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 ...
Take, for instance, this rowdy Knucklehead chopper from Custom Works Zon. Yuichi Yoshizawa and Yoshikazu Ueda took a 1947 Harley-Davidson powerplant and used it as the basis for their build.
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