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| 5/7/2021 | Tri City Speedway - Granite City, IL Fast Friday Racing UMP LM, UMP Mods Twin 20's(2 Complete Features), BMods, 4-Cyl & Kids Power Wheels DIRTcar Late Models, DIRTcar UMP Modifieds, DIRTcar Sport Compact, B Modifieds | Results | | Shaun Horstmann (DIRTcar UMP Modifieds) | 3rd | - | - | 10th |
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| 5/14/2021 | Tri City Speedway - Granite City, IL Fast Friday Racing UMP Mods, BMods (Double Features $500/$75), UMP St Stk, & UMP 4-Cyl (No LM) DIRTcar UMP Modifieds, DIRTcar Sport Compact, B Modifieds, Street Stocks | Results | | Shaun Horstmann (DIRTcar UMP Modifieds) | 2nd | - | - | 8th |
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| 5/21/2021 | Tri City Speedway - Granite City, IL 360 Sprints - Winged: ASCS National with ASCS Warrior Region DIRTcar UMP Modifieds, B Modifieds | Results | | Shaun Horstmann (DIRTcar UMP Modifieds) | 3rd | - | - | 4th |
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| 5/25/2021 | Tri City Speedway - Granite City, IL Castrol FloRacing Late Model Night in America $10,000 with UMP Mods $1,500 Dirt Super Late Models: Castrol FloRacing Night in America DIRTcar Late Models, DIRTcar UMP Modifieds | Results | | Shaun Horstmann (DIRTcar UMP Modifieds) | 8th | - | - | 15th |
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| 6/4/2021 | Tri City Speedway - Granite City, IL "4-Cyl Takeover" LM, Mods, BMods, St Stk, Wing Micros $500, 4-cyl $1000,$800,$600 + Kids Power Wheel DIRTcar Late Models, DIRTcar UMP Modifieds, DIRTcar Sport Compact, Winged Outlaw, B Modifieds, Street Stocks | Results | | Shaun Horstmann (DIRTcar UMP Modifieds) | 3rd | - | - | 9th |
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| 6/11/2021 | Tri City Speedway - Granite City, IL Fast Friday Racing UMP LM, UMP Mods, BMods, UMP St Stk, & UMP 4-Cyl DIRTcar Late Models, DIRTcar UMP Modifieds, DIRTcar Sport Compact, B Modifieds, Street Stocks | Results | | Shaun Horstmann (DIRTcar UMP Modifieds) | 6th | - | - | 18th |
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| 6/18/2021 | Tri City Speedway - Granite City, IL UMP Summer Nationals UMP LM $10,000 with Summit Mods $1,500 & BMods $1,000 DIRTcar Late Models: DIRTcar Summer Nationals DIRTcar UMP Modifieds: DIRTcar Modified Nationals B Modifieds | Results | | Shaun Horstmann (DIRTcar UMP Modifieds) | 6th | - | 1st | 22nd |
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| 7/23/2021 | Tri City Speedway - Granite City, IL "Russ Wallace Memorial" Summer Nationals Race #2 UMP LM $10,000,UMP Mod $1,500 & BMods $1,000 DIRTcar Late Models: DIRTcar Summer Nationals DIRTcar UMP Modifieds: DIRTcar Modified Nationals B Modifieds | Results | | Shaun Horstmann (DIRTcar UMP Modifieds) | 6th | - | 3rd | - |
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| 8/7/2021 | Macon Speedway - Macon, IL Diane Bennett Memorial DIRTcar UMP Modifieds, Winged Outlaw, Winged A-Class, B Modifieds, Street Stocks, Hornets, Pro Late Model | Results | | Shaun Horstmann (DIRTcar UMP Modifieds) | 3rd | - | - | 20th (DNF) |
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| 9/5/2021 | Brownstown Bullring - Brownstown, IL $5000 to win $250 to start DIRTcar UMP Modifieds: Summit American Modified Series | Results | | Shaun Horstmann (DIRTcar UMP Modifieds) | 6th | - | 2nd | 15th |
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| 12/2/2021 | The Dome at America's Center - St. Louis, MO Castrol Gateway Dirt Nationals Midgets, Dirt Super Late Models, A Modifieds | Results | | Shaun Horstmann (A Modifieds) | 8th | - | 8th | - |
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| 12/4/2021 | The Dome at America's Center - St. Louis, MO Midgets, Dirt Super Late Models, A Modifieds | Results | | Shaun Horstmann (A Modifieds) | - | - | 5th | - |
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