2021 GT4 America Series

The 2021 Pirelli GT4 America Series is the third season of the GT4 America Series. The season began on 5 March at Sonoma Raceway and ended on 17 October at Indianapolis Motor Speedway.

Calendar

The final calendar was announced on 3 October 2020, featuring seven rounds. The round at Canadian Tire Motorsports Park was later canceled. In June, Sebring International Raceway was announced as the CTMP round's replacement.

Round Circuit Date
1 Sonoma Raceway, Sonoma, California 5–7 March
2 Circuit of the Americas, Elroy, Texas 30 April-2 May
3 Virginia International Raceway, Alton, Virginia 4–6 June
4 Road America, Elkhart Lake, Wisconsin 27–29 August
5 Watkins Glen International, Watkins Glen, New York 17–19 September
6 Sebring International Raceway, Sebring, Florida 1–3 October
7 Indianapolis Motor Speedway, Speedway, Indiana 15–17 October
Cancelled due to the COVID-19 pandemic
Circuit Original Date
Canadian Tire Motorsports Park, Bowmanville, Ontario 21–23 May

Entry list

Team Car No. Drivers Class Rounds
Notlad Racing by RS1 Aston Martin Vantage AMR GT4 00 Matt Dalton PA 1–3
Patrick Gallagher
RS1 Porsche 718 Cayman GT4 Clubsport 37 Charlie Belluardo PA 5
Trent Hindman
Automatic Racing Aston Martin Vantage AMR GT4 09 Paul Kiebler Am 4–7
Mikel Miller
Dexter Racing Aston Martin Vantage AMR GT4 062 Ryan Dexter S All
Warren Dexter
GMG Racing Aston Martin Vantage AMR GT4 2 Jason Bell PA All
Andrew Davis
Audi R8 LMS GT4 Evo 8 Andy Lee PA 1–2, 6
Elias Sabo
Motorsport USA McLaren 570S GT4 5 Michael McAleenan Am 1–2, 4–5
Jerold Lowe 1
Dan Rogers 2, 4–5
23 Cavan O'Keefe Am 1–2, 4
Memo Gidley 1
Jason Alexandridis 4
Jerold Lowe 2
111 Todd Clarke Am 1–2, 4–5
Ty Clarke
Nolasport with OGH Porsche 718 Cayman GT4 Clubsport 7 Sean Gibbons Am All
Sam Owen
Nolasport 46 Russell Walker Am 1–6
Patrick Byrne 1
David Walker 2–6
47 Jason Hart PA All
Matt Travis
48 Dominic Starkweather Am 4–5
Anthony Geraci 4
Jason Alexandridis 5
Classic BMW BMW M4 GT4 11 Toby Grahovec S 2–7
Stevan McAleer
BSport Racing Aston Martin Vantage AMR GT4 15 Kenton Koch PA All
Bryan Putt
Capstone Motorsports Mercedes-AMG GT4 16 Kris Wilson Am All
John Allen 1–5, 7
Jon Berry 6
The Racer's Group Porsche 718 Cayman GT4 Clubsport 17 James Rappaport Am 1–4, 7
Robert Orcutt 1
Todd Hetherington 2–4, 7
66 Derek DeBoer PA 1–5, 7
Spencer Pumpelly
TGR Forbush Performance Toyota GR Supra GT4 18 Matt Forbush Am All
Damon Surzyshyn
