2021 GT4 America Series

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

Calendar

The final calendar was announced on 3 October 2020, featuring seven rounds.^[1] The round at Canadian Tire Motorsports Park was later canceled.^[2] In June, Sebring International Raceway was announced as the CTMP round's replacement.^[3]

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	11–13 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^[4]	Aston Martin Vantage AMR GT4	00	Matt Dalton^[4]	PA	1–3
Notlad Racing by RS1^[4]	Aston Martin Vantage AMR GT4	00	Patrick Gallagher^[4]	PA	1–3
Automatic Racing	Aston Martin Vantage AMR GT4	09	Paul Kiebler	Am	4
Automatic Racing	Aston Martin Vantage AMR GT4	09	Mikel Miller	Am	4
Dexter Racing^[4]	Aston Martin Vantage AMR GT4	062	Ryan Dexter^[4]	S	1–4
Dexter Racing^[4]	Aston Martin Vantage AMR GT4	062	Warren Dexter^[4]	S	1–4
GMG Racing^[5]	Aston Martin Vantage AMR GT4	2	Jason Bell^[5]	PA	1–4
	Aston Martin Vantage AMR GT4	2	Andrew Davis^[5]	PA	1–4
	Audi R8 LMS GT4 Evo	8	Andy Lee^[5]	PA	1–2
	Audi R8 LMS GT4 Evo	8	Elias Sabo^[5]	PA	1–2
Motorsport USA^[4]	McLaren 570S GT4	5	Michael McAleenan^[4]	Am	1–2, 4
			Jerold Lowe		1
			Dan Rogers^[4]		2, 4
		23	Cavan O'Keefe^[4]	Am	1–2, 4
			Memo Gidley^[4]		1
			Jason Alexandridis		4
			Jerold Lowe^[6]		2
		111	Todd Clarke^[4]	Am	1–2, 4
		111	Ty Clarke^[4]	Am	1–2, 4
Nolasport with OGH^[4]	Porsche 718 Cayman GT4 Clubsport	7	Sean Gibbons^[4]	Am	1–4
Nolasport with OGH^[4]		7	Sam Owens^[4]	Am	1–4
Nolasport^[4]		46	Russell Walker^[4]	Am	1–4
			Patrick Byrne^[4]		1
			David Walker^[6]		2-4
		47	Jason Hart^[4]	PA	1–4
		47	Matt Travis^[4]	PA	1–4
		48	Anthony Geraci	Am	4
		48	Dominic Starkweather	Am	4
Classic BMW^[6]	BMW M4 GT4	11	Toby Grahovec^[6]	S	2-4
Classic BMW^[6]	BMW M4 GT4	11	Stevan McAleer^[6]	S	2-4
BSport Racing^[4]	Aston Martin Vantage AMR GT4	15	Kenton Koch^[4]	PA	1–4
BSport Racing^[4]	Aston Martin Vantage AMR GT4	15	Bryan Putt^[4]	PA	1–4
Capstone Motorsports^[4]	Mercedes-AMG GT4	16	John Allen^[4]	Am	1–4
Capstone Motorsports^[4]	Mercedes-AMG GT4	16	Kris Wilson^[4]	Am	1–4
The Racer's Group^[4]	Porsche 718 Cayman GT4 Clubsport	17	James Rappaport^[4]	Am	1–4
			Robert Orcutt^[4]		1
			Todd Hetherington^[6]		2–4
		66	Derek DeBoer^[4]	PA	1–4
		66	Spencer Pumpelly^[4]	PA	1–4
TGR Forbush Performance^[7]	Toyota GR Supra GT4	18	Matt Forbush^[7]	Am	1–4
TGR Forbush Performance^[7]	Toyota GR Supra GT4	18	Damon Surzyshyn^[7]	Am	1–4
CCR Racing / Team TFB^[4]	BMW M4 GT4	22	Tim Barber^[4]	S	1–4
CCR Racing / Team TFB^[4]	BMW M4 GT4	22	Cole Ciraulo^[4]	S	1–4
Heart of Racing Team^[4]	Aston Martin Vantage AMR GT4	24	Ian James^[4]	PA	1–4
Heart of Racing Team^[4]	Aston Martin Vantage AMR GT4	24	Gray Newell^[4]	PA	1–4
