After all, the first choppers emerged in the late ’40s and early ’50s from Harleys via Flathead, Knucklehead and Panhead ... What’s a Harley without a big, rumbling engine?

Jay Leno's 1936 Harley-Davidson Knucklehead had already been sitting for years when he bought the it, and the former Tonight Show hostleft it resting for a few more decades in his own garage ...

2025 harley davidson breakout ... After all, the first choppers emerged in the late ’40s and early ’50s from Harleys via Flathead, Knucklehead and Panhead engines, often pulled from surplus ...