| MODEL | HOREX IMPERATOR 400 1954 - 1955 |
| Year | 1954 - 1955 |
| Engine Type | Four stroke, parallel twin cylinder, OHC |
| Displacement / Capacity | 392 cc / 23.9 cu in |
| Bore X Stroke | 61.5 x 66 mm |
| Compression Ratio | 7.25:1 |
| Cooling System | Air cooled |
| Max Power | 19 kW / 26 hp @ 6790 rpm |
| Max Torque | — |
| Ignition | — |
| Induction | Carburetor |
| Start System | Kick |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 4 Speed |
| Clutch | — |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | — |
| Front Suspension | Earles forks |
| Rear Suspension | Dual shocks |
| Front Brakes | 190 mm drum |
| Rear Brakes | 190 mm drum |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | — |
| Ground Clearance | — |
| Dry Weight | — |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 3.25-18 |
| Rear Tyre | 3.50-18 |
| FUEL SYSTEM | |
| Fuel Capacity | 17 Litres / 4.5 US gal |
| Fuel Consumption | — |
| Top Speed | — |
The Imperator was Horex's overhead-cam parallel twin, first shown as a 500 and then sold from 1954 in a smaller 400 class with around 26 hp. It was offered with either telescopic forks or a leading-link front end and rode on 18-inch wheels. It sat above the Regina singles as the sporting flagship of the Bad Homburg range.