ST Racing^[8]	BMW M4 GT4	28	Ryan Eversley^[8]	PA	1–2
			Joe Rubbo^[8]	PA	1–2
			Harry Gottsacker	S	4
			Tyler Maxson	S	4
		38	Bryson Lew^[8]	S	1, 4
			Tomas Mejia^[8]		1–4
			Nick Wittmer^[6]		2–3
Rearden Racing^[4]	Audi R8 LMS GT4 Evo	29	Dmitri Novikov^[9]	PA	2
		29	Owen Trinkler^[9]	PA	2
		888	Kris McCoy^[4]	PA	1
			Jeff Westphal^[4]	PA	1
			Jeff Westphal^[4]	S	2
			Vesko Kozarov^[9]	S	2
Bimmerworld Racing^[10]	BMW M4 GT4	34	Bill Auberlen^[10]	PA	1–4
		34	James Walker^[10]	PA	1–4
		36	James Clay^[10]	PA	1–4
		36	Nick Galante^[10]	PA	1–4
		94	Chandler Hull^[10]	S	1–4
		94	Jon Miller^[10]	S	1–4
Conquest Racing West	Mercedes-AMG GT4	35	Colin Mullan	S	4
Conquest Racing West	Mercedes-AMG GT4	35	Michael Stevens	S	4
RENNtech Motorsports^[11]	Mercedes-AMG GT4	39	Chris Cagnazzi^[12]	PA	2–4
		39	Guy Cosmo^[12]	PA	2–4
		79	Christopher Gumprecht	PA	4
		79	Kyle Marcelli	PA	4
		89	Ross Chouest^[11]	PA	1–4
		89	Aaron Povoledo^[11]	PA	1–4
PF Racing	Ford Mustang GT4	40	Chad McCumbee	S	4
PF Racing	Ford Mustang GT4	40	James Pesek	S	4
Murillo Racing^[13]	Porsche 718 Cayman GT4 Clubsport	43	Aurora Straus^[13]	Am	1–2
			Christina Nielsen^[13]		1
			Jeff Mosing^[6]		2
	Mercedes-AMG GT4	72	Kenny Murillo^[4]	S	1–4
	Mercedes-AMG GT4	72	Christian Szymczak^[4]	S	1–4
AutoTechnic Racing^[14]	BMW M4 GT4	52	John Capestro-Dubets^[14]	PA	2–4
AutoTechnic Racing^[14]	BMW M4 GT4	52	Tom Capizzi^[14]	PA	2–4
Black Swan Racing^[4]	Porsche Cayman GT4 Clubsport MR	54	Jeroen Bleekemolen^[4]	PA	1–4
Black Swan Racing^[4]	Porsche Cayman GT4 Clubsport MR	54	Tim Pappas^[4]	PA	1–4
WR Racing^[4]	Aston Martin Vantage AMR GT4	59	Brandon Davis^[4]	PA	1–4
WR Racing^[4]	Aston Martin Vantage AMR GT4	59	Paul Terry^[4]	PA	1–4
TGR Smooge Racing^[15]	Toyota GR Supra GT4	68	Kevin Conway^[15]	Am	1–4
TGR Smooge Racing^[15]	Toyota GR Supra GT4	68	John Geesbreght^[15]	Am	1–4
Marco Polo Motorsports^[16]	KTM X-Bow GT4 Evo	71	Nicolai Elghanayan^[16]	S	1–4
Marco Polo Motorsports^[16]	KTM X-Bow GT4 Evo	71	Mads Siljehaug^[16]	S	1–4
Random Vandals Racing^[17]	BMW M4 GT4	98	Paul Sparta^[17]	Am	1–4
			Al Carter^[17]		1–2, 4
			Andrew Wikstrom		3
Stephen Cameron Racing^[4]	BMW M4 GT4	119	Gregory Liefooghe^[4]	PA	1–4
	BMW M4 GT4	119	Sean Quinlan^[4]	PA	1–4
	Porsche 718 Cayman GT4 Clubsport	619	Thomas Merrill	Am	4
	Porsche 718 Cayman GT4 Clubsport	619	Alain Stad	Am	4
Premier Racing	Porsche 718 Cayman GT4 Clubsport	120	Adam Adelson	PA	4
Premier Racing	Porsche 718 Cayman GT4 Clubsport	120	Elliot Skeer	PA	4
RHC Jorgensen / Strom^[4]	BMW M4 GT4	450	Daren Jorgensen^[4]	PA	1–2, 4
RHC Jorgensen / Strom^[4]	BMW M4 GT4	450	Brett Strom^[4]	PA	1–2, 4
CarBahn Motorsports with Peregrine Racing^[6]	Audi R8 LMS GT4 Evo	930	Tom Dyer^[6]	PA	2–4
			Mark Siegel^[6]		2
			Tyler McQuarrie		3–4

