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American Bass STALLION 8 NEO (Sold Individually)

1600W Peak (800W RMS) 8" Stallion Series 4-ohm Midrange Speaker

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1600W Peak (800W RMS) 8" Stallion Series 4-ohm Midrange Speaker

• 800 watts Peak Each, 400 watts RMS Each
• Impedance: 4 ohm
• Sensitivity: 99.5 dB

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Install kits available for most vehicles

found car based on your search
Fits your 525i
List price $209.88
-39% $127.68

In stock.

DS18 8OCT400-8 (Sold Individually)

800W Peak (400W RMS) 8" Octagonal Series 8-ohm Mid-range Speaker

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800W Peak (400W RMS) 8" Octagonal Series 8-ohm Mid-range Speaker

• 800 watts Peak Each, 400 watts RMS Each
• Paper cone material
• Impedance: 8 ohm
• Sensitivity: 98 dB

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Install kits available for most vehicles

found car based on your search
Fits your 525i
$114.95

In stock.

Limited time!

DS18 PRO-ZXI8.4BM (Sold Individually)

700W Peak (350W RMS) 8" ZXi Series 4-Ohm Midrange Bullet Loudspeaker

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700W Peak (350W RMS) 8" ZXi Series 4-Ohm Midrange Bullet Loudspeaker

• 700 watts Peak Each, 350 watts RMS Each
• Aluminum Bullet Tweeters
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 99 dB

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Install kits available for most vehicles

found car based on your search
Fits your 525i
List price $112.99
-17% $93.95

In stock

AudioControl PNW-4

150W Peak (100W RMS) 4″ PNW Series 2 Way Coaxial 3-ohm Speakers

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150W Peak (100W RMS) 4″ PNW Series 2 Way Coaxial 3-ohm Speakers

• 75 watts Peak Each, 50 watts RMS Each
• Silk Dome Tweeters
• Rigid Poly Mica cone material
• Impedance: 3 ohm
• Sensitivity: 84.38 dB

1+ offers available
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additional information required
Fits select locations in your 525i.
Add vehicle details to confirm exact location.
1
List price $189.00
-11% $169.00 /pair

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Available Offers (2) for AudioControl PNW-4
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Flash Sale! Save at Checkout!
List price $189.00
-11% $169.00
$135.20 with coupon | Price details
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Sundown Audio LCMR-8 (LCMR84)

100W RMS 8" LCMR Series Pro Audio Midrange 4-ohm Speaker (S-LCMR84)

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100W RMS 8" LCMR Series Pro Audio Midrange 4-ohm Speaker (S-LCMR84)

• 100 watts RMS Each
• Impedance: 4 ohm
• Sensitivity: 94 dB

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Install kits available for most vehicles

found car based on your search
Fits your 525i
List price $83.99
-17% $69.99

Available

Ships in 10-14 days

DS18 PRO-X8BM (Sold Individually)

500W Peak (275W RMS) 8” PRO-X Series 8-ohm Mid-Range Bullet Loudspeaker

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500W Peak (275W RMS) 8” PRO-X Series 8-ohm Mid-Range Bullet Loudspeaker

• 550 watts Peak Each, 275 watts RMS Each
• Red tweeter
• Non-Pressed Paper cone material
• Impedance: 8 ohm
• Sensitivity: 96 dB

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Install kits available for most vehicles

found car based on your search
Fits your 525i
$70.95

In stock

Only 3 Left!

Limited time!

DS18 PRO-SM8.2 (Sold Individually)

500W Peak (250W RMS) 8” PRO Series Shallow Midrange 2-ohm Motorcycle and Powersports Loudspeaker

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500W Peak (250W RMS) 8” PRO Series Shallow Midrange 2-ohm Motorcycle and Powersports Loudspeaker

• 500 watts Peak, 250 watts RMS
• Water Resistance Paper cone material
• Impedance: 2 ohm
• Sensitivity: 97 dB

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Install kits available for most vehicles

found car based on your search
Fits your 525i
$77.95

In stock

DS18 8PRO400MR-4 (Sold Individually)

400W Peak (200W RMS) 8" Pro Midrange 4-ohm Speaker

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400W Peak (200W RMS) 8" Pro Midrange 4-ohm Speaker

• 400 watts Peak, 200 watts RMS
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 104 dB

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Install kits available for most vehicles

found car based on your search
Fits your 525i
List price $86.99
-17% $71.95

In stock.

Massive Audio MA8 (Sold Individually)

350W Peak (150W RMS) 8" MA Series 8-ohm Pro-Audio Midrange Car Speaker

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350W Peak (150W RMS) 8" MA Series 8-ohm Pro-Audio Midrange Car Speaker

• 350 watts Peak Each, 150 watts RMS Each
• Hardened Paper cone material
• Impedance: 8 ohm
• Sensitivity: 96 dB

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Install kits available for most vehicles

found car based on your search
Fits your 525i
List price $62.49
-28% $44.99

Available

Ships in 10-14 days

Diamond Audio MSMB82NEO

1200W Peak (600W RMS) 8" MSNEO Series Mid Bass 2-ohm Car and Motorcycle Speakers

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1200W Peak (600W RMS) 8" MSNEO Series Mid Bass 2-ohm Car and Motorcycle Speakers

• 600 watts Peak Each, 300 watts RMS Each
• DUPONT™ Kevlar cone material
• Impedance: 2 ohm
• Sensitivity: 95 dB

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Install kits available for most vehicles

found car based on your search
Fits your 525i
$879.99 /pair

In stock.

