Yamaha IT 490 (1983) vs Yamaha IT 400 (1977-78) vs Kawasaki Z 900 (1976) vs Honda CBR 600F4i Sport (2002) vs Aprilia Tuareg 125 Wind (1990-) vs Yamaha YZF 600R Thundercat (2000)
Comparison technical specifications
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| Make: | Yamaha | Yamaha | Kawasaki | Honda | Aprilia | Yamaha |
| Model: | IT 490 | IT 400 | Z 900 | CBR 600F4i Sport | Tuareg 125 Wind | YZF 600R Thundercat |
| Years: | 1983 | 1977-78 | 1976 | 2002 | 1990- | 2000 |
| 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. | Two stroke, single cylinder | Four stroke, transverse four cylinder, DOHC, 4 valves 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 | 124 cc / 7.6 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 | 54 x 54 mm | 62 x 49.6 mm |
| Compression Ratio: | 4.9;1 | 7.6:1 | 8.5:1 | 12.0:1 | 15.5:1 | 12.0:1 |
| 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 | 18.6 kW / 25 hp @ 9000 rpm | 72.9 kW / 100 hp @ 11500 rpm |
| Transmission: | 5 Speed | 5 Speed | 5 Speed | 6 Speed | 6 Speed | 6 Speed |
| Final Drive: | Chain | Chain | Chain | #525 O-ring-sealed chain | Chain | 530 O-ring chain OEM sprocket sizes per tooth Front= 15 Back= 47 |
| Front Suspension: | 43mm Telescopic adjustable forks | 43mm Telescopic adjustable forks | 36mm Telescopic forks | 43mm fully adjustable cartridge-type fork | Telescopic fork | 41 mm telescopic fork adjustable preload, compression and rebound damping |
| 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 | Mono shock | Monoshock adjustable preload, bump and rebound |
| Front Brakes: | Drum | Drum | 2x 296mm discs | 2x 296mm discs 4 piston calipers | Single disc | 2x 300 mm Discs, 4 piston calipers |
| Rear Brakes: | Drum | Drum | 200mm drum | Single 220mm disc 1 piston caliper | Drum | Single 245mm disc, 2 piston caliper |
| Front Tyre: | 3.00 -21 | 3.00 -21 | 3.25H-19 | 120/70 ZR17 | 2.75-21 | 120/60-17 |
| Rear Tyre: | 150/80 -18 | 150/80 -18 | 4.00S-18 | 180/55 ZR17 | 4.60-17 | 160/60-17 |
| 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 | 18 Litres / 7.6 US gal | 19 Litres / 5.0 US gal / 4.2 Imp gal |