CCR Racing / Team TFB BMW M4 GT4 22 Tim Barber S All
Cole Ciraulo
Heart of Racing Team Aston Martin Vantage AMR GT4 24 Ian James PA All
Gray Newell
ST Racing BMW M4 GT4 28 Ryan Eversley PA 1–2
Joe Rubbo 1–2
Harry Gottsacker S 4
Tyler Maxson 4
38 Bryson Lew S 1, 4
Tomas Mejia 1–4
Nick Wittmer 2–3
Rearden Racing Audi R8 LMS GT4 Evo 29 Dmitri Novikov PA 2
Owen Trinkler
888 Kris McCoy PA 1
Jeff Westphal 1
S 2
Vesko Kozarov 2
Bimmerworld Racing BMW M4 GT4 34 Bill Auberlen PA All
James Walker
36 James Clay PA All
Nick Galante
94 Chandler Hull S 1–5, 7
Jon Miller
Conquest Racing West Mercedes-AMG GT4 35 Michai Stephens S 4–7
Collin Mullan
RENNtech Motorsports Mercedes-AMG GT4 39 Chris Cagnazzi PA 2–4, 6–7
Guy Cosmo
79 Christopher Gumprecht PA 4–7
Kyle Marcelli
89 Ross Chouest PA 1–4
Aaron Povoledo
PF Racing Ford Mustang GT4 40 Chad McCumbee S 4
James Pesek
Murillo Racing Porsche 718 Cayman GT4 Clubsport 43 Aurora Straus Am 1–2
Christina Nielsen 1
Jeff Mosing 2
Mercedes-AMG GT4 72 Kenny Murillo S All
Christian Szymczak
3R Povoledo Racing Aston Martin Vantage AMR GT4 50 Ross Chouest PA 5–6
Aaron Povoledo
AutoTechnic Racing BMW M4 GT4 52 John Capestro-Dubets PA 2–7
Tom Capizzi
Black Swan Racing Porsche Cayman GT4 Clubsport MR 54 Jeroen Bleekemolen PA 1–4, 6
Tim Pappas
WR Racing Aston Martin Vantage AMR GT4 59 Paul Terry PA All
Brandon Davis 1–4
Owen Trinkler 5–6
Valentin Hasse-Clot 7
TGR Smooge Racing Toyota GR Supra GT4 68 Kevin Conway Am All
John Geesbreght
Marco Polo Motorsports KTM X-Bow GT4 Evo 71 Nicolai Elghanayan S 1–3
Mads Siljehaug
Random Vandals Racing BMW M4 GT4 98 Paul Sparta Am All
Al Carter 1–2, 4–7
Andrew Wikstrom 3
Stephen Cameron Racing BMW M4 GT4 119 Sean Quinlan PA All
Gregory Liefooghe 1–6
Tom Dyer 7
Porsche 718 Cayman GT4 Clubsport 619 Alain Stad Am 4–6
Thomas Merrill 4–5
Robb Todd 6
Premier Racing Porsche 718 Cayman GT4 Clubsport 120 Adam Adelson PA 4–6
Elliot Skeer
RHC Jorgensen / Strom BMW M4 GT4 450 Daren Jorgensen PA 1–2
Brett Strom
Zelus Motorsports Aston Martin Vantage AMR GT4 888 Jason Harward Am 7
Tigh Isaac
Sean Whalen
CarBahn Motorsports with Peregrine Racing Audi R8 LMS GT4 Evo 930 Tom Dyer PA 2–6
Mark Siegel 2, 4
Tyler McQuarrie 3
Sameer Gandhi 5–6
Icon Class
S Silver Cup
PA Pro-Am Cup
Am Am Cup

Footnotes

  1. ^ At Indianapolis, Harward and Isaac competed in Race #1, while Whalen and Isaac competed in Race #2

Race results

Bold indicates overall winner.