Icon	Class
S	Silver Cup
PA	Pro-Am Cup
Am	Am Cup

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
	R1		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
	R2		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
	R1		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
	R2		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
	R1		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
	R2		Matt Dalton Patrick Gallagher	Toby Grahovec Stevan McAleer	Kenton Koch Bryan Putt	John Allen Kris Wilson
4	R1	Road America
	R1
	R2
	R2
5	R1	Watkins Glen
	R1
	R2
	R2
6	R1	Sebring
	R1
	R2
	R2
7	R1	Indianapolis
	R1
	R2
	R2

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					93
2	Tim Barber Cole Ciraulo	CCR Racing / Team TFB	8	15	15	18	7	6					80
3	Stevan McAleer Toby Grahovec	Classic BMW			11	4	5	2					76
4	Chandler Hull Jon Miller	Bimmerworld Racing	18	31	7	Ret	11	7					70
5	Nicolai Elghanayan Mads Siljehaug	Marco Polo Motorsports	9	6	19	9	14	22					67
6	Ryan Dexter Warren Dexter	Dexter Racing	2	4	25	8	Ret	DNS					64
7	Tomas Mejia	ST Racing	27	18	17	12	17	10					58
8	Nick Wittmer	ST Racing			17	12	17	10					40
9	Vesko Kozarov Jeff Westphal	Rearden Racing			9	22							24
10	Bryson Lew	ST Racing	27	18									18
Pro-Am Cup
1	Jason Hart Matt Travis	Nolasport	1	1	1	1	2	3					143
2	Kenton Koch Bryan Putt	BSport Racing	4	8	18	6	9	1					73
3	Brandon Davis Paul Terry	WR Racing	10	3	12	7	4	12					65
4	Gregory Liefooghe Sean Quinlan	Stephen Cameron Racing	6	9	34	3	3	23					59
5	Derek DeBoer Spencer Pumpelly	The Racer's Group	19	5	10	14	6	4					55
6	Jeroen Bleekemolen Tim Pappas	Black Swan Racing	11	7	2	21	Ret	DNS					39
7	Ross Chouest Aaron Povoledo	RENNtech Motorsports	16	16	3	5	22	25					33
8	Jason Bell Andrew Davis	GMG Racing	12	11	6	Ret	13	8					30
9	Tom Capizzi John Capestro-Dubets	AutoTechnic Racing			5	15	8	19					28
10	Bill Auberlen James Walker	Bimmerworld Racing	7	27	4	Ret	16	24					24
11	James Clay Nick Galante	Bimmerworld Racing	25	12	13	Ret	Ret	5					16
12	Chris Cagnazzi Guy Cosmo	RENNtech Motorsports			36	Ret	10	17					12
13	Ryan Eversley Joe Rubbo	ST Racing	24	25	35	10							8
14	Matt Dalton Patrick Gallagher	Notlad Racing by RS1	14	33	Ret	25	12	DNS					8
15	Kris McCoy Jeff Westphal	Rearden Racing	23	10									6
16	Ian James Gray Newell	Heart of Racing Team	20	22	20	19	15	21					4
17	Mark Siegel	CarBahn Motorsports with Peregrine Racing			32	30	21	20					2
18	Tyler McQuarrie	CarBahn Motorsports with Peregrine Racing					21	20					2
19	Andy Lee Elias Sabo	GMG Racing	29	26	16	26							1
	Daren Jorgensen Brett Strom	RHC Jorgensen / Storm	30	32	28	28							0
	Dmitri Novikov Owen Trinkler	Rearden Racing			24	29							0
	Tom Dyer	CarBahn Motorsports with Peregrine Racing			32	30							0
Am Cup
1	Kevin Conway John Geesbreght	TGR Smooge Racing	15	13	8	17	18	11					120
2	John Allen Kris Wilson	Capstone Motorsports	13	14	14	Ret	20	9					94
3	Russell Walker	Nolasport	5	17	27	23	Ret	16					62
4	Paul Sparta	Random Vandals Racing	28	30	21	20	19	13					62
5	Sean Gibbons Sam Owens	Nolasport with OGH	26	24	26	11	Ret	14					55
6	Jerold Lowe	Motorsports USA	17	21	22	13							50
7	Cavan O'Keefe	Motorsports USA	22	20	22	13							48
8	Patrick Byrne	Nolasport	5	17									40
9	Michael McAleenan	Motorsports USA	17	21	29	16							39
10	Andrew Wikstrom	Random Vandals Racing					19	13					33
11	Al Carter	Random Vandals Racing	28	30	21	20							29
12	Todd Clarke Ty Clarke	Motorsports USA	21	23	23	31							28
13	Matt Forbush Damon Surzyshyn	TGR Forbush Performance	32	29	30	27	23	18					26
14	James Rappaport	The Racer's Group	31	28	33	Ret	24	15					24
15	David Walker	Nolasport			27	23	Ret	16					22
16	Todd Hetherington	The Racer's Group			33	Ret	24	15					20
17	Dan Rogers	Motorsports USA			29	16							19
18	Aurora Straus	Murillo Racing	Ret	19	31	24							19
19	Memo Gidley	Motorsports USA	22	20									18
20	Christina Nielsen	Murillo Racing	Ret	19									12
21	Jeff Mosing	Murillo Racing			31	24							7
22	Robert Orcutt	The Racer's Group	31	28									4
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
Blue	Non-classified finish (NC)
Purple	Did not finish (Ret)
Black	Disqualified (DSQ)
Black	Excluded (EX)
White	Did not start (DNS)
	Race cancelled (C)
	Withdrew (WD)
Blank	Did not participate

