Mufflers required April 15 at Valley Speedway
Mufflers will be required for the Casey's General Stores Thunder in the Valley event at the Valley Speedway in Grain Valley, Mo., on Friday night, April 15.
Muffler inserts must meet the diameter requirements of your header. The Schoenfeld short muffler (part #112535) and the Custom Craft 3-Ring Insert (part #1003/1005) are recommended.
The muffler must be secured in such a fashion that it does not come off during races.
For more information, contact Dennis Shrout at 816-229-2222.
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