Earthquake Sound EQ8-4 (Sold Individually)

250W Peak 8” EQ Series 4-ohm Midbass Car Speaker

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250W Peak 8” EQ Series 4-ohm Midbass Car Speaker

• 250 watts Peak Each
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 97 dB

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Install kits available for most vehicles

found car based on your search
Fits your 525i
List price $85.00
-35% $54.99

In stock.

DS18 PRO-NS8.4 (Sold Individually)

400W Peak (200W RMS) 8" PRO-NS Series 4-ohm Shallow-mount Mid-range Speaker

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400W Peak (200W RMS) 8" PRO-NS Series 4-ohm Shallow-mount Mid-range Speaker

• 400 watts Peak Each, 200 watts RMS Each
• 1-1/4" Dome Tweeter
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 96 dB

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Install kits available for most vehicles

found car based on your search
Fits your 525i
$79.95

In stock.

American Bass NEO-8-MR (Sold Individually)

400W Peak (200W RMS) 8" NEO Series Midrange 4-ohm Speaker

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400W Peak (200W RMS) 8" NEO Series Midrange 4-ohm Speaker

• Peak Power: 400 watts
• RMS Power: 200 watts
• Impedance: 4 ohm
• Sensitivity: 98 dB

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Install kits available for most vehicles

found car based on your search
Fits your 525i
List price $115.72
-32% $78.52

In stock.

Deaf Bonce Machete MM-80L

400W Peak (200W RMS) 8" Machete Series Midrange 4-ohm Speakers

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400W Peak (200W RMS) 8" Machete Series Midrange 4-ohm Speakers

• 200 watts Peak Each, 100 watts RMS Each
• Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 93.8 dB

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Install kits available for most vehicles

found car based on your search
Fits your 525i
$64.90 /pair

Available

Ships in 10-14 days

Earthquake Sound EQ8-8 (Sold Individually)

250W Peak 8” EQ Series 8-ohm Midbass Car Speaker

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250W Peak 8” EQ Series 8-ohm Midbass Car Speaker

• 250 watts Peak Each
• Paper cone material
• Impedance: 8 ohm
• Sensitivity: 94.1 dB

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Install kits available for most vehicles

found car based on your search
Fits your 525i
List price $90.00
-28% $64.99

In stock.

DS18 PRO-CF8.4NR (Sold Individually)

600W Peak (300W RMS) 8" PRO Series Midbass 4-ohm Motorcycle and Powersports Loudspeaker

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600W Peak (300W RMS) 8" PRO Series Midbass 4-ohm Motorcycle and Powersports Loudspeaker

• 600 watts Peak, 300 watts RMS
• Water Resistant Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 99 dB

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Install kits available for most vehicles

found car based on your search
Fits your 525i
$251.95

In stock.

Diamond Audio MS8NEO

1400W Peak (700W RMS) 8″ MSNEO Series 4-ohm Midrange Car Speakers

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1400W Peak (700W RMS) 8″ MSNEO Series 4-ohm Midrange Car Speakers

• 700 watts Peak Each, 350 watts RMS Each
• Waterproof DUPONT™ Kevlar cone material
• Impedance: 4 ohm
• Sensitivity: 96 dB

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VIP Product Get $80.00 in rewards to spend later

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Install kits available for most vehicles

found car based on your search
Fits your 525i
$799.99 /pair

In stock.

Deaf Bonce Machete MM-80F

520W Peak (260W RMS) 8" Machete Series Midrange 4-ohm Speakers

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520W Peak (260W RMS) 8" Machete Series Midrange 4-ohm Speakers

• 260 watts Peak Each, 130 watts RMS Each
• Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 95.2 dB

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Install kits available for most vehicles

found car based on your search
Fits your 525i
$74.90 /pair

Available

Ships in 10-14 days

American Bass HAWK-8-MR (Sold Individually)

600W Peak (300W RMS) 8" Hawk Series Midrange 4-ohm Speaker with LED

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600W Peak (300W RMS) 8" Hawk Series Midrange 4-ohm Speaker with LED

• 600 watts Peak Power
• RMS Power: 300 watts
• Treated Paper cone material
• Impedance: 4 ohm
• Sensitivity: 97 dB
• Red LED lights

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Install kits available for most vehicles

found car based on your search
Fits your 525i
List price $73.38
-31% $50.81

In stock.

American Bass GF-8-MR (Sold Individually)

800W Peak (400W RMS) 8" Godfather Series Midrange 4-ohm Car Speaker

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800W Peak (400W RMS) 8" Godfather Series Midrange 4-ohm Car Speaker

• 800 watts Peak, 400 watts RMS
• Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 97 dB

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Install kits available for most vehicles

found car based on your search
Fits your 525i
List price $102.78
-29% $73.26

In stock.

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    FAQ for Speakers in 2004 525i

    Q: Can I upgrade or change the Speakers in 2004 BMW 525i?

    A: Yes this page includes all the best Speakers that work in your 525i.

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    Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

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