World of Outlaws Sprint Car Series Muffler Rules

2024 World of Outlaws Sprint Car Series Muffler List
Date	Track Name	Location	Muffler Rule
February 7, 2024	Volusia Speedway Park	Barberville, Florida	No Mufflers Required
February 8, 2024	Volusia Speedway Park	Barberville, Florida	No Mufflers Required
February 9, 2024	Volusia Speedway Park	Barberville, Florida	No Mufflers Required
February 10, 2024	Volusia Speedway Park	Barberville, Florida	No Mufflers Required
March 3, 2024	Volusia Speedway Park	Barberville, Florida	No Mufflers Required
March 4, 2024	Volusia Speedway Park	Barberville, Florida	No Mufflers Required
March 8, 2024	Kennedale Speedway Park	Kennedale, Texas	Required: WoO Muffler Rule
March 9, 2024	Kennedale Speedway Park	Kennedale, Texas	Required: WoO Muffler Rule
March 15, 2024	Cotton Bowl Speedway	Paige, Texas	No Mufflers Required
March 16, 2024	Cotton Bowl Speedway	Paige, Texas	No Mufflers Required
March 22, 2024	Big O Speedway	Ennis, Texas	No Mufflers Required
March 23, 2024	Lawton Speedway	Lawton, Oklahoma	Required: WoO Muffler Rule
March 29, 2024	Thunderbird Speedway	Muskogee, Oklahoma	No Mufflers Required
March 30, 2024	81 Speedway	Wichita, Kansas	No Mufflers Required
April 5, 2024	US 36 Raceway	Osborn, Missouri	No Mufflers Required
April 6, 2024	Arrowhead Speedway	Colcord, Oklahoma	No Mufflers Required
April 12, 2024	Federated Auto Parts Raceway at I-55	Pevely, Missouri	No Mufflers Required
April 13, 2024	Federated Auto Parts Raceway at I-55	Pevely, Missouri	No Mufflers Required
April 19, 2024	Paducah International Raceway	Paducah, Kentucky	No Mufflers Required
April 20, 2024	Tri-State Speedway	Haubstadt, Indiana	No Mufflers Required
April 26, 2024	Knoxville Raceway	Knoxville, Iowa	Required: Must use Schoenfeld 14272735-78
April 27, 2024	Knoxville Raceway	Knoxville, Iowa	Required: Must use Schoenfeld 14272735-78
May 1, 2024	Jacksonville Speedway	Jacksonville, Illinois	No Mufflers Required
May 3, 2024	Eldora Speedway	Rossburg, Ohio	No Mufflers Required
May 4, 2024	Eldora Speedway	Rossburg, Ohio	No Mufflers Required
May 8, 2024	Lincoln Speedway	Abbottstown, Pennsylvania	No Mufflers Required
May 10, 2024	Williams Grove Speedway	Mechanicsburg, Pennsylvania	No Mufflers Required
May 11, 2024	Williams Grove Speedway	Mechanicsburg, Pennsylvania	No Mufflers Required
May 17, 2024	Attica Raceway Park	Attica, Ohio	Required: Must use Schoenfeld 14272735-78
May 18, 2024	Sharon Speedway	Hartford, Ohio	No Mufflers Required
May 24, 2024	Atomic Speedway	Chillicothe, Ohio	No Mufflers Required
May 25, 2024	Atomic Speedway	Chillicothe, Ohio	No Mufflers Required
May 27, 2024	Fremont Speedway	Fremont, Ohio	No Mufflers Required
May 31, 2024	Beaver Dam Raceway	Beaver Dam, Wisconsin	No Mufflers Required
June 1, 2024	Beaver Dam Raceway	Beaver Dam, Wisconsin	No Mufflers Required
June 7, 2024	River Cities Speedway	Grand Forks, North Dakota	No Mufflers Required
June 8, 2024	Ogilvie Raceway	Ogilvie, Minnesota	No Mufflers Required
June 14, 2024	Knoxville Raceway	Knoxville, Iowa	Required: Must use Schoenfeld 14272735-78
June 14, 2024	Knoxville Raceway	Knoxville, Iowa	Required: Must use Schoenfeld 14272735-78
June 19, 2024	Huset’s Speedway	Brandon, South Dakota	No Mufflers Required
June 20, 2024	Huset’s Speedway	Brandon, South Dakota	No Mufflers Required
June 21, 2024	Huset’s Speedway	Brandon, South Dakota	No Mufflers Required
June 22, 2024	Huset’s Speedway	Brandon, South Dakota	No Mufflers Required
June 28, 2024	Cedar Lake Speedway	New Richmond, Wisconsin	No Mufflers Required
June 29, 2024	Cedar Lake Speedway	New Richmond, Wisconsin	No Mufflers Required
