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Sundown Audio ECX 6.5 (ECX6.5)

50W RMS 6.5" ECX Series 2 Way Coaxial Pro Audio 4-ohm Speaker (S-ECX6.5)

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50W RMS 6.5" ECX Series 2 Way Coaxial Pro Audio 4-ohm Speaker (S-ECX6.5)

• 50 watts RMS Each
• Horn Tweeters
• Impedance: 4 ohm
• Sensitivity: 94 dB

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Install kits available for most vehicles

found car based on your search
Fits the following location in your M6
  • Rear Deck Corner
List price $71.99
-17% $59.99

In stock

Only 3 Left!

Sundown Audio LCMR-6.5 (LCMR6.58)

100W RMS 6.5" LCMR Series Pro-Audio Midrange 8-ohm Speaker (S-LCMR6.58)

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100W RMS 6.5" LCMR Series Pro-Audio Midrange 8-ohm Speaker (S-LCMR6.58)

• 100 watts RMS Each
&bull Phase plug included
• Impedance: 8 ohm
• Sensitivity: 92 dB

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Install kits available for most vehicles

found car based on your search
Fits the following location in your M6
  • Rear Deck Corner
List price $71.99
-17% $59.99

In stock

Cerwin-Vega H652

540W Peak (180W RMS) 6.5" HED Series 2 Way Coaxial 4-ohm Speakers

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540W Peak (180W RMS) 6.5" HED Series 2 Way Coaxial 4-ohm Speakers

• 360 watts Peak Each, 120 watts RMS Each
• 1" PEI (Polyetherimide) Balanced Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

1+ offers available
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Install kits available for most vehicles

found car based on your search
Fits the following location in your M6
  • Rear Deck Corner
List price $119.99
-17% $99.99 /pair

In stock

Continue to cart

Available Offers (2) for Cerwin-Vega H652
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List price $119.99
-17% $99.99
$84.99 with coupon | Price details
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MB Quart DK2-116

240W Peak (120W RMS) 6.5" Discus Series 2-way 4-ohm Coaxial Car Speakers

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240W Peak (120W RMS) 6.5" Discus Series 2-way 4-ohm Coaxial Car Speakers

• 120 watts Peak Each, 60 watts RMS Each
• Aluminum Inverted Dome tweeters
• Lightweight Thermoformed Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

1+ offers available
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Install kits available for most vehicles

found car based on your search
Fits the following location in your M6
  • Rear Deck Corner
List price $89.99
-11% $79.99 /pair

In stock

Only 2 Left!

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Available Offers (2) for MB Quart DK2-116
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List price $89.99
-11% $79.99
$63.99 with coupon | Price details
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PRV Audio 6CX380-4 SLIM (Sold Individually)

760W Peak (380W RMS) 6.5" 2 Way Coaxial Pro Audio 4-ohm Shallow Car Speaker

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760W Peak (380W RMS) 6.5" 2 Way Coaxial Pro Audio 4-ohm Shallow Car Speaker

• 760 watts Peak, 380 watts RMS
• 1" Phenolic Horn 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 the following location in your M6
  • Rear Deck Corner
List price $87.39
-20% $69.91

In stock

Diamond Audio DES65C

240W Peak (120W RMS) 6.5" DES Series 2-way Component Speaker System

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240W Peak (120W RMS) 6.5" DES Series 2-way Component Speaker System

• 120 watts Peak Each, 60 watts RMS Each
• 1" Aluminum Dome tweeters
• Composite Foam Core Carbon Fiber cone material
• Sensitivity: 87 dB

1+ offers available
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Install kits available for most vehicles

found car based on your search
Fits the following location in your M6
  • Rear Deck Corner
$359.99 /set

In stock

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Available Offers (2) for Diamond Audio DES65C
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$359.99
$305.99 with coupon | Price details
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Limited time!

JBL Club 64CSQ (JBLSPKCB64CSQ)

570W Peak (190W RMS) 6.5" Club Series 2 Way 3-ohm Component Speaker System

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570W Peak (190W RMS) 6.5" Club Series 2 Way 3-ohm Component Speaker System

• 285 watts Peak Each, 95 watts RMS Each
• 3/4" Silk Edge Driven Dome tweeters
• Carbon Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

Free Baffles with Select Speakers Shop deal
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Install kits available for most vehicles

found car based on your search
Fits the following location in your M6
  • Rear Deck Corner
2
List price $299.95
-10% $269.95 /set

In stock

Limited time!

