1972 Trans-AMA motocross series

Ake Jonsson during Round 3 of the 1972 Trans-AMA in St. Peters, Missouri.

The 1972 Trans-AMA motocross series was the third annual international series established by the American Motorcyclist Association as a pilot event to help establish motocross in the United States. The motocross series was an invitational based on a 500cc engine displacement formula, run on American tracks featuring the top riders from the F.I.M. world championship against the top American riders.

Swedish Maico factory rider Åke Jonsson dominated the championship, winning nine consecutive overall wins. 500cc world champion, Roger De Coster and Heikki Mikkola placed second and third overall, claiming one victory apiece to start off the series before Jonsson began his winning streak. Brad Lackey was the highest-placing American rider, finishing the series sixth overall.

1972 Trans-AMA rounds

Round	Date	Location	Overall Winner	Top American
1	24 September	Copetown, Ontario	Roger De Coster	Brad Lackey
2	1 October	Linnville, Ohio	Heikki Mikkola	Bryan Kenney
3	8 October	St. Peters, Missouri	Åke Jonsson	Brad Lackey
4	15 October	Atlanta, Georgia	Åke Jonsson	Jimmy Weinert
5	22 October	Orlando, Florida	Åke Jonsson	Brad Lackey
6	29 October	Houston, Texas	Åke Jonsson	Brad Lackey
7	5 November	Carlsbad Raceway	Åke Jonsson	Brad Lackey
8	12 November	Phoenix, Arizona	Åke Jonsson	Brad Lackey
9	19 November	Puyallup, Washington	Åke Jonsson	Brad Lackey
10	26 November	Livermore, California	Åke Jonsson	Brad Lackey
11	3 December	Irvine, California	Åke Jonsson	Marty Tripes
Sources: [1] [2]

1972 Trans-AMA final standings

Pos	Rider	Machine	1	2	3	4	5	6	7	8	9	10	11	Pts
1	Åke Jonsson	Maico	2	4	1	1	1	1	1	1	1	1	1	1550
2	Roger De Coster	Suzuki	1	3		2			2	3	3	2	4	912
3	Heikki Mikkola	Husqvarna	3	1	2		2	3	3	2				811
4	Hans Maisch	Maico		2	3		8		4	8	5		3	530
5	Arne Kring	Husqvarna			4	7	3	4		5	2			487
6	Brad Lackey	Kawasaki	4	10	6	9	6	8	6	7	8	4	9	460
7	Bengt Åberg	Husqvarna					5				4	7	2	304
8	Pierre Karsmakers	Husqvarna			5	10	4	5	7	10			10	303
9	Christer Hammargren	Yamaha						2	9	6	7		8	264
10	Miroslav Halm	ČZ							5		9	3	7	228
-	Jaak van Velthoven	Yamaha						6	8	4		6		-
-	Serge Bacou	Bultaco	7	5			9	7						-
-	Gary Jones	Yamaha		15	7	12	12	11	10	12	15	9	11	-
-	Mike Runyard	Suzuki	5	12	23	8	11	20	12	17	12	12	13	-
-	Rich Thorwaldson	Suzuki	8	20	8	4	19	19	14	16	11	13	15	-
-	Jim Pomeroy	Bultaco		9	19	5	10	13	13	19	10	18	12	-
-	Bryan Kenney	Maico		6	25	6	13	12	11	18	16	14	16	-
-	Mark Blackwell	Husqvarna		13	12	13	14	10	17	14	14	15	14	-
-	Jimmy Weinert	Yamaha		11	16	3	7	14	22	11				-
-	Gary Chaplin	Maico	6	17	21	16	20				13	11	18	-
-	Billy Clements	Husqvarna	9	16	14	14	23		16	13				-
-	Andy Roberton	Husqvarna								9	6		5	-
-	Wyman Priddy	ČZ		8	10	11						17		-
-	Marty Tripes	Yamaha		24	20	20	16					8		-
	ČZ											6
-	Jiří Churavý	ČZ						9				5		-
-	Dave Bickers	ČZ		7	9									-
-	Seppo Makinen	Husqvarna	10											-
-	Masaharu Takezawa	Kawasaki										10		-
Sources only document the points awarded to the first ten competitors. Sources: [1] [2] [3]

References

1. Trans-AMA Motocross Records, American Motorcyclist, January 1975, Vol. 29, No. 1, ISSN   0277-9358
2. "1972 Trans-AMA Series results". akejonsson.com. Retrieved February 15, 2016.
3. "1972 AMA 500cc results". racerxonline.com. Retrieved November 4, 2025.

See also

• 1972 AMA Motocross National Championship season
• 1972 FIM Motocross World Championship
• List of Trans-AMA motocross champions