The Honda CBR400RR motorcycle, released in 1991, has a four-stroke transverse four-cylinder engine with a capacity of 399 cc. It features a liquid-cooling system with a radiator and cooling fan, and a Trockoid oil pump. The bike has a maximum power output of 59 hp at 12500 rpm and a torque of 39 Nm at 10000 rpm. It has a six-speed transmission and final drive chain with a primary drive of 2.117. The frame is a twin-spar, box-section aluminum. It has a Showa damper-rod front fork suspension and Showa gas/oil shock rear suspension with adjustable preload and compression. The front brakes are two 275mm discs with four-piston calipers, while the rear brake is a single 220mm disc with two-piston caliper. It has a rake angle of 24.3 degrees and a trail of 91mm. The length of the bike is 1990mm, width 670mm, and height 1080mm. The wheelbase measures 1375mm, seat height is 750mm, and dry weight is 163kg. It has a fuel capacity of 15 litres and a ground clearance of 125mm. This model was tested and reviewed by Moto Sprint in 1991.
Technical specifications:
Make Model: Honda CBR 400RR
| Year | 1991 |
|---|---|
| Engine | Four stroke, transverse four cylinder, DOHC, 4 valve per cylinder. |
| Capacity | 399 cc / 24.3 cu-in |
| Valve | Intake valve closes @ 1mm lift / Exhaust valve opens @ 1mm lift |
| Bore x Stroke | 55 x 42 mm |
| Cooling System | Liquid cooled; radiator with cooling fan |
| Compression Ratio | 11.3:1 |
| Lubrication | Forced pressure and wet sump |
| Oil Pump Type | Trockoid |
| Oil Capacity | 3.8 Liters |
| Induction | 4x 26mm Flat-side CV |
| Charging | Triple phase output alternator |
| Ignition | Digitalized full transistor ignition |
| Spark Plug | NGK CR9EH-9 or ND U27FER-9 |
| Battery | 12v (6AH) YTX7A-BS |
| Starting | Electric |
| Max Power | 59 hp / 42.2 kW @ 12500 rpm |
| Max Torque | 39 Nm / 28.8 ft-lb @ 10000 rpm |
| Clutch | Multi-plate, wet |
| Transmission | 6 Speed |
| Final Drive | Chain |
| Primary Drive | 2.117 |
| Gear Ratio | 1st 3.307: 1 (43/13) 2nd 2.352: 1 (40/17) 3rd 1.875 (30/16) 4th 1.591 (35/22)3 5th 1.435 (33/23) 6th 1.318 (29/22) |
| Frame | Twin-spar, box-section aluminum |
| Front Suspension | 41mm Showa damper-rod forks with adjustable pre-load |
| Rear Suspension | Showa gas/oil shock with adjustable preload and compression |
| Front Brakes | 2x 275mm discs 4 piston calipers |
| Rear Brakes | Single 220mm disc 2 piston caliper |
| Font Wheel | 17×3.5 in. |
| Rear Wheel | 17×4.5 in. |
| Front Tyre | 120/60-17 |
| Rear Tyre | 150/60-18 |
| Rake | 24.3 degrees |
| Trail | 91 mm / 3.6 in |
| Dimensions | Length 1990mm / 78.3 in width 670mm / 26.4 in Height 1080 mm / 42.5 in |
| Wheelbase | 1375mm / 54.1 in |
| Seat Height | 750 mm / 29.5 in |
| Dry Weight | 163 kg / 359.4 lbs |
| Ground Clearance | 125 mm / 4.9 in |
| Fuel Capacity | 15 Litres / 4.0 gal |
| Road Test | Moto Sprint 1991 |
