| MODEL | HONDA CBR 250RR 1990 - 1991 |
| Year | 1990 - 1991 |
| Engine Type | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder |
| Displacement / Capacity | 249 cc / 15.2 cu in |
| Bore X Stroke | 48.5 x 33.8 mm |
| Compression Ratio | 11.5:1 |
| Cooling System | Liquid cooled |
| Max Power | 32.8 kW / 45 hp @ 14500 rpm |
| Max Torque | 23.5 Nm / 17.3 lb-ft @ 11500 rpm |
| Ignition | CDI |
| Induction | Keihin 29 mm carburettors |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 6 Speed |
| Clutch | Wet multi-plate, coil spring |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Aluminium diamond |
| Front Suspension | 37 mm telescopic fork |
| Rear Suspension | Mono-shock, box-section swingarm |
| Front Brakes | 2x 275 mm discs, 2-piston calipers |
| Rear Brakes | Single 220 mm disc, 1-piston caliper |
| DIMENSION SPECS | |
| Overall Length | 1975 mm / 77.8 in |
| Overall Width | 675 mm / 26.6 in |
| Overall Height | 1080 mm / 42.5 in |
| Seat Height | 735 mm / 28.9 in |
| Wheelbase | 1345 mm / 53.0 in |
| Ground Clearance | 130 mm / 5.1 in |
| Dry Weight | 143 kg / 315 lbs |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 110/70-R17 |
| Rear Tyre | 140/60-R17 |
| FUEL SYSTEM | |
| Fuel Capacity | 13 Litres / 3.4 US gal |
| Fuel Consumption | — |
| Top Speed | — |
The CBR250RR (MC22) launched in 1990 as the final and most sophisticated of Honda's four-cylinder 250s. It moved to an aluminium frame, a box-section monoshock swingarm and wider radial tyres. The 249 cc four revved past 14,000 rpm, making it one of the most exotic small sportbikes of its time.
