| Attribute | Yamaha XJ 550 H × | Norton Dominator 88SS 1962 × |
|---|---|---|
| General | ||
| Production from (year) | 1981 | 1962 |
| Make | Yamaha | Norton |
| Model | Yamaha XJ 550 H | Norton Dominator 88SS |
| Category | Classic | Allround |
| Engine and transmission | ||
| Engine type | In-line four, four-stroke | Twin, four-stroke |
| Valves per cylinder | 2 | - |
| Fuel system | Carburettor | Carburettor. Amal |
| Displacement (cm³) | 528 | 497 |
| Power (kw) | 36.5 | 26.3 |
| Cooling system | Air | Air |
| Transmission type,final drive | Chain | Chain |
| Bore (mm) | 57 | 66 |
| Stroke (mm) | 51.8 | 73 |
| Gearbox | 6-speed | - |
| Fuel control | Double Overhead Cams/Twin Cam (DOHC) | Overhead Valves (OHV) |
| Compression | 9.5:1 | 8.5:1 |
| Chassis | ||
| Front suspension | - | Telescopic-coil springs |
| Rear suspension | - | Swingarm with three shoks |
| Front brakes | Single disc | Expanding brake (drum brake) |
| Rear brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Frame type | - | Doble cradle |
| Seat | - | Dual |
| Other | ||
| Starter | Electric | - |
| Performance | ||
| Top speed (km/h) | 176 | 176 |
| Fuel capacity (l) | 14.98 | - |