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All competitors must run quiet mufflers at the Watsonville and Santa Maria events. Ocean Speedway has a strict muffler rule and asks competitors to run the Extreme Ventura Legal (4615-3535-8), FlowMaster Suitcase, Spintech Suitcase, or Extreme (6014-3530) and Spin Tech 180 degree mufflers. Santa Maria Speedway has a standard track rule (95dB at 100 feet), similar to those used at California Fairgrounds. Local track sound standards must be met in order to compete and failure to do so risks disqualification.
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