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  • Specmo Auto Sound & Speed
    Specmo Auto Sound & Speed
    (810) 744-2940
    G3189 S Dort Hwy, 48529  Burton

    Hans G. Ritter founded our company in 1974. Hans was born, raised and educated in Germany. Upon moving to the U.S. he began working out of his home in Oak Park, Michigan repairing motorcycle and marine speedometers and gauges. His small business grew steadily and was later incorporated under the na…