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| 5/12/2021 | Stuart Speedway - Stuart, IA Jake Durbin Memorial 600cc Modifieds, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact, IMCA Mod Lite | Results | | Troy Ihrke (600cc Modifieds) | 4th | - | - | 12th |
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| 5/31/2021 | Stuart Speedway - Stuart, IA Whole Hog 50 600cc Modifieds, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Troy Ihrke (600cc Modifieds) | 2nd | - | - | 1st |
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| 6/16/2021 | Stuart Speedway - Stuart, IA Dynamic Drivelines Dirt Duel 600cc Modifieds, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock | Results | | Troy Ihrke (600cc Modifieds) | 2nd | - | - | 21st (DNF) |
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| 6/17/2021 | Kossuth County Speedway - Algona, IA Outlaw Mini Mod & Weekly IMC Racing B Modifieds, Street Stocks, 600cc Modifieds, Enduro, IMCA Modified, IMCA Hobby Stock, IMCA Sport Compact | Results | | Troy Ihrke (600cc Modifieds) | 1st | - | - | 17th (DNF) |
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| 6/18/2021 | Marshalltown Speedway - Marshalltown, IA RBF Electric $400.00 to Win IMCA Hobby Stocks Dwarf, Dirt Pro Trucks, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, Sportsman Dwarf | Results | | Troy Ihrke (Sportsman Dwarf) | 5th | - | - | DNS |
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| 6/19/2021 | Boone Speedway - Boone, IA Saturday Night Series Weekly #10 Dwarf, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Mod Lite | Results | | Troy Ihrke (Dwarf) | 1st | - | - | 20th (DNF) |
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| 7/1/2021 | Stuart Speedway - Stuart, IA Ron Little Memorial IMCA Modified: Midwest Madness Tour 600cc Modifieds, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Troy Ihrke (600cc Modifieds) | 3rd | - | - | 10th (DNF) |
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| 7/11/2021 | Mason City Motor Speedway - Mason City, IA Joel Showalter Memorial Presented by Window World 600cc Modifieds, USRA B-Mods, USRA Modifieds, USRA Hobby Stocks, USRA Stock Cars | Results | | Troy Ihrke (600cc Modifieds) | 4th | - | - | 6th |
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| 7/17/2021 | Cedar Lake Speedway - New Richmond, WI CLS Dash #10 / Pro Stock $5,000 To Win 360 Sprints - Non-Winged: UMSS - Traditional Sprint Car Series 305 Sprints - Non-Winged, 600cc Modifieds, Super Stocks, USRA Late Models | Results | | Troy Ihrke (600cc Modifieds) | 9th | - | - | 7th |
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| 7/18/2021 | Mason City Motor Speedway - Mason City, IA United States Modified Touring Series fueled by Casey's A Modifieds: USMTS - United States Modified Touring Series 600cc Modifieds, USRA B-Mods, USRA Modifieds, USRA Hobby Stocks, USRA Stock Cars | Results | | Troy Ihrke (600cc Modifieds) | 3rd | - | - | 4th |
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| 8/8/2021 | Mason City Motor Speedway - Mason City, IA Ted Zieman Memorial (Fair Races) Presented by Pabst Blue Ribbon 600cc Modifieds, USRA B-Mods, USRA Modifieds, USRA Hobby Stocks, USRA Stock Cars | Results | | Troy Ihrke (600cc Modifieds) | 1st | - | - | 2nd |
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| 8/15/2021 | Mason City Motor Speedway - Mason City, IA B-Mod Challenge Presented by Kabrick Distributing 600cc Modifieds, USRA B-Mods, USRA Modifieds, USRA Hobby Stocks, USRA Stock Cars | Results | | Troy Ihrke (600cc Modifieds) | 3rd | - | - | 12th (DNF) |
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| 8/22/2021 | Mason City Motor Speedway - Mason City, IA Driver Appreciation Night 600cc Modifieds, USRA B-Mods, USRA Modifieds, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners | Results | | Troy Ihrke (600cc Modifieds) | 6th (DNF) | - | - | 4th |
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| 10/1/2021 | Cedar County Raceway - Tipton, IA Hoker Trucking Darkside Fall Bash 600cc Modifieds, IMCA Modified, IMCA Northern SportMod, IMCA Stock Car, IMCA Hobby Stock, IMCA Sport Compact | Results | | Troy Ihrke (600cc Modifieds) | 6th | - | DNS | - |
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| 10/16/2021 | Mason City Motor Speedway - Mason City, IA Five Star Classic 600cc Modifieds, USRA B-Mods, USRA Modifieds, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners | Results | | Troy Ihrke (600cc Modifieds) | 1st | - | - | 16th (DNF) |
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| 10/17/2021 | Mason City Motor Speedway - Mason City, IA Five Star Classic 600cc Modifieds, USRA B-Mods, USRA Modifieds, USRA Hobby Stocks, USRA Stock Cars, USRA Tuners | Results | | Troy Ihrke (600cc Modifieds) | 3rd | - | - | 2nd |
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