Round Circuit Pole position Silver Winners Pro-Am Winners Am Winners
1 R1 Sonoma No. 47 Nolasport No. 062 Dexter Racing No. 47 Nolasport No. 46 Nolasport
Jason Hart
Matt Travis 		Ryan Dexter
Warren Dexter 		Jason Hart
Matt Travis 		Patrick Byrne
Russell Walker
R2 No. 47 Nolasport No. 72 Murillo Racing No. 47 Nolasport No. 68 TGR Smooge Racing
Jason Hart
Matt Travis 		Kenny Murillo
Christian Szymczak 		Jason Hart
Matt Travis 		Kevin Conway
John Geesbreght
2 R1 Austin No. 47 Nolasport No. 94 Bimmerworld Racing No. 47 Nolasport No. 68 TGR Smooge Racing
Jason Hart
Matt Travis 		Chandler Hull
Jon Miller 		Jason Hart
Matt Travis 		Kevin Conway
John Geesbreght
R2 No. 47 Nolasport No. 72 Murillo Racing No. 47 Nolasport No. 7 Nolasport with OGH
Jason Hart
Matt Travis 		Kenny Murillo
Christian Szymczak 		Jason Hart
Matt Travis 		Sean Gibbons
Sam Owen
3 R1 Virginia No. 47 Nolasport No. 72 Murillo Racing No. 47 Nolasport No. 68 TGR Smooge Racing
Jason Hart
Matt Travis 		Kenny Murillo
Christian Szymczak 		Jason Hart
Matt Travis 		Kevin Conway
John Geesbreght
R2 No. 00 Notlad Racing by RS1 No. 11 Classic BMW No. 15 BSport Racing No. 16 Capstone Motorsports
Matt Dalton
Patrick Gallagher 		Toby Grahovec
Stevan McAleer 		Kenton Koch
Bryan Putt 		John Allen
Kris Wilson
4 R1 Road America No. 11 Classic BMW No. 72 Murillo Racing No. 34 Bimmerworld Racing No. 68 TGR Smooge Racing
Toby Grahovec
Stevan McAleer 		Kenny Murillo
Christian Szymczak 		Bill Auberlen
James Walker 		Kevin Conway
John Geesbreght
R2 No. 119 Stephen Cameron Racing No. 28 ST Racing No. 119 Stephen Cameron Racing No. 111 Motorsports USA
Gregory Liefooghe
Sean Quinlan 		Harry Gottsacker
Tyler Maxson 		Gregory Liefooghe
Sean Quinlan 		Todd Clarke
Ty Clarke
5 R1 Watkins Glen No. 16 Capstone Motorsports No. 72 Murillo Racing No. 52 AutoTechnic Racing No. 68 TGR Smooge Racing
John Allen
Kris Wilson 		Kenny Murillo
Christian Szymczak 		John Capestro-Dubets
Tom Capizzi 		Kevin Conway
John Geesbreght
R2 No. 66 The Racer's Group No. 11 Classic BMW No. 24 Heart of Racing Team No. 68 TGR Smooge Racing
Derek DeBoer
Spencer Pumpelly 		Toby Grahovec
Stevan McAleer 		Ian James
Gray Newell 		Kevin Conway
John Geesbreght
6 R1 Sebring No. 11 Classic BMW No. 35 Conquest Racing West No. 47 Nolasport No. 98 Random Vandals Racing
Toby Grahovec
Stevan McAleer 		Colin Mullan
Michai Stephens 		Jason Hart
Matt Travis 		Al Carter
Paul Sparta
R2 No. 34 Bimmerworld Racing No. 35 Conquest Racing West No. 47 Nolasport No. 68 TGR Smooge Racing
Bill Auberlen
James Walker 		Colin Mullan
Michai Stephens 		Jason Hart
Matt Travis 		Kevin Conway
John Geesbreght
7 R1 Indianapolis No. 11 Classic BMW No. 35 Conquest Racing West No. 47 Nolasport No. 68 TGR Smooge Racing
Toby Grahovec
Stevan McAleer 		Colin Mullan
Michai Stephens 		Jason Hart
Matt Travis 		Kevin Conway
John Geesbreght
R2 No. 59 WR Racing No. 35 Conquest Racing West No. 47 Nolasport No. 68 TGR Smooge Racing
Valentin Hasse-Clot
Paul Terry 		Colin Mullan
Michai Stephens 		Jason Hart
Matt Travis 		Kevin Conway
John Geesbreght

Championship standings

Scoring system

Championship points are awarded for the first ten positions in each race. Entries are required to complete 75% of the winning car's race distance in order to be classified and earn points. Individual drivers are required to participate for a minimum of 25 minutes in order to earn championship points in any SprintX race.

