These are 4OHM Speaker's and are designed to be used on a "AFTERMARKET" Radio Only. 
They WILL NOT Sound correct using a stock Harley Radio.
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ALPINE SXE-1325S
5-1/4" (13cm) Coaxial 2-Way Speaker
GENERAL FEATURES:
Peak Power 200W
RMS Power 35W
Frequency Response: 70Hz-20kHz
Sensitivity: 92dB/W/m
Neodymium Magnet
Mylar-Titanium Balanced Dome Tweeter
Ferrite Magnet
Long Fibre Natural Pulp Cone
High Polymer Foam Edge
 
Upgrading the rear factory speakers in your Harley will give you a huge bump in sound quality, and Alpine designed SXE Series speakers to get your sound system rockin' without breaking the bank. You'll enjoy your music even more when you hear all the details that your muddy-sounding factory speakers couldn't begin to reproduce.
 
DESIGNED FOR USAGE WITH A AFTERMARKET RADIO ONLY