The Straight Arrow Enduro Riders administer the latest rules and procedures for sound testing required by the AMA.  At each event sound testing meters are used to assure the total decibel level of each motorcycle does not exceed the mandated limits.  Riders must pass this test before being allowed to participate in an event.

Any member or guest riding at Grantsburg on non-race days must use a stock or quieter exhaust system (Club Rule 1.8).