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Infinity Kappa 20mx (KAPPA-20MX) (Like New (Open Box))

390W Peak (130W RMS) 2" Kappa Series Midrange 2.5-ohm Car Speakers

Kappa 20mx big
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390W Peak (130W RMS) 2" Kappa Series Midrange 2.5-ohm Car Speakers

• 195 watts Peak Each, 65 watts RMS Each
• Glass Fiber cone material
• Impedance: 2.5 ohm
• Sensitivity: 90 dB

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Install kits available for most vehicles

found car based on your search
Fits the following location in your 540i
  • Front Door
List price $180.00
-43% $101.99 /pair

In stock

Only 1 Left!

• 195 watts Peak Each, 65 watts RMS Each
• Glass Fiber cone material
• Impedance: 2.5 ohm
• Sensitivity: 90 dB

Deaf Bonce Machete MM-50L

320W Peak (196W RMS) 5.2" Machete Series Midrange 4-ohm Speakers

MM-50L big
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320W Peak (196W RMS) 5.2" Machete Series Midrange 4-ohm Speakers

• 160 watts Peak Each, 98 watts RMS Each
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 91.6 dB

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Install kits available for most vehicles

found car based on your search
Fits multiple locations in your 540i
  • Front Door
  • Rear Deck Corner
1
$44.90 /pair

In stock

DS18 PRO-X5.4BM (Sold Individually)

300W Peak (150W RMS) 5.25” PRO-X Series 4-ohm Mid-Range Loudspeaker

PRO-X5.4BM big
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300W Peak (150W RMS) 5.25” PRO-X Series 4-ohm Mid-Range Loudspeaker

• 300 watts Peak Each, 150 watts RMS Each
• Red Aluminum Bullet tweeters
• Non-Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
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Install kits available for most vehicles

found car based on your search
Fits multiple locations in your 540i
  • Front Door
  • Rear Deck Corner
$49.95

In stock

DS18 PRO-X5.4M (Sold Individually)

300W Peak (150W RMS) 5.25” PRO-X Series 4-ohm Midrange Loudspeaker

PRO-X5.4M big
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300W Peak (150W RMS) 5.25” PRO-X Series 4-ohm Midrange Loudspeaker

• 300 watts Peak Each, 150 watts RMS Each
• Red Steel Basket
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
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Install kits available for most vehicles

found car based on your search
Fits multiple locations in your 540i
  • Front Door
  • Rear Deck Corner
1
$44.95

In stock.

DS18 PRO-CUPOLA3 (Sold Individually)

400W Peak (150W RMS) 5.25" Pro Audio Soft Dome Midrange 4-ohm Loudspeaker

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400W Peak (150W RMS) 5.25" Pro Audio Soft Dome Midrange 4-ohm Loudspeaker

• 400 watts Peak, 150 watts RMS
• Coated non-resonant soft dome material
• Ultra-high sound quality
• Perfect for studio monitors or Hi-Fi applications
• Impedance: 4 ohm
• Sensitivity: 96 dB

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Install kits available for most vehicles

found car based on your search
Fits multiple locations in your 540i
  • Front Door
  • Rear Deck Corner
List price $239.99
-17% $199.95

In stock.

DS18 PRO-X5M

300W Peak (150W RMS) 5.25” PRO-X Series 8-ohm Midrange Car Loudspeaker

PRO-X5M big
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300W Peak (150W RMS) 5.25” PRO-X Series 8-ohm Midrange Car Loudspeaker

• 300 watts Peak Each, 150 watts RMS Each
• Glossy red steel basket material
• Non-Pressed Paper cone material
• Impedance: 8 ohm
• Sensitivity: 90 dB

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

Install kits available for most vehicles

found car based on your search
Fits multiple locations in your 540i
  • Front Door
  • Rear Deck Corner
$44.95

In stock.

DS18 PRO-X5.4BM (Sold Individually) with Sound Damping

300W Peak (150W RMS) 5.25” PRO-X Series 4-ohm Mid-Range Loudspeaker + NVX SDBSK2 Premium Sound Damping

PROX54BM_SDBSK2 big
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300W Peak (150W RMS) 5.25” PRO-X Series 4-ohm Mid-Range Loudspeaker + NVX SDBSK2 Premium Sound Damping

• 300 watts Peak Each, 150 watts RMS Each
• Red Aluminum Bullet tweeters
• Non-Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your 540i
46
List price $68.69
-12% $60.44

In stock

• 300 watts Peak Each, 150 watts RMS Each
• Red Aluminum Bullet tweeters
• Non-Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

DS18 PRO-X5.4BM with Speaker Installation Kit

Includes: (2) 5.25” Mid-Range Loudspeaker with Bullet, 2 Piece Foam Speaker Ring Kit, Sound Damping Kit

(2)PRO-X5.4BM, FRING525, SDSK2 big
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Includes: (2) 5.25” Mid-Range Loudspeaker with Bullet, 2 Piece Foam Speaker Ring Kit, Sound Damping Kit

• 300 watts Max
• 150 watts RMS
• Non-Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 92.7 dB
• Mounting Depth: 2.6"

shipping truck icon Free shipping in USA. Provide zip for delivery date.
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Install kits available for most vehicles

found car based on your search
Fits multiple locations in your 540i
  • Front Door
  • Rear Deck Corner
48
List price $138.63
-15% $118.08

In stock

• 300 watts Max
• 150 watts RMS
• Non-Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 92.7 dB
• Mounting Depth: 2.6"

DS18 PRO-X5.4M (Pair)

600W Peak (300W RMS) 5.25” PRO-X Series Midrange Loudspeakers (Pair)

PROX54M_2 big
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600W Peak (300W RMS) 5.25” PRO-X Series Midrange Loudspeakers (Pair)

• 300 watts Peak Each, 150 watts RMS Each
• Red Steel Basket
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your 540i
1
List price $89.90
$87.20

In stock.

