BAKERSFIELD SPEEDWAY MUFFLER RULE
ATTENTION USAC/CRA SPRINT CAR RACERS! Bakersfield Speedway has a 95db at 100ft sound rule. Competitors must have a muffler that meets this rule or risk disqualification. Knoxville type can mufflers or cars with turndowns only will not meet the requirements. Cars must have a real muffler.
For those that do not know, there is a trailer park and houses directly behind the main grandstands.
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