Massive Audio FC6X

300W Peak (150W RMS) 6.5" FC Series Coaxial 4-ohm Speakers

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300W Peak (150W RMS) 6.5" FC Series Coaxial 4-ohm Speakers

• 150 watts Peak Each, 75 watts RMS Each
• 13/16" Silk Dome Tweeters
• Fiber Paper cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

Free Speaker Accessory at Checkout!
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Install kits available for most vehicles

found car based on your search
Fits the following location in your M6
  • Rear Deck Corner
List price $234.99
-64% $84.99 /pair

In stock

Only 3 Left!

Limited time!

Diamond Audio MS652NEO4S

1200W Peak (400W RMS) 6.5" MS NEO Series 2-Way Pro Coaxial 4-ohm Powersports and Motorcycle Shallow Speakers

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1200W Peak (400W RMS) 6.5" MS NEO Series 2-Way Pro Coaxial 4-ohm Powersports and Motorcycle Shallow Speakers

• 600 watts Peak Each, 200 watts RMS Each
• Polyethylene-Naphthalate Horn Tweeters
• Waterproof DUPONT™ Kevlar 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 the following location in your M6
  • Rear Deck Corner
$849.99 /pair

In stock

Only 2 Left!

Limited time!

Massive Audio MA6E (Sold Individually)

120W Peak (50W RMS) 6.5" MA Series 2-way 8-ohm Mid-Range Speaker

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120W Peak (50W RMS) 6.5" MA Series 2-way 8-ohm Mid-Range Speaker

• 120 watts Peak Each, 100 watts RMS Each
• 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 the following location in your M6
  • Rear Deck Corner
$39.99

In stock

Massive Audio MX65SV2

200W Peak (100W RMS) 6.5" MX Series 2-Way Coaxial 4-ohm Shallow Car Speakers

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200W Peak (100W RMS) 6.5" MX Series 2-Way Coaxial 4-ohm Shallow Car Speakers

• 100 watts Peak Each, 50 watts RMS Each
• 1/2" PEI (Polyetherimide) Dome Tweeters
• Custom Laminated Paper cone material
• Impedance: 4 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 M6
  • Rear Deck Corner
List price $65.99
-20% $52.49 /pair

In stock

Only 2 Left!

Limited time!

Precision Power HTW.652

300W RMS 6.5" HTW Series 2 Way Coaxial 2-ohm Horn-Loaded Speakers

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300W RMS 6.5" HTW Series 2 Way Coaxial 2-ohm Horn-Loaded Speakers

• Peak Each, 150 watts RMS Each
• 1" Titanium Ring Radiator tweeters
• Poly-Coated Paper cone material
• Impedance: 2 ohm
• Sensitivity: 93 dB

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Install kits available for most vehicles

found car based on your search
Fits the following location in your M6
  • Rear Deck Corner
List price $699.00
-14% $599.00 /pair

In stock

Only 1 Left!

Diamond Audio MS652NEO4

1200W Peak (400W RMS) 6.5" MS NEO Series 2-Way Pro Coaxial 4-ohm Powersports and Motorcycle Speakers

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1200W Peak (400W RMS) 6.5" MS NEO Series 2-Way Pro Coaxial 4-ohm Powersports and Motorcycle Speakers

• 600 watts Peak Each, 200 watts RMS Each
• Polyethylene-Naphthalate Horn Tweeters
• Waterproof DUPONT™ Kevlar cone material
• Impedance: 4 ohm
• Sensitivity: 96 dB

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VIP Product Get $85.00 in rewards to spend later

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Install kits available for most vehicles

found car based on your search
Fits the following location in your M6
  • Rear Deck Corner
$849.99 /pair

In stock

Only 2 Left!

Limited time!

