Highlights
- Rare 1925 Excelsior with period sidecar
- Original 545cc single-cylinder four-stroke engine
- Gorgeous time-earned patina
- Matching numbers example with frame D508 and engine FF1786
- Represents an increasingly scarce piece of early British motorcycle engineering
The Appeal
The Excelsior 545cc comes from a significant chapter in British motorcycle history; one of the so-called 'flat-tankers' produced during a period when the marque was building its reputation for robust, practical machines. This 1925 example is especially noteworthy as it comes complete with its period sidecar - a configuration that showcases exactly what these larger-capacity Excelsiors were designed for.
With its original registration number and matching frame and engine numbers, this motorcycle offers collectors a chance to own an increasingly rare piece of early British motorcycling heritage in its intended touring form.
With its original registration number and matching frame and engine numbers, this motorcycle offers collectors a chance to own an increasingly rare piece of early British motorcycling heritage in its intended touring form.

History and Paperwork
- Belgian documents available
- Reportedly features matching numbers with frame number D508 and engine number FF1786
- A relatively rare example of this model, especially with its original sidecar configuration

The Condition
- Stunning patina to this highly original-looking motorcycle
- Period-correct sidecar attached - a rare find indeed
- The flat fuel tank looks remarkably straight considering its age
- Surface corrosion consistent with age, but this does not appear excessive

The Mechanics
- 545cc single-cylinder four-stroke engine
- Three-speed hand-change manual transmission
- Total-loss lubrication system with manual oil pump included
- Magneto ignition system as per original specification
- Power output of approximately 4.5 to 6 horsepower in period
- Reportedly capable of an estimated top speed of 45-55 mph (approximately 80 km/h)
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