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| 6/6/2021 | Sheyenne Speedway - Lisbon, ND SPEEDFEST + A-MODS Pro Legends, Sport Compact, Pure Stock, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Street Stock | Results | | Randy Klein (A Modifieds) | 5th (DNF) | - | - | 8th | | Randy Klein (WISSOTA Modifieds) | 5th (DNF) | - | - | 8th |
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| 6/17/2021 | Cedar Lake Speedway - New Richmond, WI 22nd Annual Masters A Modifieds, Dirt Late Models, USRA Modifieds, USRA Late Models | Results | | Randy Klein (USRA Modifieds) | 6th | - | 12th | - |
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| 6/18/2021 | Cedar Lake Speedway - New Richmond, WI 22nd Annual Masters A Modifieds: USMTS - United States Modified Touring Series Dirt Late Models, USRA Late Models, WISSOTA Modifieds | Results | | Randy Klein (A Modifieds) | 9th | - | 15th | - |
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| 6/19/2021 | Cedar Lake Speedway - New Richmond, WI 22nd Annual Masters Limited Sprints - Winged: Upper Midwest Sprint Car Series A Modifieds: USMTS - United States Modified Touring Series Dirt Late Models, USRA Late Models, WISSOTA Modifieds | Results | | Randy Klein (A Modifieds) | 8th | - | 9th | - |
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| 7/14/2021 | Casino Speedway - Watertown, SD 11th Annual USMTS Summer Slam A Modifieds: USMTS - United States Modified Touring Series WISSOTA Midwest Mods, WISSOTA Street Stock | Results | | Randy Klein (A Modifieds) | 8th | - | 14th | - |
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| 7/15/2021 | Norman County Raceway - Ada, MN Thursday Night Thunder Hornets, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, WISSOTA Midwest Mods | Results | | Randy Klein (IMCA Stock Car) | 5th | - | - | 3rd |
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| 7/23/2021 | Red River Valley Speedway - West Fargo, ND Weekly Racing plus POWRI Minn-Kota Lightning Sprints Midgets: POWRi Lightning Sprints: POWRi Minn-Kota Lightning Sprints Semi-Pro Legends, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA RaceSaver Sprint Car | Results | | Randy Klein (IMCA Stock Car) | 4th | - | - | 7th |
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| 7/29/2021 | Norman County Raceway - Ada, MN Sanders Stock Car Challenge IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, WISSOTA Late Model | Results | | Randy Klein (IMCA Stock Car) | 3rd | - | - | 1st |
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| 7/30/2021 | Red River Valley Speedway - West Fargo, ND Sanders Stock Car Challenge Semi-Pro Legends, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA RaceSaver Sprint Car | Results | | Randy Klein (IMCA Stock Car) | 1st | - | - | 4th |
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| 8/12/2021 | Norman County Raceway - Ada, MN Thursday Night Thunder Midgets: POWRi Lightning Sprints: POWRi Minn-Kota Lightning Sprints IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, WISSOTA Midwest Mods | Results | | Randy Klein (IMCA Stock Car) | 2nd | - | - | 2nd |
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| 8/18/2021 | Red River Valley Speedway - West Fargo, ND Weekly Racing Semi-Pro Legends, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA RaceSaver Sprint Car | Results | | Randy Klein (IMCA Stock Car) | 1st | - | - | 2nd |
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| 8/19/2021 | Norman County Raceway - Ada, MN Season Championship for IMCA Sprints and INEX Legends Semi-Pro Legends, IMCA Northern SportMod, IMCA Stock Car, IMCA RaceSaver Sprint Car, WISSOTA Midwest Mods | Results | | Randy Klein (IMCA Stock Car) | 5th | - | - | 3rd |
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| 8/21/2021 | Jamestown Speedway - Jamestown, ND 3rd Annual Jeff Carpenter's Memorial Semi-Pro Legends, Pure Stock, IMCA Modified, WISSOTA Midwest Mods, WISSOTA Street Stock, Junior Slingshots | Results | | Randy Klein (WISSOTA Midwest Mods) | 4th | - | - | 13th |
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| 8/22/2021 | Sheyenne Speedway - Lisbon, ND $5,000 REBEL MW MOD TOUR FINALE Pro Legends, Sport Compact, Pure Stock, WISSOTA Midwest Mods, WISSOTA Street Stock | Results | | Randy Klein (WISSOTA Midwest Mods) | 2nd | - | - | 25th (DNF) |
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| 10/1/2021 | Dacotah Speedway - Mandan, ND Oktoberfest - Night 1 Hobby Stocks, Non-Winged Sprints, Semi-Pro Legends, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Sport Compact, WISSOTA Street Stock | Results | | Randy Klein (IMCA Stock Car) | 1st | 1st | - | - |
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| 10/2/2021 | Dacotah Speedway - Mandan, ND Oktoberfest - Night 2 Hobby Stocks, Non-Winged Sprints, Semi-Pro Legends, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Sport Compact, WISSOTA Street Stock | Results | | Randy Klein (IMCA Stock Car) | - | - | - | 1st |
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