Kawasaki KH400 (1977) vs Triumph Speedmaster Roadster (2009-10) vs Kawasaki Ninja 300 300 Special Edition (2014) vs Yamaha XVS 650 Drag Star Classic (1998-02)
Comparison technical specifications
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| Make: | Kawasaki | Triumph | Kawasaki | Yamaha |
| Model: | KH400 | Speedmaster Roadster | Ninja 300 300 Special Edition | XVS 650 Drag Star Classic |
| Years: | 1977 | 2009-10 | 2014 | 1998-02 |
| Engine: | Two stroke, transverse three cylinder, piston valve | Four stroke, parallel twin, DOHC, 4 valves per cylinder | Four stroke . parallel twin, DOHC, 4 valves per cylinder | Four stroke, 75°V-twin cylinder, SOHC, 2 valve per cylinder |
| Capacity: | 400.4 cc / 24.4 cu-in | 865 cc / 52.8 cu in | 296 cc / 18.0 cu-in | 649 cc / 39.6 cu-in |
| Bore x Stroke: | 57 х 52.З mm | 90 x 68 mm | 62 x 49 mm | 81 x 63 mm |
| Cooling System: | Air cooled | Air cooled | Liquid cooled | Air cooled |
| Compression Ratio: | 6.5:1 | 9.2:1 | 10.6:1 | 9.0:1 |
| Induction: | 3x Mikuni VM26SC, Ø 26 mm carburetors | Multipoint sequential electronic fuel injection with SAI | Fuel injection: ø32 mm x 2 (Keihin), with dual throttle valves | 28mm Mikuni downdraft-type carburetor |
| Ignition: | CDI | Digital inductive type | TCBI with Digital Advance | Digital TCI |
| Starting: | KICK | Electric | Electric | Electric |
| Max Power: | 38 hp / 28.3 kW @ 7000 rpm | 45.5 kW / 61 hp @ 6800 rpm | 29.0 kW / 39 hp @ 11000 rpm | 40 hp / 29.2 kW @ 6500 rpm |
| Max Torque: | 3.9 kgf-m / 28.2 lb-ft @ 6500 rpm | 74.5 Nm / 7.6 kgf-m / 55 ft.-lb @ 3300 rpm | 27.0 Nm / 2.8 kg-fm @ 10000 rpm | 50.9 Nm / 37 lb-ft @ 3000 rpm |
| Transmission: | 5 Speed | 5 Speed | 6 Speed | 5 Speed |
| Final Drive: | Chain | Chain | Chain | Shaft |
| Front Suspension: | Telescopic Hydraulic forks | 41mm Telescopic forks | 37 mm Telescopic fork, | Telescopic fork |
| Rear Suspension: | Dual shocks, Swing arm | Chromed spring twin shocks with adjustable preload | Bottom-Link Uni-Trak with gas-charged shock and 5-way adjustable preload, | Swingarm Monocross |
| Front Brakes: | Single 250mm disc | 2 x 310 mm Discs, 2 piston calipers | Single 290 mm petal disc Single balanced actuation dual-piston | Single 298mm disc 2 piston calipers |
| Rear Brakes: | 180mm Drum | Single 285 mm disc, 2 piston caliper | Single 220 mm petal disc Caliper: Dual-piston | 200mm drum |
| Front Tyre: | 3.25-18 | 110/80-18 | 110/70-17 M/C 54S | 130/90-18 |
| Rear Tyre: | 3.50-18 | 170/80-15 | 140/70-17 M/C 66S | 170/80-15 |
| Fuel Capacity: | 16 Litres / 4.2 US gal | 16.6 Litres / 4.4 US gal / 3.65 Imp gal | 17 Litres / 3.8 US gal | 16 Litres / 4.2 US gal |