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| 5/22/2021 | 141 Speedway - Maribel, WI 141 Championship Cup Race #6 Stock Cars, Sportsmans, Sport Compact, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car | Results | | Josh Koslowski (Stock Cars) | DNS | - | - | 17th |
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| 5/29/2021 | 141 Speedway - Maribel, WI Nathan Bouche Memorial / $1,000.00 to Win Stock Cars Triple Creek Series / 141 Championship Cup #7 Stock Cars, Sportsmans, Sport Compact, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car | Results | | Josh Koslowski (Stock Cars) | 10th | - | - | 19th |
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| 7/22/2021 | 141 Speedway - Maribel, WI King of the Creek IV $10,000.00 to Win IMCA Stock Cars Stock Cars, IMCA Northern SportMod, IMCA Stock Car | Results | | Josh Koslowski (Stock Cars) | 6th | - | - | 13th |
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| 8/14/2021 | 141 Speedway - Maribel, WI Mechanics Races / Triple Creek Series $1,000.00 to Win Stock Cars / CC #14 Stock Cars, Sportsmans, Sport Compact, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car | Results | | Josh Koslowski (Stock Cars) | 7th | - | - | 21st |
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| 8/19/2021 | 141 Speedway - Maribel, WI Captain of the Creek III $10,000.00 to Win IMCA Northern SportMods Stock Cars, IMCA Northern SportMod, IMCA Stock Car | Results | | Josh Koslowski (Stock Cars) | 8th | - | - | 12th |
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| 9/5/2021 | 141 Speedway - Maribel, WI Sunday Funday - IRA Bumper to Bumper Sprint Cars with Grand Nationals, Street Stocks and Legends 410 Sprints - Winged: IRA Interstate Racing Association Stock Cars, Sportsmans | Results | | Josh Koslowski (Stock Cars) | 8th (DNF) | - | - | 22nd |
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