Yamaha FZR 400RR-SP (1990-91) vs Yamaha XJ 900F (1990-93)
Comparison technical specifications
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| Make: | Yamaha | Yamaha |
| Model: | FZR 400RR-SP | XJ 900F |
| Years: | 1990-91 | 1990-93 |
| Engine: | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. | Four stroke, transverse four cylinder, DOHC, 2 valves per cylinder. |
| Capacity: | 399 cc / 24.3 cu-in | 891 cc / 54.3 cu-in |
| Bore x Stroke: | 56 x 40.5 mm | 68.5 x 60.5 mm |
| Cooling System: | Liquid cooled | Air cooled |
| Compression Ratio: | 12.2:1 | 9.6:1 |
| Induction: | Carburetor | 4x Mikuni BS36 |
| Ignition: | Analogue CDI (Capacitive Discharge Ign.) | CDI |
| Max Power: | 66 hp / 48.6 kW @ 12500 rpm | 98 hp / 72 kW @ 9000 rpm |
| Max Torque: | 4.0 kgf-m @ 9500 rpm | 81 Nm / @ 7000 rpm |
| Clutch: | Wet multiple plates | Wet, 6 springs |
| Transmission: | 6 Speed | 5 Speed |
| Final Drive: | Chain | Shaft |
| Frame: | Aluminium delta box | Steel tubular |
| Front Suspension: | 41mm Telescopic forks | 37mm Telescopic fork |
| Rear Suspension: | Monoshock single shock preload adjustable. | Twin shock, Swingarm |
| Front Brakes: | 2x 298mm discs 2 piston calipers | 2x 267mm discs |
| Rear Brakes: | Single 210mm disc 2 piston caliper- | Single 267mm disc, |
| Front Tyre: | 120/60 VR17 | 100/90-18 |
| Rear Tyre: | 160/60 VR17 | 120/90-18 |
| Seat Height: | 760 mm / 30.7 in | 780mm / 30.7 in |
| Fuel Capacity: | 15 Litres / 3.9 gal | 22 Litres / 5.8 US gal |