The 1941 WLD Sport Solo Harley Davidson motorcycle was a continuation of the W-series first introduced by Harley Davidson motorcycle company in 1937. Harley Davidson motorcycle company followed Indian when the latter produced its first 45 cu. in. side-valve engine in 1927. Initially, the Indian 45s were the most highly regarded, but when Harley Davidson introduced the W-series in 1937, it was the Milwaukee-built motorcycles that enjoyed the better specification and reputation.

Replacing the R-series -- with which they had much in common -- the three models in the original lineup were the basic W, the high-compression WLD, and the competition model WLDR. The new Harley Davidson motor was 45 cubic inches (738cc) and had an estimated 25 brake horsepower. Transmission was a three speed with chain drive, the WLD Sport Solo Harley Davidson motorcycle weighed 692 pounds with a top speed of 96mph.

The 1941 WLD Sport Solo Harley Davidson motorcycle is a rare motorcycle because by this time most of Harley Davidson's production was devoted to military machines. The Harley 45s were basic, robust machines that made them ideal for converting to military motorcycles.