Polk MM522
Polk MM522 is a well made speaker. Holds up well in rain. Has a nice sound. You will need to use the included Polk speaker covers. Polk MM series speaker use lightweight neodymium motors for increased output. Neodymium magnets are nice on a bike due to weight savings. For easier installation on 13 and older Ultra Glides you may want to consider the DB522 instead.
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