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USAC WESTERN STATES MIDGETS - PETALUMA SPEEDWAY – JULY 16th
NOTICE TO RACERS: The USAC Western States Midget Series approved/legal mufflers are:
B&B: FRAC-0375-S w/side outlet,
Coast Fabrication: 300x625x17-2s, 350x625x17-2s, 400x625x17-2s
Extreme: 3512-3030 (with insert 2312-30), 3512-3030 SS (with insert 2312-30), 4615-3035- 15" long x 6" diameter x 3" inlet and 3.5 outlet w/internal cone
Flowmaster: (BCRA Approved) 13009130, 1509130, 13509135
Shoenfeld: 14272735-78, 14272535
Also, tarps are mandatory at Petaluma under all race cars in the pit area. The tarps must stick out at least one foot on each side.
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