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  3. Discontinued Polk Audio Motorcycle & Harley-Davidson Audio
  4. Discontinued Polk Audio Harley-Davidson Audio Packages

Discontinued Polk Audio Harley-Davidson Audio Packages

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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.
Speaker Size (Rear)

Refers to the size of the speaker.

Every vehicle has standard application sizes. Please contact us for your vehicle's specific speaker sizes if you do not know them.

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Polk Audio Mobile Monitor 5.25" + 6"x9" Speakers Combo

MM521 5.25" 2-way Mobile Monitor Series Coaxial Speakers + MM691 6"x9" 3-Way Mobile Monitor MM Series Coaxial Speakers

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Polk Audio Mobile Monitor 5.25" + 6"x9" Speakers Combo

MM521 5.25" 2-way Mobile Monitor Series Coaxial Speakers + MM691 6"x9" 3-Way Mobile Monitor MM Series Coaxial Speakers

• Peak Power: 200W
• RMS Power: 90W
• 2-way Marine Certified Coaxial Speakers
• Woven glass composite cone woofer
• Butyl rubber surround for a smoother response
• 1" Silk/Polymer composite swivel tweeter
• Klippel optimized components for distortion-free sound

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55

• Peak Power: 200W
• RMS Power: 90W
• 2-way Marine Certified Coaxial Speakers
• Woven glass composite cone woofer
• Butyl rubber surround for a smoother response
• 1" Silk/Polymer composite swivel tweeter
• Klippel optimized components for distortion-free sound

 
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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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