1973 American Motocross - Jim Gianatsis
500cc National Race battle with Mike Hartwig (79) Husqvarna and Pierre Karsmakers (3x) Yamaha.

500cc National Race battle with Mike Hartwig (79) Husqvarna and Pierre Karsmakers (3x) Yamaha.

1973 AMA Daytona Supercross

Pierre KarsmakesMike Hartwing1973AMA motocrosssupercross.