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Why SinisterSound Audio Systems?

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SinisterSound gives you the best aftermarket motorcycle audio system upgrade solution for your Harley Davidson motorcycle. The SinisterSound promise is not the empty hype you find from others in the sound design market.  We have meticulously performed many years of research and development. We test our speaker system designs in the environments they will be used; on motorcycles at typical road speeds with normal ambient noise. Our systems are designed and built for motorcycles, not cages. Our fairing speakers & amp system alone is a major upgrade and will be heard, loud and clear, even at highway speeds. Your music will sound full, dynamic and crystal clear at high volume. Our speaker design with bass reflex technology produces up to twice the mid-bass when compared to other systems. We simply provide our customers with top quality, friendly support and Crystal Clear Sound You Can Feel.
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Simple use of factory locations

Others may want to remove gauges and add additional speakers to your motorcycle. If that is your wish, fine, but you don't have to with
Sinister Sound.



Installation and radio flash service available

Sinister Sound does installation in house.



We design and test our own products

Our parts are designed, then tested on our bikes before sold to the customer. The Sinister Sound team designs and manufactures many parts at our facility.

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HARLEY-DAVIDSON, ROAD GLIDE, STREET GLIDE, ELECTRA GLIDE, ULTRA CLASSIC ARE REGISTERED TRADEMARKS OF THE HARLEY-DAVIDSON MOTOR COMPANY, INC., MILWAUKEE, WI, U.S.A.  HARLEY-DAVIDSON® MOTORCYCLE MODEL DESIGNATIONS ARE UTILIZED FOR REFERENCE ONLY

ARC Audio and the ARC Audio logo are registered trademarks, service marks, and/or trade names owned by ARC Audio, Inc.