• 300 watts Peak Each, 150 watts RMS Each
• Red Steel Basket
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

DS18 PRO-X5M (Pair)

600W Peak (300W RMS) 5.25” PRO-X Series Midrange Loudspeakers (Pair)

PROX5M_2 big
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600W Peak (300W RMS) 5.25” PRO-X Series Midrange Loudspeakers (Pair)

• 300 watts Peak Each, 150 watts RMS Each
• Red Steel Basket
• Paper cone material
• Impedance: 8 ohm
• Sensitivity: 90 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your 540i
List price $89.90
$87.20

In stock.

• 300 watts Peak Each, 150 watts RMS Each
• Red Steel Basket
• Paper cone material
• Impedance: 8 ohm
• Sensitivity: 90 dB

DS18 PRO-X5M with Speaker Installation Kit

150W RMS5.25” 8-Ohms Coaxial Speaker + 5.25" Speaker Baffles, Sound Dampening, Roller, and Panel Removal Kit

(2)PRO-X5M, XBAF525, SDSK2, SDRLR1, BTK106 big
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150W RMS5.25” 8-Ohms Coaxial Speaker + 5.25" Speaker Baffles, Sound Dampening, Roller, and Panel Removal Kit

• 300 watts Peak Each, 150 watts RMS Each
• Paper cone material
• Impedance: 8 ohm
• Sensitivity: 90 dB

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

Install kits available for most vehicles

found car based on your search
Fits multiple locations in your 540i
  • Front Door
  • Rear Deck Corner
147
List price $162.61
-20% $129.93

In stock.

• 300 watts Peak Each, 150 watts RMS Each
• Paper cone material
• Impedance: 8 ohm
• Sensitivity: 90 dB

DS18 PRO-X5.4M with Speaker Installation Kit

300W Peak (150W RMS) 5.25” PRO-X Series 4-Ohms Coaxial Car Speaker + 5.25" Speaker Baffles, Sound Dampening, Roller, and Panel Removal Kit

(2)PRO-X5.4M, XBAF525, SDSK2, SDRLR1, BTK106 big
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300W Peak (150W RMS) 5.25” PRO-X Series 4-Ohms Coaxial Car Speaker + 5.25" Speaker Baffles, Sound Dampening, Roller, and Panel Removal Kit

• 300 watts Peak Each, 150 watts RMS Each
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

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

Install kits available for most vehicles

found car based on your search
Fits multiple locations in your 540i
  • Front Door
  • Rear Deck Corner
148
List price $162.61
-20% $129.93

In stock.

• 300 watts Peak Each, 150 watts RMS Each
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

DS18 PRO-X5.4M (Sold Individually) with Sound Damping

300W Peak (150W RMS) 5.25” PRO-X Series 4-ohm Midrange Loudspeaker + NVX SDBSK2 Premium Sound Damping

PROX54M_SDBSK2 big
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300W Peak (150W RMS) 5.25” PRO-X Series 4-ohm Midrange Loudspeaker + NVX SDBSK2 Premium Sound Damping

• 300 watts Peak Each, 150 watts RMS Each
• Red Steel Basket
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your 540i
47
List price $63.69
-13% $55.44

In stock.

• 300 watts Peak Each, 150 watts RMS Each
• Red Steel Basket
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

DS18 PRO-X5M with Sound Damping

300W Peak (150W RMS) 5.25” PRO-X Series 8-ohm Midrange Car Loudspeaker + NVX SDBSK2 Premium Sound Damping

PROX5M_SDBSK2 big
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300W Peak (150W RMS) 5.25” PRO-X Series 8-ohm Midrange Car Loudspeaker + NVX SDBSK2 Premium Sound Damping

• 300 watts Peak Each, 150 watts RMS Each
• Glossy red steel basket material
• Non-Pressed Paper cone material
• Impedance: 8 ohm
• Sensitivity: 90 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your 540i
46
List price $63.69
-13% $55.44

In stock.

• 300 watts Peak Each, 150 watts RMS Each
• Glossy red steel basket material
• Non-Pressed Paper cone material
• Impedance: 8 ohm
• Sensitivity: 90 dB

Deaf Bonce Avatar MTU 50LE

280W Peak (140W RMS) 5.2" Tsunami Series Midrange 4-ohm Car Speakers

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280W Peak (140W RMS) 5.2" Tsunami Series Midrange 4-ohm Car Speakers

• 140 watts Peak Each, 70 watts RMS Each
• Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

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Install kits available for most vehicles

found car based on your search
Fits multiple locations in your 540i
  • Front Door
  • Rear Deck Corner
$29.90 /pair

• 140 watts Peak Each, 70 watts RMS Each
• Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

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    FAQ for Speakers in 2001 540i

    Q: Can I upgrade or change the Speakers in 2001 BMW 540i?

    A: Yes this page includes all the best Speakers that work in your 540i.

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

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