Diamond Audio MS652NEO2

1200W Peak (400W RMS) 6.5" MS NEO Series 2-Way Pro Coaxial 2-ohm Powersports and Motorcycle Speakers

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1200W Peak (400W RMS) 6.5" MS NEO Series 2-Way Pro Coaxial 2-ohm Powersports and Motorcycle Speakers

• 600 watts Peak Each, 200 watts RMS Each
• Polyethylene-Naphthalate Horn Tweeters
• Waterproof DUPONT™ Kevlar cone material
• Impedance: 2 ohm
• Sensitivity: 95 dB

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VIP Product Get $85.00 in rewards to spend later

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Install kits available for most vehicles

found car based on your search
Fits the following location in your M6
  • Rear Deck Corner
$849.99 /pair

In stock

Only 2 Left!

Orion HCCA64NDC

2800W Peak (700W RMS) 6.5" HCCA Series Pro Audio Midrange 4-ohm Speaker

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2800W Peak (700W RMS) 6.5" HCCA Series Pro Audio Midrange 4-ohm Speaker

• 1400 watts Peak Each, 350 watts RMS Each
• Non-Pressed 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 the following location in your M6
  • Rear Deck Corner
List price $263.99
-17% $219.95 /pair

In stock

Limited time!

JBL Club 64C (JBLSPKCB64C)

420W Peak (140W RMS) 6.5" Club Series 2 Way 3-ohm Component Speaker System

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420W Peak (140W RMS) 6.5" Club Series 2 Way 3-ohm Component Speaker System

• 210 watts Peak Each, 70 watts RMS Each
• Silk Edge Driven Dome tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 92 dB

Free Baffles with Select Speakers Shop deal
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VIP Product Get $20.00 in rewards to spend later

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Install kits available for most vehicles

found car based on your search
Fits the following location in your M6
  • Rear Deck Corner
List price $229.95
-13% $199.95 /set

In stock

Limited time!

Precision Power HTW.654

300W RMS 6.5" HTW Series 2 Way Coaxial 4-ohm Horn-Loaded Speakers

HTW.654 big
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300W RMS 6.5" HTW Series 2 Way Coaxial 4-ohm Horn-Loaded Speakers

• Peak Each, 150 watts RMS Each
• 1" Titanium Ring Radiator tweeters
• Poly-Coated Paper cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

Flash Sale! Save at Checkout!
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VIP Product Get $59.90 in rewards to spend later

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Install kits available for most vehicles

found car based on your search
Fits the following location in your M6
  • Rear Deck Corner
List price $699.00
-14% $599.00 /pair

In stock

Only 1 Left!

Limited time!

Massive Audio GT6SP

400W Peak (100W RMS) 6.5" GT Series 2 Way Coaxial 4-ohm Shallow Mount Speakers

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400W Peak (100W RMS) 6.5" GT Series 2 Way Coaxial 4-ohm Shallow Mount Speakers

• 200 watts Peak Each, 50 watts RMS Each
• Dome Tweeters
• Hardened Paper cone material
• Impedance: 4 ohm
• Sensitivity: 98 dB

Free Speaker Accessory at Checkout!
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Install kits available for most vehicles

found car based on your search
Fits the following location in your M6
  • Rear Deck Corner
$129.98 /pair

In stock

Limited time!

JBL STAGE3 GEN2 68 (STAGE368)

1120W Peak (140W RMS) 6.5" Stage3 Gen2 Series 2-Way Coaxial 4-ohm Car Speakers with Grilles

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1120W Peak (140W RMS) 6.5" Stage3 Gen2 Series 2-Way Coaxial 4-ohm Car Speakers with Grilles

• 560 watts Peak Each, 70 watts RMS Each
• PEI (Polyetherimide) Balanced Dome Tweeters
• Plus One Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

Free Speaker Accessory at Checkout!
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Install kits available for most vehicles

found car based on your search
Fits the following location in your M6
  • Rear Deck Corner
List price $119.95
-17% $99.95 /pair

In stock

Deaf Bonce Machete MFX-60

200W Peak (100W RMS) 6.5" Machete Series 2 Way Coaxial 4-ohm Speakers

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200W Peak (100W RMS) 6.5" Machete Series 2 Way Coaxial 4-ohm Speakers

• 100 watts Peak Each, 50 watts RMS Each
• Paper Fiber with Mica Coating 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 the following location in your M6
  • Rear Deck Corner
$49.90 /pair

In stock

Only 2 Left!

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    FAQ for Speakers in 1988 M6

    Q: Can I upgrade or change the Speakers in 1988 BMW M6?

    A: Yes this page includes all the best Speakers that work in your M6.

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

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