July 12, 2024	Wilmot Raceway	Wilmot, Wisconsin	No Mufflers Required
July 13, 2024	Wilmot Raceway	Wilmot, Wisconsin	No Mufflers Required
July 16, 2024	Attica Raceway Park	Attica, Ohio	Required: Must use Schoenfeld 14272735-78
July 19, 2024	Eldora Speedway	Rossburg, Ohio	No Mufflers Required
July 20, 2024	Eldora Speedway	Rossburg, Ohio	No Mufflers Required
July 24, 2024	BAPS Motor Speedway	York Haven, Pennsylvania	No Mufflers Required
July 26, 2024	Williams Grove Speedway	Mechanicsburg, Pennsylvania	No Mufflers Required
July 27, 2024	Williams Grove Speedway	Mechanicsburg, Pennsylvania	No Mufflers Required
July 28, 2024	Weedsport Speedway	Weedsport, New York	No Mufflers Required
August 2, 2024	Federated Auto Parts Raceway at I-55	Pevely, Missouri	No Mufflers Required
August 3, 2024	Federated Auto Parts Raceway at I-55	Pevely, Missouri	No Mufflers Required
August 7, 2024	Knoxville Raceway	Knoxville, Iowa	Required: Must use Schoenfeld 14272735-78
August 8, 2024	Knoxville Raceway	Knoxville, Iowa	Required: Must use Schoenfeld 14272735-78
August 9, 2024	Knoxville Raceway	Knoxville, Iowa	Required: Must use Schoenfeld 14272735-78
August 10, 2024	Knoxville Raceway	Knoxville, Iowa	Required: Must use Schoenfeld 14272735-78
August 16, 2024	Jackson Motorplex	Jackson, Minnesota	No Mufflers Required
August 17, 2024	Jackson Motorplex	Jackson, Minnesota	No Mufflers Required
August 23, 2024	River Cities Speedway	Grand Forks, North Dakota	No Mufflers Required
August 24, 2024	Red River Valley Speedway	West Fargo, North Dakota	No Mufflers Required
August 31, 2024	Huset’s Speedway	Brandon, South Dakota	No Mufflers Required
September 1, 2024	Huset’s Speedway	Brandon, South Dakota	No Mufflers Required
September 6, 2024	Stockton Dirt Track	Stockton, California	Required: DBA Rule (Schoenfeld 14272735-78 is legal)
September 7, 2024	Kings Speedway	Hanford, California	Required: DBA Rule (Schoenfeld 14272735-78 is legal)
September 13, 2024	Bakersfield Speedway	Bakersfield, California	Required: DBA Rule (Schoenfeld 14272735-78 is legal)
September 14, 2024	Merced Speedway	Merced, California	Required: DBA Rule (Schoenfeld 14272735-78 is legal)
September 20, 2024	Thunderbowl Speedway	Tulare, California	Required: DBA Rule (Schoenfeld 14272735-78 is legal)
September 21, 2024	Thunderbowl Speedway	Tulare, California	Required: DBA Rule (Schoenfeld 14272735-78 is legal)
September 27, 2024	Wayne County Speedway	Orrville, Ohio	Required: WoO Muffler Rule
September 28, 2024	Sharon Speedway	Hartford, Ohio	No Mufflers Required
October 4, 2024	Williams Grove Speedway	Mechanicsburg, Pennsylvania	No Mufflers Required
October 5, 2024	Williams Grove Speedway	Mechanicsburg, Pennsylvania	No Mufflers Required
October 11, 2024	Selinsgrove Speedway	Selinsgrove, Pennsylvania	No Mufflers Required
October 12, 2024	Selinsgrove Speedway	Selinsgrove, Pennsylvania	No Mufflers Required
October 18, 2024	Dirt Oval 66	Joliet, Illinois	No Mufflers Required
October 19, 2024	Dirt Oval 66	Joliet, Illinois	No Mufflers Required
October 25, 2024	Riverside International Speedway	West Memphis, Arkansas	Required: WoO Muffler Rule
October 26, 2024	Riverside International Speedway	West Memphis, Arkansas	Required: WoO Muffler Rule
November 6, 2024	The Dirt Track at Charlotte	Concord, North Carolina	No Mufflers Required
November 7, 2024	The Dirt Track at Charlotte	Concord, North Carolina	No Mufflers Required
November 8, 2024	The Dirt Track at Charlotte	Concord, North Carolina	No Mufflers Required
November 9, 2024	The Dirt Track at Charlotte	Concord, North Carolina	No Mufflers Required