Harley-Davidson announced production of the Two-Cam motorcycle as a regular model.
On October 24, 1927, Harley-Davidson announced a new motorcycle for 1928, the Two-Cam Twin. Previously, two-cam motorcycles were available only to racers, hillclimbers, and a few select dealers. Customers had the option of either the 61 cubic inch JH model or the 74 cubic inch JDH model. Due to its racing origins, this model had a lot of power. Over the course of its short run, the two-cam Harley-Davidson motorcycles had compressions as high as 10:1, horsepower measurements of 50 or more, and top speeds of 85 to 100 miles per hour. Production of this motorcycle ceased in 1929 with the onset of the Great Depression, but it remains a memorable model in Harley-Davidson history.