| MODEL | HONDA NSR 250SP ROTHMANS REPLICA 1992 |
| Year | 1992 |
| Engine Type | Two-stroke, 90° V-twin, reed valve, exhaust valve |
| Displacement / Capacity | 249 cc / 15.2 cu in |
| Bore X Stroke | 54 x 54.5 mm |
| Compression Ratio | 7.3:1 |
| Cooling System | Liquid cooled |
| Max Power | 32.8 kW / 45 hp @ 9500 rpm |
| Max Torque | 35 Nm / 25.8 lb-ft @ 8500 rpm |
| Ignition | PGM-CDI |
| Induction | TA20 carburettor |
| Start System | Kick |
| TRANSMISSION SPECS | |
| Lubrication | Separate pump (engine), splash type (transmission) |
| Gear Box | 6-speed, constant mesh |
| Clutch | Multi-plate, coil spring |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Aluminium tube type |
| Front Suspension | 41 mm telescopic fork, air valve, semi-adjustable |
| Rear Suspension | Pro-Link single shock swingarm, non-adjustable |
| Front Brakes | 2 x discs, 2-piston calipers |
| Rear Brakes | Single disc, 1-piston caliper |
| DIMENSION SPECS | |
| Overall Length | 1975 mm / 77.7 in |
| Overall Width | 655 mm / 25.7 in |
| Overall Height | 1060 mm / 41.7 in |
| Seat Height | 770 mm / 30.3 in |
| Wheelbase | 1345 mm / 52.9 in |
| Ground Clearance | 135 mm / 5.3 in |
| Dry Weight | 132 kg / 291 lbs |
| Wet Weight | 151 kg / 333 lbs |
| WHEEL SPECS | |
| Front Tyre | 110/70-17 53H |
| Rear Tyre | 150/60-R18 67H |
| FUEL SYSTEM | |
| Fuel Capacity | 16 Litres / 4.2 US gal |
| Fuel Consumption | — |
| Top Speed | — |
For 1992 the MC21 NSR line got new colours rather than mechanical changes, and the SP came back in Rothmans Honda team colours with its usual SP extras. Honda capped the run at 1,500 bikes at 770,000 yen, which is why collectors chase them today.
