Antique motorcycle enthusiasts and vintage collectors are gearing up for a truly spectacular event this fall. A highly coveted 1914 Harley-Davidson Model 10F with Roger Sidecar is slated to hit the auction block at the upcoming Bonhams Autumn Stafford Sale. Known for being one of the earliest highly capable and rideable vintage Harleys, the Model 10F represents a massive leap forward in early 20th-century motorcycle engineering. Accompanied by a period-correct Roger Sidecar, this combination offers a fascinating glimpse into the dawn of motorized touring and family transportation.
The year 1914 was a pivotal one for the Harley-Davidson Motor Company. While their iconic V-Twin engine had been introduced a few years prior, the 1914 Model 10F brought several crucial “firsts” to the brand that transformed the motorcycle from a motorized bicycle into a robust, cross-country road machine.
Most notably, 1914 marked the introduction of Harley-Davidson’s first step starter (commonly known as a kick starter). Riders no longer had to furiously pedal the bike on a stand to fire up the engine. Alongside the step starter, the Model 10F was the first Harley to feature a transmission—a complex two-speed setup ingeniously situated in the rear wheel hub. It also marked the brand’s shift from slipping leather belt drives to a much more reliable rear chain drive, allowing the engine’s torque to be effectively transferred to the road.
This particular Bonhams auction lot is paired with a vintage “Roger Sidecar” (historically tied to the Rogers Sidecar Company of Chicago). Before Harley-Davidson began mass-producing and aggressively marketing their own factory sidecars in 1915, independent manufacturers like Rogers filled the rapidly growing demand for passenger transport.
Adding a sidecar transformed the Model 10F from a solo adventure machine into a practical utility vehicle, frequently used for deliveries, rural mail routes, and weekend family touring. The pairing of this specific 1914 V-Twin with a period Roger sidecar creates a remarkably authentic exhibition piece that captures the transition era of American transportation.
The 1914 Harley-Davidson Model 10F boasted impressive technical specifications for its era, which allowed it to cover long distances with unprecedented reliability. In fact, 1914 models are well-known today for being the oldest Harleys still capable of completing grueling endurance runs like the Motorcycle Cannonball.
This remarkable machine will be a centerpiece at Bonhams’ highly anticipated fall motorcycle event. For buyers looking to acquire a piece of running American history, here is what you need to know:
Note: For UK buyers, this lot is subject to a NOVA declaration for post-sale customs administration. Prospective bidders are encouraged to review Bonhams’ standard shipping and buyer’s premium policies prior to the event.
When it comes to the “Antique” class of motorcycles, pre-1915 machines occupy a holy grail status. However, many early motorcycles from the 1900s are simply too fragile or underpowered for modern roads. The 1914 Harley-Davidson is famous within the vintage community for being the oldest Harley model with a proven track record of sustaining high road mileages today. They were built tough, and over a century later, they still perform.
Acquiring a Model 10F—especially one complete with a historically significant Roger Sidecar—is a rare opportunity to own a museum-quality artifact that doesn’t just sit behind velvet ropes, but is mechanically robust enough to actually ride.
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