Total)

1040W Peak (340W RMS) 8" S-Series 2-way Component Speaker System (2-Pairs)

• 260 watts Peak Each, 85 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 80 dB

Save 15% Off Package Deals at Checkout!
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Fits your Z4
List price $580.00
-17% $479.90

In stock

Only 3 Left!

Add to Cart

• 260 watts Peak Each, 85 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 80 dB

Alpine S2-S40C 2 Pairs (4 Total)

140W Peak (45W RMS) 4" Next-Generation S-Series 2-way Component Speaker (2-Pairs)

S2S40C_2 big
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Alpine S2-S40C 2 Pairs (4 Total)

140W Peak (45W RMS) 4" Next-Generation S-Series 2-way Component Speaker (2-Pairs)

• 140 watts Peak Each, 45 watts RMS Each
• 3/4" Cloth Soft Dome Tweeters
• Interlaced Carbon-Glass Fiber Composite - IMPP cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your Z4
1
List price $360.00
-17% $299.90

In stock

Add to Cart

• 140 watts Peak Each, 45 watts RMS Each
• 3/4" Cloth Soft Dome Tweeters
• Interlaced Carbon-Glass Fiber Composite - IMPP cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB

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    Shop your 2010 Z4
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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
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    Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.

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