no
There is actually a company called, "American Motorcycle Parts" that sells American made motorcycle parts. Additionally, one can purchase American made parts from Harley Davidson.
The original Indian Motorcycle Company built the first American-made motorcycle in 1901
England
Indian motorcycles were made by Hendee Manufacturing Company from 1901 to 1953. The name of the company was changed to the Indian Motorcycle Manufacturing Company in 1928.
1953
American motorcycle parts can be bought both online or in an American brick and mortar store. Harley Davidson is the most well known maker of American made motorcycle parts.
It was made in the 1940s
Japan
An Indian Enfield is one of the new Royal Enfield motorcycles that are made in India to the design specs of the original. I believe that they are made from the original specs.
Indian Motorcycle is considered to be America's first motorcycle, founded in 1901. For the first ten years since its development, Indian Motorcycles were the world's top selling motorcycles.
You can find motorcycle parts in a motorcycle shops that have been established 20-40 years old already.