1956 Norton International 30

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Specifications
- Category
- Classic
- Displacement
- 490.0 ccm (29.90 cubic inches)
- Engine
- Alloy motor
- Power
- 29.5 HP (21.5 kW) @ 5500 RPM
- Top speed
- 149.7 km/h (93.0 mph)
The 1956 Norton International 30
1956 Norton International 30 sits near the top of Norton's road-going single-cylinder range, built as the catalog cousin to the works racers that made the Manx name known on circuits across Europe. This is a hand-built, alloy-engined machine meant for riders who understand that speed on a bike like this comes from precision and balance rather than sheer output. It rewards smooth inputs, careful cornering lines, and an owner willing to keep the engine properly tuned and the chassis dialed in. Ownership means regular maintenance rituals: adjusting valve clearances, checking primary chain tension, and treating the bike less like transport and more like a mechanical relationship. The 1956 model carried over without significant mechanical changes from the prior year — buyers comparing it to a 1955 example should focus on mileage, service history, and condition rather than spec differences. Collectors and vintage racing enthusiasts drive most of the demand here, often riders stepping up from smaller British singles who want something with genuine competition pedigree. Given high collector interest, well-documented examples with matching numbers and verified racing history command real attention at auction, making provenance research essential before buying a 1956 Norton International 30.


