Kawasaki KH400 (1976) vs Kawasaki KR1 (1989) vs Kawasaki Ninja 650 (2014) vs Triumph Street Twin (2018) vs Yamaha WR 250Z (1997)
Comparison technical specifications
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| Make: | Kawasaki | Kawasaki | Kawasaki | Triumph | Yamaha |
| Model: | KH400 | KR1 | Ninja 650 | Street Twin | WR 250Z |
| Years: | 1976 | 1989 | 2014 | 2018 | 1997 |
| Engine: | Two stroke, transverse three cylinder, piston valve | Ttwo stroke, parallel twin cylinder | Four stroke, parallel twin cylinder. DOHC, 4 valves per cylinder. | Four stroke, 270° Crank angle parallel twin, SOHC, 8 valves | Two stroke, single cylinder |
| Capacity: | 400.4 cc / 24.4 cu-in | 249 cc / 15.2 cu-in | 649 cc / 39.65 cu /in | 900 cc / 54.9 cu in | 249 cc / 15.2 cu-in |
| Bore x Stroke: | 57 х 52.З mm | 56.0 x 50.6 mm | 83 x 60 mm | 84.6 x 80 mm | 68 x 68.8 mm |
| Cooling System: | Air cooled | Liquid cooled | Liquid cooled | Liquid cooled | Liquid cooled |
| Compression Ratio: | 6.5:1 | 7.4:1 | 11.3:1 | 10.55:1 | 10.9:1 |
| Induction: | 3x Mikuni VM26SC, Ø 26 mm carburetors | 2x 28mm Keihin PWK carburetor | 2x Keihin 38mm throttle bodies | Multipoint sequential electronic fuel injection | Mikuni VM38SS carburetor |
| Ignition: | Battery and coil | Capacitor discharge | TCBI with digital advance | Digital | CDI |
| Starting: | Kick | Kick | Electric | Electric | Kick |
| Max Power: | 38 hp / 28.3 kW @ 7000 rpm | 55 hp / 41.0 kW @ 10500 rpm | 53 kW / 72.1 hp @ 8,500 rpm | 40.5 kW / 55 hp @ 5900 rpm | 49.8 hp / 37.2 kW @ 8250 rpm |
| Max Torque: | 3.9 kgf-m / 28.2 lb-ft @ 6500 rpm | 3.75 kgf-m / 27.1 lb-ft @ 10500 rpm | 66 Nm / 6.7 kgf·m @ 7000 rpm | 80 Nm / 8.16 kgf-m / 59 ft-lb @ 3230 rpm | 4.69 kgf-m / 44.5 Nm @ 7500 rpm |
| Transmission: | 5 Speed | 6 Speed | 6 Speed | 5-Speed | 5 Speed |
| Final Drive: | Chain | Chain | O-ring chain | Chain, X-ring | Chain |
| Front Suspension: | Telescopic Hydraulic forks | 41mm stanchions, air assisted telescopic fork with unstopped preload adjustment | 41 mm hydraulic telescopic fork | Kayaba 41 mm fork | 43mm inverted fork |
| Rear Suspension: | Dual shocks, Swing arm | Bottom Link Uni-Trak with air adjustable gas shock, unstopped preload, and four-way rebound damping | Single offset laydown shock with adjustable spring preload, | Kayaba twin shocks with adjustable preload | Monocross, swinging arm |
| Front Brakes: | Single 250mm disc | 2x discs 4 piston calipers | 2x 300mm discs 2 piston calipers | Single 310mm disc, Nissin 2 piston floating caliper, ABS | Single 204mm disc |
| Rear Brakes: | 180mm Drum | Single disc 2 piston caliper | Single 220mm disc | Single 255mm disc, Nissin 2 piston floating caliper, ABS | Single 189mm disc |
| Front Tyre: | 3.25-18 | 100/70 VR17 | 120/70 -17 | 100/90-R18 | 80/100-21 |
| Rear Tyre: | 3.50-18 | 130/60 VR18 | 160/50 -17 | 150/70-R17 | 110/100-18 |
| Wheelbase: | 1364 mm / 53.7 in | 1365 mm / 53.7 in | 1410 mm / 55.5 in. | 1415 mm / 55.7 in | 1480 mm / 58.2 in |
| Dry Weight: | 162 kg / 357 lbs | 123 kg / 271 lbs | 177.8 kg / 393 lbs | 198 kg / 437 lbs | 103 kg / 227 lbs |
| Fuel Capacity: | 16 Litres / 4.2 US gal | 16 Litres / 4.2 US gal | 15.5 Litres / 4.1 gal | 12 L / 3.2 US gal / 2.7 Imp gal | 13 Litres / 3.4 US gal |