| MODEL | HONDA CB 1100R RB 1981 |
| Year | 1981 |
| Engine Type | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder |
| Displacement / Capacity | 1062 cc / 64.8 cu in |
| Bore X Stroke | 70 x 69 mm |
| Compression Ratio | 10.0:1 |
| Cooling System | Air cooled |
| Max Power | 87.5 kW / 120 hp @ 9000 rpm |
| Max Torque | 98 Nm / 72.5 lb-ft @ 7500 rpm |
| Ignition | Electronic |
| Induction | 4x 33 mm Keihin carburettors |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 5 Speed |
| Clutch | — |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Steel tube double cradle |
| Front Suspension | Adjustable telescopic hydraulic fork |
| Rear Suspension | Swingarm with adjustable hydraulic twin shock absorbers |
| Front Brakes | 2x 296 mm discs, 2 piston calipers |
| Rear Brakes | Single 296 mm disc, 2 piston caliper |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | 805 mm / 31.7 in |
| Overall Height | — |
| Seat Height | 795 mm / 31.3 in |
| Wheelbase | 1490 mm / 58.7 in |
| Ground Clearance | — |
| Dry Weight | 235 kg / 518 lbs |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 3.50-19 |
| Rear Tyre | 130/90-18 |
| FUEL SYSTEM | |
| Fuel Capacity | 26 Litres / 6.9 US gal |
| Fuel Consumption | — |
| Top Speed | 230 km/h / 143 mph |
The CB1100RB was Honda's homologation special for production racing, built in small numbers with styling related to the CB900F. The first version had a half fairing, a solo seat, a large fuel tank and Comstar wheels with a 19-inch front, and its claimed 120 hp made it one of the fastest road bikes of its time.
