You can’t beat the sound of a finely tuned engine, but an unusual exhaust noise isn’t music to anyone’s ears. A noisy exhaust isn’t just an annoying distraction – it could be a sign that ...

From 1911 to 1929, the IOE (intake/inlet over exhaust) F-Head motor was the original Big Twin ... From 1966 to 1984, the next Big Twin to follow in the Panhead's footsteps was the Shovelhead. Just ...