Position  1st   2nd   3rd   4th   5th   6th   7th   8th   9th   10th 
Points 25 18 15 12 10 8 6 4 2 1

Driver's championships

Pos. Driver Team SON AUS VIR ELK WGL SEB IMS Points
Silver Cup
1 Kenny Murillo
Christian Szymczak 		Murillo Racing 3 2 Ret 2 1 Ret 5 11 2 9 4 6 2 2 243
2 Tim Barber
Cole Ciraulo 		CCR Racing / Team TFB 8 15 15 18 7 6 6 27 17 7 17 15 12 20 176
3 Colin Mullan
Michai Stephens 		Conquest Racing West 12 14 11 2 1 1 1 1 163
4 Stevan McAleer
Toby Grahovec 		Classic BMW 11 4 5 2 36 Ret 26 1 5 28 3 22 159
5 Ryan Dexter
Warren Dexter 		Dexter Racing 2 4 25 8 Ret DNS 18 26 12 8 8 20 23 4 154
6 Chandler Hull
Jon Miller 		Bimmerworld Racing 18 31 7 Ret 11 7 14 NC 25 11 7 5 122
7 Tomas Mejia ST Racing 27 18 17 12 17 10 22 18 74
8 Nicolai Elghanayan
Mads Siljehaug 		Marco Polo Motorsports 9 6 19 9 14 22 67
9 Nick Wittmer ST Racing 17 12 17 10 40
10 Bryson Lew ST Racing 27 18 22 18 34
11 Harry Gottsacker
Tyler Maxson 		ST Racing 34 7 29
12 Chad McCumbee
James Pesek 		PF Racing 11 17 27
13 Vesko Kozarov
Jeff Westphal 		Rearden Racing 9 22 24
Pro-Am Cup
1 Jason Hart
Matt Travis 		Nolasport 1 1 1 1 2 3 7 15 DNS 6 2 2 4 3 267
2 Kenton Koch
Bryan Putt 		BSport Racing 4 8 18 6 9 1 13 3 6 17 9 8 5 7 158
3 Sean Quinlan Stephen Cameron Racing 6 9 34 3 3 23 8 1 7 Ret 6 7 8 13 141
4 Tom Capizzi
John Capestro-Dubets 		AutoTechnic Racing 5 15 8 19 2 2 1 5 21 10 10 9 128
5 Gregory Liefooghe Stephen Cameron Racing 6 9 34 3 3 23 8 1 7 Ret 6 7 125
6 Bill Auberlen
James Walker 		Bimmerworld Racing 7 27 4 Ret 16 24 1 4 8 4 15 4 9 Ret 110
7 Paul Terry WR Racing 10 3 12 7 4 12 Ret Ret 4 Ret 16 13 6 23† 95
8 Jeroen Bleekemolen
Tim Pappas 		Black Swan Racing 11 7 2 21 Ret DNS 24 5 3 3 85
9 Derek DeBoer
Spencer Pumpelly 		The Racer's Group 19 5 10 14 6 4 4 20 10 27 17 12 75
10 James Clay
Nick Galante 		Bimmerworld Racing 25 12 13 Ret Ret 5 3 23 9 13 7 18 11 8 74
11 Jason Bell
Andrew Davis 		GMG Racing 12 11 6 Ret 13 8 9 12 13 12 13 9 13 10 71
12 Brandon Davis WR Racing 10 3 12 7 4 12 Ret Ret 65
13 Ian James
Gray Newell 		Heart of Racing Team 20 22 20 19 15 21 25 9 3 3 26 27 14 11 63
14 Ross Chouest
Aaron Povoledo 		RENNtech Motorsports 16 16 3 5 22 25 17 DNS 49
3R Povoledo Racing 5 20 14 DNS
15 Chris Cagnazzi
Guy Cosmo 		RENNtech Motorsports 36 Ret 10 17 10 DNS 11 12 15 14 26
16 Tom Dyer CarBahn Motorsports with Peregrine Racing 32 30 19 8 DNS 25 22 25 24
Stephen Cameron Racing 8 13
17 Adam Adelson
Elliot Skeer 		Premier Racing 21 16 14 28 12 5 17
18 Owen Trinkler Rearden Racing 24 29 15
WR Racing 4 Ret 16 13
18 Valentin Hasse-Clot WR Racing 6 23† 15
19 Charlie Belluardo
Trent Hindman 		RS1 Ret 10 10
19 Mark Siegel CarBahn Motorsports with Peregrine Racing 32 30 21 20 19 8 10
19 Christopher Gumprecht
Kyle Marcelli 		RENNtech Motorsports DNS 22 16 24 10 16 Ret 15 10
20 Ryan Eversley
