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World of Outlaws Sprint Cars – 2024 Muffler Requirements – January 25, 2024

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2024 World of Outlaws Sprints Muffler Requirements

 

Volusia Speedway Park Barberville, FL Mufflers not required
Kennedale Speedway Park Kennedale, TX Required: WoO Muffler Rule
Cotton Bowl Speedway Paige, TX Mufflers not required
Big O Speedway Ennis, TX Mufflers not required
Lawton Speedway Lawton, OK Required: WoO Muffler Rule
Thunderbird Speedway Muskogee, OK Mufflers not required
81 Speedway Park City, KS Mufflers not required
US 36 Osborn, MO Mufflers not required
Arrowhead Speedway Colcord, OK Mufflers not required
Federated Auto Parts Raceway at I-55 Pevely, MO Mufflers not required
Paducah International Raceway Paducah, KY Mufflers not required
Tri-State Speedway Haubstadt, IN Mufflers not required
Knoxville Raceway Knoxville, IA Required: must use Schoenfeld 14272735-78
Jacksonville Speedway Jacksonville, IA Mufflers not required
Eldora Speedway Rossburg, OH Mufflers not required
Lincoln Speedway Abbottstown, PA Mufflers not required
Williams Grove Speedway Mechanicsburg, PA Mufflers not required
Attica Raceway Park Attica, OH Required: must use Schoenfeld 14272735-78
Sharon Speedway Harford, OH Mufflers not required
Atomic Speedway Chillicothe, OH Mufflers not required
Fremont Speedway Fremont, OH Mufflers not required
Beaver Dam Raceway Beaver Dam, WI Mufflers not required
River Cities Speedway Grand Forks, ND Mufflers not required
Ogilvie Raceway Ogilvie, MN Mufflers not required
Knoxville Raceway Knoxville, IA Required: must use Schoenfeld 14272735-78
Huset’s Speedway Brandon, SD Mufflers not required
Cedar Lake Speedway New Richmond, WI Mufflers not required
Wilmot Raceway Wilmot, WI Mufflers not required
Attica Attica, OH Required: must use Schoenfeld 14272735-78
Eldora Speedway Rossburg, OH Mufflers not required
BAPS Motor Speedway York Haven, PA Mufflers not required
Williams Grove Speedway Mechanicsburg, PA Mufflers not required
Weedsport Speedway Weedsport, NY Mufflers not required
Federated Auto Parts Raceway at I-55 Pevely, MO Mufflers not required
Knoxville Raceway Knoxville, IA Required: must use Schoenfeld 14272735-78
Jackson Motorplex Jackson, MN Mufflers not required
River Cities Speedway Grand Forks, ND Mufflers not required
Red River Valley Speedway West Fargo, ND Mufflers not required
Huset’s Speedway Brandon, SD Mufflers not required
Stockton Dirt Track Stockton, CA Required:  DBA RULE  (Schoenfeld 14272735-78 is legal)
Kings Speedway Speedway Hanford, CA Required:  DBA RULE  (Schoenfeld 14272735-78 is legal)
Bakersfield Speedway Bakersfield, CA Required:  DBA RULE  (Schoenfeld 14272735-78 is legal)
Merced Speedway Merced, CA Required:  DBA RULE  (Schoenfeld 14272735-78 is legal)
Thunderbowl Raceway Tulare, CA Required:  DBA RULE  (Schoenfeld 14272735-78 is legal)
Wayne County Speedway Orrville, OH Required: WoO Muffler Rule
Sharon Speedway Harford, OH Mufflers not required
Williams Grove Speedway Mechanicsburg, PA Mufflers not required
Selinsgrove Speedway Selinsgrove, PA Mufflers not required
Dirt Oval 66 Joliet, IL Mufflers not required
Riverside International Speedway West Memphis, AR Required: WoO Muffler Rule
The Dirt Track at Charlotte Concord, NC Mufflers not required