| MODEL | HONDA CBR 450SR 1989 - 1990 |
| Year | 1989 - 1990 |
| Engine Type | Four stroke, parallel twin, SOHC, 3 valves per cylinder |
| Displacement / Capacity | 447 cc / 27.2 cu in |
| Bore X Stroke | 75 x 50.6 mm |
| Compression Ratio | 9.2:1 |
| Cooling System | Air cooled, with oil cooler |
| Max Power | 33.6 kW / 46.5 hp @ 8500 rpm |
| Max Torque | 4.2 kgf-m @ 7000 rpm |
| Ignition | CDI |
| Induction | Keihin 31.3 mm carburettors |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 6 Speed |
| Clutch | — |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Steel tube, dual side box beam |
| Front Suspension | 37 mm telescopic fork, 140 mm / 5.5 in travel |
| Rear Suspension | Monoshock, box section swingarm, 110 mm / 4.3 in travel |
| Front Brakes | 2 x 275 mm discs, 2-piston calipers |
| Rear Brakes | Single 220 mm disc, 1-piston caliper |
| DIMENSION SPECS | |
| Overall Length | 2010 mm / 79.1 in |
| Overall Width | 720 mm / 28.3 in |
| Overall Height | 1120 mm / 44.0 in |
| Seat Height | 775 mm / 30.5 in |
| Wheelbase | 1370 mm / 53.9 in |
| Ground Clearance | 140 mm / 5.5 in |
| Dry Weight | 178 kg / 392.4 lbs |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 110/80-17 |
| Rear Tyre | 130/70-17 |
| FUEL SYSTEM | |
| Fuel Capacity | 14 Litres / 3.7 US gal |
| Fuel Consumption | — |
| Top Speed | — |
A Brazilian-built Honda sports bike launched in September 1989, using a 447 cc twin dressed in a full fairing styled after the Japanese CBR250RR. The 1989-1990 graphics are regarded as the classic livery of the model.
