I have a Harley Police Bike Siren Speaker 91157-88A or Whelen model SA-350-NM. It is rated for 100 watts RMS. This is ONLY the speaker. It is NOT a Siren. Like any speaker, it will only play the signal put into it. It will play music if you hook it up to a radio. It has the mount for attaching to the front engine guard or crash bar. It looks like new and works just fine.
These retail for $400 I want $125. OBO with free US shipping available.