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5/3/2025 | Shelby County Speedway - Harlan, IA R2C #2 presented by Pizza Ranch Hobby Stocks, Stock Cars, B Modifieds, Dirt Late Models, Sport Compact | Results | Brian Buboltz (Hobby Stocks) | 5th (DNF) | - | - | DNS |
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5/10/2025 | Shelby County Speedway - Harlan, IA R2C #3 Mother's Day Weekend Hobby Stocks, Stock Cars, B Modifieds, Dirt Late Models, Sport Compact, Outlaw Mini Mod | Results | Brian Buboltz (Hobby Stocks) | 5th | - | - | 13th |
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5/17/2025 | Shelby County Speedway - Harlan, IA R2C #4 presented by Cookies BBQ Hobby Stocks, Stock Cars, B Modifieds, Dirt Late Models, Vintage Full Body Stock Cars, Sport Compact | Results | Brian Buboltz (Hobby Stocks) | 1st | - | - | 22nd (DNF) |
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5/24/2025 | Shelby County Speedway - Harlan, IA R2C #5 Memorial Weekend Hobby Stocks, Stock Cars, B Modifieds, Dirt Late Models, Sport Compact, Outlaw Mini Mod | Results | Brian Buboltz (Hobby Stocks) | 4th | - | - | 1st |
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5/31/2025 | Shelby County Speedway - Harlan, IA Shelby County Speedway - w/ MSTS 360 Sprints - Winged: Malvern Bank 360 Sprints 410 Sprints - Winged, Hobby Stocks, Stock Cars, B Modifieds, Dirt Late Models, Sport Compact | Results | Brian Buboltz (Hobby Stocks) | 6th (DNF) | - | - | DNS |
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6/14/2025 | Shelby County Speedway - Harlan, IA R2C #8 Farmer Appreciation Night presented by Nutrien, Patriots Choice, and Arbor Bank. Hobby Stocks, Stock Cars, B Modifieds, Dirt Late Models, Sport Compact | Results | Brian Buboltz (Hobby Stocks) | 3rd | - | - | 7th |
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