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| 4/23/2021 | Fayette County Speedway - West Union, IA Weekly Points Race 600cc Modifieds, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners | Results | | Clayton Harms (USRA Tuners) | 7th | - | - | 12th (DNF) |
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| 4/30/2021 | Fayette County Speedway - West Union, IA Weekly Points Race 600cc Modifieds, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners | Results | | Clayton Harms (USRA Tuners) | 4th | - | - | 11th |
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| 5/7/2021 | Fayette County Speedway - West Union, IA Weekly Points Race ~ Tuner Special 600cc Modifieds, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners | Results | | Clayton Harms (USRA Tuners) | 7th (DNF) | - | - | DNS |
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| 5/14/2021 | Fayette County Speedway - West Union, IA Weekly Points Race 600cc Modifieds, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners | Results | | Clayton Harms (USRA Tuners) | 6th | - | - | 8th |
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| 6/4/2021 | Fayette County Speedway - West Union, IA Weekly Points Race - Sponsored by Pioneer & United Beverage 600cc Modifieds, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners | Results | | Clayton Harms (USRA Tuners) | 5th | - | - | 9th |
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| 6/11/2021 | Fayette County Speedway - West Union, IA Weekly Points Race ~ Sponsored by Alpha Tap ~ $1000 to win BMods 600cc Modifieds, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners | Results | | Clayton Harms (USRA Tuners) | 5th | - | - | 12th (DNF) |
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| 6/18/2021 | Fayette County Speedway - West Union, IA Weekly Points Race 600cc Modifieds, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners | Results | | Clayton Harms (USRA Tuners) | 3rd | - | - | 9th |
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| 7/2/2021 | Fayette County Speedway - West Union, IA Weekly Points Race ~ Sponsored by The Place in Protivin ~ $100 extra to each feature winner 600cc Modifieds, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners | Results | | Clayton Harms (USRA Tuners) | 6th | - | - | 12th (DNF) |
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| 7/3/2021 | Winneshiek Raceway - Decorah, IA USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners, Mod Lites | Results | | Clayton Harms (USRA Tuners) | DNS | - | - | 9th |
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| 7/16/2021 | Fayette County Speedway - West Union, IA Weekly Points Race ~ Sponsored by KAR Auto & No Limit Diesel 600cc Modifieds, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners | Results | | Clayton Harms (USRA Tuners) | 4th | - | - | 5th |
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| 7/22/2021 | Fayette County Speedway - West Union, IA Fayette County Fair School Bus Races with USRA Tuners Generic 1, USRA Tuners | Results | | Clayton Harms (USRA Tuners) | 5th | - | - | 8th |
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| 7/23/2021 | Cresco Speedway - Cresco, IA Friday Night Races at Cresco Speedway 600cc Modifieds, USRA B-Mods, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners | Results | | Clayton Harms (USRA Tuners) | 5th | - | - | 7th (DNF) |
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