Harley-Davidson’s history includes models that missed the mark—from the Street 500/750 losing the brand’s identity to AMF-era Sportsters plagued by leaks, electrical failures, and build-quality disasters—while others like the XLCR and V-Rod struggled because Harley misunderstood what its core riders actually wanted. Just as the list reaches the notorious Twin Cam 88 engine and the design flaws that cost owners thousands, an even more infamous Harley emerges at the top, so let us watch the video to see which bike earned the number one spot.