| MODEL | HONDA CBR 400RR 1988 |
| Year | 1988 |
| Engine Type | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder |
| Displacement / Capacity | 399 cc / 24.3 cu in |
| Bore X Stroke | 55 x 42 mm |
| Compression Ratio | 11.3:1 |
| Cooling System | Liquid cooled, radiator with cooling fan |
| Max Power | 42.2 kW / 59 hp @ 12500 rpm |
| Max Torque | 39 Nm / 28.8 lb-ft @ 10000 rpm |
| Ignition | Digital full-transistor ignition |
| Induction | 4x 26 mm flat-side CV carburettors |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | Forced pressure, wet sump |
| Gear Box | 6 Speed |
| Clutch | Wet multi-plate |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Twin-spar box-section aluminium |
| Front Suspension | 41 mm Showa damper-rod forks, adjustable preload |
| Rear Suspension | Showa gas/oil shock, adjustable preload and compression |
| Front Brakes | 2x 275 mm discs, 4-piston calipers |
| Rear Brakes | Single 220 mm disc, 2-piston caliper |
| DIMENSION SPECS | |
| Overall Length | 1990 mm / 78.3 in |
| Overall Width | 670 mm / 26.4 in |
| Overall Height | 1080 mm / 42.5 in |
| Seat Height | 750 mm / 29.5 in |
| Wheelbase | 1375 mm / 54.1 in |
| Ground Clearance | 125 mm / 4.9 in |
| Dry Weight | 163 kg / 359.4 lbs |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 120/60-17 |
| Rear Tyre | 150/60-18 |
| FUEL SYSTEM | |
| Fuel Capacity | 15 Litres / 4.0 US gal |
| Fuel Consumption | — |
| Top Speed | — |
The 1988 CBR400RR-J introduced the RR name with an aluminium twin-spar frame and a braced 'Tri-Arm' swingarm. Its gear-driven-cam inline four made the 59 PS ceiling of the Japanese 400 class at very high revs. Compared with Honda's own VFR400R V4 it felt roomier and buzzier but less sharp.
