Instead, Harley buyers with a heart for three wheels wound up with the Tri-Glide. Not surprisingly, the Penster makes use of a 45-degree air-cooled V-Twin for its propulsion, though details on ...

Harley-Davidson. It’s likely the most instantly ... However, the X90 is practically tame compared to the “Penster” prototype. The so-called Penster took a big Screamin’ Eagle twin and ...