Most Expensive Motorcycles
1920 Ace Four
When the Henderson brothers sold the Henderson motorcycle to Ignatz Schwinn in 1917, both brothers quickly moved onwards, with Thomas traveling to Europe, and Bill deciding to build a new and better four cylinder motorcycle. That bike became the Ace. The Ace 4 retained an F head cylinder, and increased in displacement of 75 cu in. (1220cc), with splash lubrication and a three speed gearbox for an output of 20 hp. This 1920 Ace 4 is an older restoration, and bears the earliest Ace serial number known.Lot S78 was estimated at $85,000 to $125,000 and sold for $126,500.