1911 Harley Davidson 7D Twin

US$283,400 The 1911 7D twin was the first Harley v twin with mechanically operated intake valves. Harley history records previous v twins created for racing and promotional purposes, but none are recorded as having been sold, and those that did apparently exist had automatic intake valves that opened by engine vacuum and closed under compression and were close to unrideable. Hence the 7D is the first commercial version of the V twin engine now synonymous with the H D marque.