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Discussion Starter · #1 ·
Found this and wanted to clarify that it's ok for me to run a straight pipe (only a month):

Colorado
Motorcycles manufactured on or after July 1, 1971 and before January 1, 1973 may not exceed a noise level of 88 decibels measured at a distance of 50 feet from the center of the lane of travel.

Motorcycles manufactured on or after January 1, 1973 may not exceed a noise level of 86 decibels measured at a distance of 50 feet from the center of the lane of travel.

These noise restrictions are not applicable for vehicles designed exclusively for racing purposes.

resource: http://drivinglaws.aaa.com/laws/motorcycle-noise-limits/
 
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