Bold – Pole
Italics – Fastest Lap

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					93
2	CCR Racing / Team TFB	BMW	8	15	15	18	7	6					80
3	Classic BMW	BMW			11	4	5	2					76
4	Bimmerworld Racing	BMW	18	31	7	Ret	11	7					70
5	Marco Polo Motorsports	KTM	9	6	19	9	14	22					67
6	Dexter Racing	Aston Martin	2	4	25	8	Ret	DNS					64
7	ST Racing	BMW	27	18	17	12	17	10					58
8	Rearden Racing	Audi			9	22							24
Pro-Am Cup
1	Nolasport	Porsche	1	1	1	1	2	3					143
2	BSport Racing	Aston Martin	4	8	18	6	9	1					73
3	WR Racing	Aston Martin	10	3	12	7	4	12					65
4	Stephen Cameron Racing	BMW	6	9	34	3	3	23					59
5	The Racer's Group	Porsche	19	5	10	14	6	4					55
6	RENNtech Motorsports	Mercedes-AMG	16	16	3	5	10	17					45
7	Black Swan Racing	Porsche	11	7	2	21	Ret	DNS					39
8	Bimmerworld Racing	BMW	7	12	4	Ret	16	5					38
9	GMG Racing	Aston Martin Audi	12	11	6	26	13	8					30
10	AutoTechnic Racing	BMW			5	15	8	19					28
11	ST Racing	BMW	24	25	35	10							8
12	Notlad Racing by RS1	Aston Martin	14	33	Ret	25	12	DNS					8
13	Rearden Racing	Audi	23	10	24	29							6
14	Heart of Racing Team	Aston Martin	20	22	20	19	15	21					5
15	CarBahn with Peregrine Racing	Audi			32	30	21	20					2
	RHC Jorgensen / Strom	BMW	30	32	28	28							0
Am Cup
1	TGR Smooge Racing	Toyota	15	13	8	17	18	11					123
2	Capstone Motorsports	Mercedes-AMG	13	14	14	Ret	20	9					94
3	Nolasport	Porsche	5	17	26	11	Ret	14					87
4	Random Vandals Racing	BMW	28	30	21	20	19	13					70
5	Motorsports USA	McLaren	17	20	22	13							52
6	TGR Forbush Performance	Toyota	32	29	30	27	23	18					46
7	The Racer's Group	Porsche	31	28	33	Ret	24	15					40
8	Murillo Racing	Porsche	Ret	19	31	24							28
Pos.	Team	Manufacturer	SON		AUS		VIR		ELK	WGL	SEB	IMS	Points

References

^ "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.
^ "SRO America Cancels CTMP Round for Second Straight Year". sportscar365.com. 2 March 2021. Retrieved 6 March 2021.
^ "Sebring Confirmed as CTMP Replacement". sportscar365.com. June 7, 2021. Retrieved June 7, 2021.
^ ^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.
^ ^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.
^ ^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.
^ ^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.
^ ^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.
^ ^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.
^ ^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.
^ ^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.
^ ^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.
^ ^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.
^ ^a ^b ^c "AutoTechnic Racing Enters Pirelli GT4 America Competition". gt4-america.com. SRO Motorsports Group America. 19 April 2021. Retrieved 22 April 2021.
^ ^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.
^ ^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.
^ ^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.

External links

Official Website

[2021Calendar-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.

[32Entries-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.

[GMGMultiEntries-5] "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.

[EntryList2-6] ^ ^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.

[TGRForbush-7] "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.

[STRacingBMW-8] "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.

[ReardenCOTA-9] "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.

[BimmerworldBMW-10] ^ ^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.

[RENNtechAMG-11] "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.

[RENNtech2-12] "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.

[MurilloPorsche-13] "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.

[AutoTechnic-14] "AutoTechnic Racing Enters Pirelli GT4 America Competition". gt4-america.com. SRO Motorsports Group America. 19 April 2021. Retrieved 22 April 2021.

[TGRSmooge-15] "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.

[MarcoPoloKTM-16] 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.

[RandomVandalsBMW-17] "Random Vandals Racing Joins SRO Pirelli GT4 America". gt4-america.com. SRO Motorsports Group America. 16 February 2021. Retrieved 16 February 2021.

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