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| 4/17/2021 | Thunderbird Raceway - Muskegon, MI Dirt Super Late Models, Factory Stocks, Stock Cars, A Modifieds, Pro Late Model, Mini Wedge, Mini Outlaws, Sport Compact | Results | | MIke Harman (Factory Stocks) | 4th | - | - | 16th |
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| 4/30/2021 | Winston Speedway - Rothbury, MI Full Show DIRTcar Sport Compact, Sportsmans, Street Stocks, Dirt Late Models, Hornets, Mini Wedge, IMCA Modified | Results | | MIke Harman (Street Stocks) | 6th (DNF) | - | - | DNS |
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| 5/8/2021 | Thunderbird Raceway - Muskegon, MI Dirt Super Late Models, Factory Stocks, Stock Cars, A Modifieds, Pro Late Model, Mini Wedge, Mini Outlaws, Sport Compact | Results | | MIke Harman (Factory Stocks) | 2nd | - | - | 11th |
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| 5/22/2021 | Thunderbird Raceway - Muskegon, MI Allstar Performance Street Stock Challenge $750 to win & Full Show Dirt Super Late Models, Factory Stocks, Stock Cars, A Modifieds, Pro Late Model, Mini Wedge, Mini Outlaws, Sport Compact | Results | | MIke Harman (Factory Stocks) | 5th | - | 3rd | 14th |
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| 5/29/2021 | Thunderbird Raceway - Muskegon, MI Salute to Veterans $1000 to win IMCA Modfieds & Full Show Dirt Super Late Models, Factory Stocks, Stock Cars, A Modifieds, Pro Late Model, Mini Wedge, Mini Outlaws, Sport Compact | Results | | MIke Harman (Factory Stocks) | 3rd | - | - | 16th (DNF) |
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| 6/5/2021 | Thunderbird Raceway - Muskegon, MI Midwest Dirt $500 to Win & Full Show Sport Compact: Midwest Compact Touring Series Dirt Super Late Models, Factory Stocks, Stock Cars, A Modifieds, Pro Late Model, Mini Wedge, Mini Outlaws | Results | | MIke Harman (Factory Stocks) | 4th | - | - | - |
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| 6/12/2021 | Thunderbird Raceway - Muskegon, MI IMCA Modified Summer Series $1000 to win Presented by JJ Motorsports plus full show Dirt Super Late Models, Factory Stocks, Stock Cars, A Modifieds, Pro Late Model, Mini Wedge, Mini Outlaws, Sport Compact | Results | | MIke Harman (Factory Stocks) | 6th | - | - | 11th |
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| 6/23/2021 | Thunderbird Raceway - Muskegon, MI Eastern IMCA Allstars IMCA Modified: Eastern IMCA Allstars A Modifieds, Sport Compact, IMCA Stock Car, DIRTcar Pro Stock | Results | | MIke Harman (IMCA Stock Car) | - | - | - | - | | MIke Harman (DIRTcar Pro Stock) | 5th | - | - | DNS |
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| 7/3/2021 | Thunderbird Raceway - Muskegon, MI Lightning Sprints: Great Lakes Lightning Sprints Dirt Super Late Models, Factory Stocks, Stock Cars, A Modifieds, Pro Late Model, Mini Wedge, Mini Outlaws, Sport Compact | Results | | MIke Harman (Factory Stocks) | 4th | - | - | - |
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| 7/10/2021 | Thunderbird Raceway - Muskegon, MI $500 to win Warriors Presented by NIX's Trucking-$1000 to Win IMCA Modified Dirt Super Late Models, Factory Stocks, Stock Cars, A Modifieds, Pro Late Model, Mini Wedge, Mini Outlaws, Sport Compact | Results | | MIke Harman (Factory Stocks) | 7th | - | - | 12th |
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| 8/14/2021 | Thunderbird Raceway - Muskegon, MI 360 Sprints - Winged: GLSS-Great Lakes Super Sprints Factory Stocks, Stock Cars, A Modifieds, Pro Late Model, Mini Wedge, Mini Outlaws, Sport Compact | Results | | MIke Harman (Factory Stocks) | 4th | - | - | 11th |
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| 8/21/2021 | Thunderbird Raceway - Muskegon, MI IMCA Modified Summer Series $1000 to win-Warriors $300 to win Dirt Super Late Models, Factory Stocks, Stock Cars, A Modifieds, Pro Late Model, Mini Wedge, Mini Outlaws, Sport Compact | Results | | MIke Harman (Factory Stocks) | 1st | - | - | - |
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| 8/28/2021 | Thunderbird Raceway - Muskegon, MI Dirt Super Late Models, Factory Stocks, Stock Cars, A Modifieds, Pro Late Model, Mini Wedge, Mini Outlaws, Sport Compact | Results | | MIke Harman (Factory Stocks) | 5th | - | 9th | - |
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| 9/4/2021 | Thunderbird Raceway - Muskegon, MI Dirt Super Late Models, Factory Stocks, Stock Cars, A Modifieds, Pro Late Model, Mini Wedge, Mini Outlaws, Sport Compact | Results | | MIke Harman (Factory Stocks) | - | - | - | - |
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| 9/10/2021 | Thunderbird Raceway - Muskegon, MI Rolling Thunder Dirt Super Late Models, Factory Stocks, Stock Cars, A Modifieds, Enduro, Pro Late Model, Mini Wedge, Mini Outlaws, Sport Compact | Results | | MIke Harman (Factory Stocks) | 2nd | - | - | 20th (DNF) |
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