| MODEL | HONDA CBR 750RR FIREBLADE PROTOTYPE 1990 |
| Year | 1990 |
| Engine Type | Four stroke, transverse four cylinder (development basis for the CBR900RR) |
| Displacement / Capacity | 750 cc / 45.8 cu in |
| Bore X Stroke | — |
| Compression Ratio | — |
| Cooling System | — |
| Max Power | — |
| Max Torque | — |
| Ignition | — |
| Induction | — |
| Start System | — |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | — |
| Clutch | — |
| Final Drive | — |
| CHASSIS SPECS | |
| Frame | — |
| Front Suspension | — |
| Rear Suspension | — |
| Front Brakes | — |
| Rear Brakes | — |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | — |
| Ground Clearance | — |
| Dry Weight | — |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | — |
| Rear Tyre | — |
| FUEL SYSTEM | |
| Fuel Capacity | — |
| Fuel Consumption | — |
| Top Speed | — |
This was the in-house research bike that became the first Fireblade. Project leader Tadao Baba wanted a big sportsbike that was as light and compact as a 600, and the 750 cc prototype already had the aluminium beam frame, 16-inch front wheel and big swingarm of the later road bike. Honda then kept the bore but lengthened the stroke to reach 893 cc, so the 750 version stayed a footnote that was never sold.
