On February 22, 1921, Harley-Davidson's, Otto Walker, entered
the record books when he became the first man in the world to win a motorcycle
race at an average speed of over 100 mph. He accomplished this at the
Fresno, California board track on an 8-valve, banjo 2-cam. Walker
exceeded 107 mph in the 1-mile time trial, 104 mph in the 15-mile
event, and 101 mph in the 50-mile race.
Notice the oversize oil pump and brass cover on the cam chest.