Joe Rubbo 		ST Racing 24 25 35 10 8
20 Matt Dalton
Patrick Gallagher 		Notlad Racing by RS1 14 33 Ret 25 12 DNS 8
21 Kris McCoy
Jeff Westphal 		Rearden Racing 23 10 6
22 Andy Lee
Elias Sabo 		GMG Racing 29 26 16 26 25 11 3
23 Tyler McQuarrie CarBahn Motorsports with Peregrine Racing 21 20 2
Daren Jorgensen
Brett Strom 		RHC Jorgensen / Storm 30 32 28 28 0
Dmitri Novikov Rearden Racing 24 29 0
Sameer Gandhi CarBahn Motorsports with Peregrine Racing DNS 25 22 25 0
Am Cup
1 Kevin Conway
John Geesbreght 		TGR Smooge Racing 15 13 8 17 18 11 15 10 15 14 20 14 16 18 303
2 Kris Wilson Capstone Motorsports 13 14 14 Ret 20 9 30 19 Ret 15 19 26 22 18 168
3 Paul Sparta Random Vandals Racing 28 30 21 20 19 13 23 Ret 19 26 18 17 Ret 16 152
4 John Allen Capstone Motorsports 13 14 14 Ret 20 9 30 19 Ret 15 126
5 Russell Walker Nolasport 5 17 27 23 Ret 16 20 30 18 16 Ret 23 119
5 Al Carter Random Vandals Racing 28 30 21 20 23 Ret 19 26 18 17 Ret 16 119
6 Sean Gibbons
Sam Owen 		Nolasport with OGH 26 24 26 11 Ret 14 35 32 20 19 28 21 Ret Ret 95
7 Matt Forbush
Damon Surzyshyn 		TGR Forbush Performance 32 29 30 27 23 18 28 24 DNS DNS 23 24 20 19 80
8 David Walker Nolasport 27 23 Ret 16 20 30 18 16 Ret 23 79
9 Alain Stad Stephen Cameron Racing 16 13 21 18 27 19 78
10 Todd Clarke
Ty Clarke 		Motorsports USA 21 23 23 31 31 6 22 21 70
11 Michael McAleenan Motorsports USA 17 21 29 16 27 21 23 22 69
12 Thomas Merrill Stephen Cameron Racing 16 13 21 18 55
13 Paul Kiebler
Mikel Miller 		Automatic Racing 29 29 24 23 24 22 18 Ret 52
14 Jerold Lowe Motorsports USA 17 21 22 13 50
15 Dan Rogers Motorsports USA 29 16 27 21 23 22 49
16 Cavan O'Keefe Motorsports USA 22 20 22 13 33 31 48
17 James Rappaport The Racer's Group 31 28 33 Ret 24 15 32 28 21 21 46
18 Jon Berry Capstone Motorsports 19 26 22 18 42
18 Todd Hetherington The Racer's Group 33 Ret 24 15 32 28 21 21 42
19 Patrick Byrne Nolasport 5 17 40
20 Andrew Wikstrom Random Vandals Racing 19 13 33
21 Tigh Isaac Zelus Motorsports 19 17 30
22 Robb Todd Stephen Cameron Racing 27 19 23
23 Aurora Straus Murillo Racing Ret 19 31 24 19
24 Memo Gidley Motorsports USA 22 20 18
25 Anthony Geraci Nolasport 26 25 16
Dominic Starkweather 26 25 Ret DNS
26 Jason Harward Zelus Motorsports 19 15
26 Sean Whalen Zelus Motorsports 17 15
27 Christina Nielsen Murillo Racing Ret 19 12
28 Jeff Mosing Murillo Racing 31 24 7
29 Robert Orcutt The Racer's Group 31 28 4
Jason Alexandridis Motorsports USA 33 31 0
Nolasport Ret DNS
Pos. Driver Team SON AUS VIR ELK WGL SEB IMS Points
Key
Colour Result
Gold Race winner
Silver 2nd place
Bronze 3rd place
Green Points finish
Blue Non-points finish
Non-classified finish (NC)
Purple Did not finish (Ret)
Black Disqualified (DSQ)
Excluded (EX)
White Did not start (DNS)
Race cancelled (C)
Withdrew (WD)
Blank Did not participate

