Yamaha IT 490 (1983) vs Yamaha IT 400 (1977-78) vs Kawasaki Z 900 (1976) vs Honda CBR 600F4i Sport (2002)
Comparison technical specifications
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| Make: | Yamaha | Yamaha | Kawasaki | Honda |
| Model: | IT 490 | IT 400 | Z 900 | CBR 600F4i Sport |
| Years: | 1983 | 1977-78 | 1976 | 2002 |
| Engine: | Two stroke, single cylinder, read valve | Two stroke, single cylinder, read valve | Four stroke, transverse four cylinder, DOHC, 2 valve per cylinder. | Four stroke, Transverse four cylinder, DOHC, 4 valve per cylinder. |
| Capacity: | 487 cc / 29.7 cu-in | 396 cc / 24.1 cu-in | 903 cc / 55.1 cu-in | 599 cc / 36.5 cu-in |
| Bore x Stroke: | 87 x 82 mm | 85 x 70 mm | 66 x 66 mm | 67 x 42.5 mm |
| Compression Ratio: | 4.9;1 | 7.6:1 | 8.5:1 | 12.0:1 |
| Induction: | VM38SS Mikuni carburetor | VM38SS Mikuni carburetor | 4x 26mm Mikuni VM26SS | Electronic fuel injection |
| Ignition: | CDI | CDI | Mechanical breaker dual lead coil | Digital transistorized 3 dimensional mapping computer-controlled. |
| Max Power: | 35 hp @ 6000 rpm | 40 hp / 29.8 kW @ 7000 rpm | 81 hp / 59 kW @ 8500 rpm | 110.2 hp / 81 kW @ 12500 rpm |
| Max Torque: | 31 lb-ft @ 5500 rpm | 30.9 lb-ft / 41.8 Nm @ 6000 rpm | 73.5 Nm / 52.8 lb-ft @ 7000 rpm | 6.6 kgf-m / 65 Nm @ 10500 rpm |
| Transmission: | 5 Speed | 5 Speed | 5 Speed | 6 Speed |
| Final Drive: | Chain | Chain | Chain | #525 O-ring-sealed chain |
| Front Suspension: | 43mm Telescopic adjustable forks | 43mm Telescopic adjustable forks | 36mm Telescopic forks | 43mm fully adjustable cartridge-type fork |
| Rear Suspension: | Mono shock, adjustable spring preload and rebound damping | Mono shock, adjustable spring preload and rebound damping | Dual shock, 5-way preload adjustment | Pro-Link featuring fully adjustable gas-charged remote reservoir damper |
| Front Brakes: | Drum | Drum | 2x 296mm discs | 2x 296mm discs 4 piston calipers |
| Rear Brakes: | Drum | Drum | 200mm drum | Single 220mm disc 1 piston caliper |
| Front Tyre: | 3.00 -21 | 3.00 -21 | 3.25H-19 | 120/70 ZR17 |
| Rear Tyre: | 150/80 -18 | 150/80 -18 | 4.00S-18 | 180/55 ZR17 |
| Rake: | 28° | 31.5° | 27º | 24° |
| Wheelbase: | 1435 mm / 56.5 in | 1430 mm / 56.2 in | 1498.6 mm / 59.0 in | 1386 mm / 54.9 in |
| Ground Clearance: | 332 mm / 13.1 in | 240 mm / 9.4 in | 170 mm / 6.75 in. | 135 mm / 5.3 in |
| Dry Weight: | 112.5 kg / 248 lbs | 115 kg / 253.5 lbs | 230 kg / 507 lbs | 167 kg / 368 lbs |
| Fuel Capacity: | 13.6 Litres / 3.6 US gal | 13.6 Litres / 3.4 US gal | 18 Litres / 4.7 gal | 18 Liters / 4.2 gal |