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| 5/8/2021 | Wilmot Raceway - Wilmot, WI Lightning Sprints: IRA Lightning Sprints Non Wing Crate Sprints: Wisconsin wingLESS Sprints A Modifieds, Street Stocks, Hornets | Results | | Josh Rehberg (Lightning Sprints) | 5th | - | - | 8th |
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| 5/16/2021 | Wilmot Raceway - Wilmot, WI Lightning Sprints: IRA Lightning Sprints Non Wing Crate Sprints: Wisconsin wingLESS Sprints A Modifieds, Street Stocks, Dirt Late Models | Results | | Josh Rehberg (Lightning Sprints) | 2nd | - | - | 16th |
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| 5/30/2021 | 141 Speedway - Maribel, WI Sunday Funday With the IRA Bumper to Bumper Sprint Cars 410 Sprints - Winged: IRA Interstate Racing Association Lightning Sprints: IRA Lightning Sprints Non Wing Crate Sprints: Wisconsin wingLESS Sprints | Results | | Josh Rehberg (Lightning Sprints) | 6th | - | - | 12th |
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| 6/4/2021 | Wilmot Raceway - Wilmot, WI $6,000 to win 410 Sprints - Winged: IRA Interstate Racing Association with All Star Circuit of Champions Lightning Sprints: IRA Lightning Sprints Non Wing Crate Sprints: Wisconsin wingLESS Sprints | Results | | Josh Rehberg (Lightning Sprints) | 4th | - | - | 8th |
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| 6/12/2021 | Wilmot Raceway - Wilmot, WI 410 Sprints - Winged: IRA Interstate Racing Association Lightning Sprints: IRA Lightning Sprints Non Wing Crate Sprints: Wisconsin wingLESS Sprints A Modifieds | Results | | Josh Rehberg (Lightning Sprints) | 7th | - | - | 14th |
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| 6/19/2021 | Beaver Dam Raceway - Beaver Dam, WI 410 Sprints - Winged: World of Outlaws Lightning Sprints: IRA Lightning Sprints Semi-Pro Legends | Results | | Josh Rehberg (Lightning Sprints) | DNS | - | - | DNS |
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| 7/3/2021 | Sycamore Speedway - Sycamore, IL Lightning Sprints: IRA Lightning Sprints | Results | | Josh Rehberg (Lightning Sprints) | 4th | - | - | 6th |
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| 7/10/2021 | Wilmot Raceway - Wilmot, WI 410 Sprints - Winged: World of Outlaws Lightning Sprints: IRA Lightning Sprints Non Wing Crate Sprints: Wisconsin wingLESS Sprints | Results | | Josh Rehberg (Lightning Sprints) | 1st | - | - | 3rd |
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| 7/17/2021 | Wilmot Raceway - Wilmot, WI Lightning Sprints: IRA Lightning Sprints Non Wing Crate Sprints: Wisconsin wingLESS Sprints A Modifieds, Street Stocks | Results | | Josh Rehberg (Lightning Sprints) | 6th | - | - | 7th |
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| 7/31/2021 | Wilmot Raceway - Wilmot, WI Lightning Sprints: IRA Lightning Sprints Non Wing Crate Sprints: Wisconsin wingLESS Sprints A Modifieds, Hornets | Results | | Josh Rehberg (Lightning Sprints) | 4th | - | - | 15th |
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| 8/7/2021 | Wilmot Raceway - Wilmot, WI Founders Night 410 Sprints - Winged: IRA Interstate Racing Association Lightning Sprints: IRA Lightning Sprints Non Wing Crate Sprints: Wisconsin wingLESS Sprints A Modifieds | Results | | Josh Rehberg (Lightning Sprints) | 4th | - | - | 9th |
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