Bold – Pole
Italics – Fastest Lap

†: Post-event penalty. Car moved to back of class.

Team's championships

Pos. Team Manufacturer SON
 AUS
 VIR
 ELK
 WGL
 SEB
 IMS
 Points
Silver Cup
1 Murillo Racing Mercedes-AMG 3 2 Ret 2 1 Ret 5 11 136
2 CCR Racing / Team TFB BMW 8 15 15 18 7 6 6 27 106
3 ST Racing BMW 27 18 17 12 17 10 22 7 89
4 Dexter Racing Aston Martin 2 4 25 8 Ret DNS 18 26 82
5 Classic BMW BMW 11 4 5 2 36 Ret 80
6 Bimmerworld Racing BMW 18 31 7 Ret 11 7 14 NC 80
7 Marco Polo Motorsports KTM 9 6 19 9 14 22 67
8 PF Racing Ford 11 17 27
8 Conquest Racing West Mercedes-AMG 12 14 27
10 Rearden Racing Audi 9 22 24
Pro-Am Cup
1 Nolasport Porsche 1 1 1 1 2 3 7 15 155
2 Stephen Cameron Racing BMW 6 9 34 3 3 23 8 1 94
3 BSport Racing Aston Martin 4 8 18 6 9 1 13 3 94
4 Bimmerworld Racing BMW 7 12 4 Ret 16 5 1 4 75
5 The Racer's Group Porsche 19 5 10 14 6 4 4 20 70
6 WR Racing Aston Martin 10 3 12 7 4 12 Ret Ret 65
7 AutoTechnic Racing BMW 5 15 8 19 2 2 64
8 RENNtech Motorsports Mercedes-AMG 16 16 3 5 10 17 10 DNS 51
9 Black Swan Racing Porsche 11 7 2 21 Ret DNS 24 5 49
10 GMG Racing Aston Martin
Audi 		12 11 6 26 13 8 9 12 42
11 Heart of Racing Team Aston Martin 20 22 20 19 15 21 25 9 11
12 CarBahn with Peregrine Racing Audi 32 30 21 20 19 8 10
13 ST Racing BMW 24 25 35 10 8
14 Notlad Racing by RS1 Aston Martin 14 33 Ret 25 12 DNS 8
15 Rearden Racing Audi 23 10 24 29 6
16 Premier Racing Porsche 21 16 2
RHC Jorgensen / Strom BMW 30 32 28 28 0
Am Cup
1 TGR Smooge Racing Toyota 15 13 8 17 18 11 15 10 166
2 Nolasport Porsche 5 17 26 11 Ret 14 20 25 110
3 Capstone Motorsports Mercedes-AMG 13 14 14 Ret 20 9 30 19 110
4 Motorsport USA McLaren 17 20 22 13 27 6 87
5 Random Vandals Racing BMW 28 30 21 20 19 13 23 Ret 82
6 TGR Forbush Performance Toyota 32 29 30 27 23 18 28 24 64
7 The Racer's Group Porsche 31 28 33 Ret 24 15 32 28 48
8 Stephen Cameron Racing Porsche 16 13 33
9 Murillo Racing Porsche Ret 19 31 24 28
10 Automatic Racing Aston Martin 29 29 10
Pos. Team Manufacturer SON
 AUS
 VIR
 ELK
 WGL
 SEB
 IMS
 Points

