Join or Sign In
Sign in to customize your TV listings
By joining TV Guide, you agree to our Terms of Use and acknowledge the data practices in our Privacy Policy.

The 1975 AMA 500cc National Championship Series will go down in the history of motocross as one of the most exciting and controversial in the sport's history. A young filmmaker named Charles Bush decided to follow the series that year with his crew to make a documentary film about motocross.
Loading. Please wait...