Comparison of Norton Dominator 99SS 1957 and Norton Dominator 99SS 1956 [S]ave
| Attribute |  Norton Dominator 99SS 1957 × | Norton Dominator 99SS 1956 × |
|---|---|---|
| General | ||
| Production from (year) | 1957 | 1956 |
| Make | Norton | Norton |
| Model | Norton Dominator 99SS | Norton Dominator 99SS |
| Category | Allround | Allround |
| Engine and transmission | ||
| Engine type | Twin, four-stroke | Twin, four-stroke |
| Fuel system | Carburettor. Amal | Carburettor. Amal |
| Displacement (cm³) | 596 | 596 |
| Power (kw) | 22.6 | 22.6 |
| Transmission type,final drive | Chain | Chain |
| Bore (mm) | 68 | 68 |
| Stroke (mm) | 82 | 82 |
| Fuel control | Overhead Valves (OHV) | Overhead Valves (OHV) |
| Ignition | Coil | Coil |
| Compression | 7.4:1 | 7.4:1 |
| Exhaust system | - | Chrome-two into two |
| Chassis | ||
| Front suspension | Telescopic | Telescopic |
| Rear suspension | Swingarm -two plungers | Swingarm -two plungers |
| Front brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Rear brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Frame type | Down tube-single | Down tube-single |
| Seat | Dual | Dual |
| Wheels | Spoked | Spoked |
| Other | ||
| Starter | Kick | Kick |
| Dimensions | ||
| Wheelbase (mm) | 1,410 | 1,410 |
| Seat height (mm) | 787 | 787 |
| Performance | ||
| Top speed (km/h) | 163 | 163 |
| Fuel capacity (l) | 16 | 16 |
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