See also

References

  1. ^ "A Return to the Roots of GT Sprint Racing in North America, SRO America Announces GT America for 2021". gt4-america.com. SRO Motorsports Group America. 3 October 2020. Retrieved 1 March 2021.
  2. ^ "SRO America Cancels CTMP Round for Second Straight Year". sportscar365.com. 2 March 2021. Retrieved 6 March 2021.
  3. ^ "Sebring Confirmed as CTMP Replacement". sportscar365.com. June 7, 2021. Retrieved June 7, 2021.
  4. ^ a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac ad ae af ag ah ai aj ak al am an ao ap aq ar as at au av aw ax ay az ba bb bc Lloyd, Daniel (26 February 2021). "Winward, Turner Listed in Pro Class for Sonoma Opener". sportscar365.com. John Dagys Media. Retrieved 26 February 2021.
  5. ^ a b c d e f g h "The Return to Historic Watkins Glen International Brings 33-Car GT4 Field". gt4-america.com. SRO Motorsports Group. 10 September 2021. Retrieved 10 September 2021.
  6. ^ a b c d e "GMG Set For Another Banner Year in SRO with Multi-Car Program". gt4-america.com. SRO Motorsports Group America. 26 January 2021. Retrieved 26 January 2021.
  7. ^ a b c d e f g h i j k "2021 Entry List - Circuit of the Americas - GT4 America". gt4-america.com. SRO Motorsports Group America. Retrieved 26 May 2021.
  8. ^ a b c "Forbush Performance Launches with the First Toyota GR Supra GT4 in Pirelli GT4 America". gt4-america.com. SRO Motorsports Group America. 11 January 2021. Retrieved 11 January 2021.
  9. ^ a b c d e "ST Racing Set to Compete in the Full Pirelli GT4 America Championship in 2021". gt4-america.com. SRO Motorsports Group America. 5 February 2021. Retrieved 5 February 2021.
  10. ^ a b c "Rearden Racing Enters Four GT Machines for COTA Doubleheader With Burton/Kovarov, Novikov/Trinkler, McCoy/Westphal Lineups". gt4-america.com. SRO Motorsports Group America. 28 April 2021. Retrieved 26 May 2021.
  11. ^ a b c d e f g "BimmerWorld Racing: 2021 SRO GT4 America Season Announcement". gt4-america.com. SRO Motorsports Group America. 25 February 2021. Retrieved 25 February 2021.
  12. ^ a b c "RENNtech Returns to Pro Racing with Chouest/Povoledo and the Westport #89 RENNtech Mercedes-AMG GT4". gt4-america.com. SRO Motorsports Group America. 25 February 2021. Retrieved 25 February 2021.
  13. ^ a b "Chris Cagnazzi, Guy Cosmo join RENNtech Motorsports in Mercedes-AMG GT4". gt4-america.com. SRO Motorsports Group America. 26 April 2021. Retrieved 30 April 2021.
  14. ^ a b c "Three Women, No Limits: Straus, Nielsen, Legge to Run Pirelli GT4 America With Murillo Racing in Richard Mille Porsche". gt4-america.com. SRO Motorsports Group America. 24 February 2021. Retrieved 24 February 2021.
  15. ^ a b c "AutoTechnic Racing Enters Pirelli GT4 America Competition". gt4-america.com. SRO Motorsports Group America. 19 April 2021. Retrieved 22 April 2021.
  16. ^ a b c "SMOOGE Racing Set To Campaign Full Season with Toyota GR Supra GT4 in Pirelli GT4 America". gt4-america.com. SRO Motorsports Group America. 5 February 2021. Retrieved 5 February 2021.
  17. ^ a b c Lloyd, Daniel (30 April 2021). "Marco Polo Commits to Full Season With KTM X-Bow GT4 Evo". sportscar365.com. John Dagys Media. Retrieved 30 April 2021.
  18. ^ a b c "Random Vandals Racing Joins SRO Pirelli GT4 America". gt4-america.com. SRO Motorsports Group America. 16 February 2021. Retrieved 16 February 2021.
  19. ^ a b c d e "Final Pirelli GT4 America Champions to be Crowned in Indianapolis". gt4-america.com. SRO Motorsports Group America. 8 October 2021. Retrieved 12 October 2021.