| MODEL | HONDA NR 750 RC40 1992 |
| Year | 1992 |
| Engine Type | Four stroke, 90° V4, oval pistons, DOHC, 8 valves per cylinder |
| Displacement / Capacity | 747.7 cc / 45.6 cu in |
| Bore X Stroke | 101.2 x 50.6 mm (oval) x 42 mm |
| Compression Ratio | 11.7:1 |
| Cooling System | Liquid cooled |
| Max Power | 92 kW / 125 hp @ 14000 rpm |
| Max Torque | 66 Nm / 48.7 lb-ft @ 11000 rpm |
| Ignition | Computer-controlled digital |
| Induction | Electronic fuel injection, 8x 30 mm throttle bodies, 2 injectors per cylinder |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | Forced pressure, wet sump, oil cooler |
| Gear Box | 6 Speed |
| Clutch | Wet multi-plate |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Triple-square-section aluminium twin-tube |
| Front Suspension | 45 mm Showa inverted fork, adjustable preload, compression and rebound, 120 mm / 4.7 in travel |
| Rear Suspension | Pro-Arm single-sided swingarm with Pro-Link, nitrogen-charged damper with reservoir, 120 mm / 4.7 in travel |
| Front Brakes | 2x 310 mm discs, 4 piston calipers |
| Rear Brakes | Single 220 mm disc, 2 piston caliper |
| DIMENSION SPECS | |
| Overall Length | 2150 mm / 84.6 in |
| Overall Width | 700 mm / 27.6 in |
| Overall Height | 1090 mm / 42.9 in |
| Seat Height | 785 mm / 30.9 in |
| Wheelbase | 1435 mm / 56.5 in |
| Ground Clearance | 130 mm / 5.1 in |
| Dry Weight | 223 kg / 491 lbs |
| Wet Weight | 244 kg / 538 lbs |
| WHEEL SPECS | |
| Front Tyre | 130/70 ZR16 |
| Rear Tyre | 180/55 ZR17 |
| FUEL SYSTEM | |
| Fuel Capacity | 17 Litres / 3.8 US gal |
| Fuel Consumption | 12.6 km/l |
| Top Speed | 257 km/h / 160 mph |
Photo: Michael Gaylard from Horsham, UK, CC BY 2.0, via Wikimedia Commons
Photo: PekePON, CC BY-SA 3.0, via Wikimedia Commons
The NR (RC40) was Honda's showcase road bike, a hand-built, very expensive superbike that put the oval-piston V4 into production. Its 32-valve engine with two conrods per cylinder behaved almost like a V8, fed by eight-throat fuel injection. Magnesium wheels, a single-sided Pro-Arm, adjustable Showa suspension and carbon-fibre bodywork completed a technology-laden package; only around 300 were made, valued more for rarity and engineering than outright speed.
