Kawasaki Z 400 (1974-75) vs BMW K 1200R (2008-10) vs Triumph T120R Bonneville 650 (1966-67) vs Kawasaki Z 400LTD (1979-80) vs Triumph Sprint ST 1050 (2007)
Comparison technical specifications
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| Make: | Kawasaki | BMW | Triumph | Kawasaki | Triumph |
| Model: | Z 400 | K 1200R | T120R Bonneville 650 | Z 400LTD | Sprint ST 1050 |
| Years: | 1974-75 | 2008-10 | 1966-67 | 1979-80 | 2007 |
| Engine: | Four stroke, parallel twin cylinder, SOHC, 2 Valve per cylinder. | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder | Four stroke, parallel twin, OHV | Four stroke, parallel twin cylinder, SOHC, 2 Valve per cylinder. | Four stroke, transverse three cylinder. DOHC, 4 valves per cylinder |
| Capacity: | 398 cc / 24.2 cu-in | 1157 cc / 70.6 cu in | 649 cc / 39.6 cu in | 398 cc / 24.2 cu-in | 1050 cc / 64.1 cu in |
| Bore x Stroke: | 64 х 62 mm | 79 X 59 mm | 71 x 82 mm | 64 х 62 mm | 79 x 71.4 mm |
| Compression Ratio: | 9.4:1 | 13.0:1 | 8.5:1 | 9.4:1 | 12.0:1 |
| Cooling System: | Air cooled | Liquid cooled | Air cooled | Air cooled | Liquid cooled |
| Induction: | Keihin CVB3 6caburetor | Injection | 2 x Amal 1 - 1/6" carburetors | 2x Keihin CV32 6caburetor | Multipoint sequential electronic fuel injection |
| Ignition: | Battery & coil | Electronic | Lucas MA6 alternator with 2 coils | Battery & coil | Digital CDI |
| Starting: | Electric & kick | Electric | Kick | Electric & kick | Electric |
| Max Power: | 36 hp / 26.8 kW @ 8500 rpm | 120 kW / 161 hp @ 10250 rpm | 34 kW / 46 hp @ 6500 rpm | 36 hp / 26.8 kW @ 8500 rpm | 90 kW 123 hp @ 9250 rpm |
| Transmission: | 5 Speed | 6 Speed | 4 Speed, constant mesh | 5 Speed | 6 Speed |
| Final Drive: | Chain | Shaft | Chain, 106 links | Chain | Chain |
| Frame: | Tubular, double cradle | Bridging frame, die-cast aluminium, load bearing engine | Single front downtube, second bracing member running under tank | Tubular, double cradle | Aluminum beam perimeter |
| Front Suspension: | Telescopic fork | BMW Motorrad Duolever; central spring strut, rebound damping electronically adjustable with optional ESA | Telescopic forks, hydraulic damping | Telescopic forks | 45 mm Forks with dual rate springs and adjustable preload |
| Rear Suspension: | Swing arm | Die-cast aluminium single-sided swinging arm with BMW Motorrad Paralever; central spring strut with lever system, spring pre-load adjustable to continuously variable levels by means of hydraulic handwheel (electronically adjustable with optional ESA), adjustable rebound damping (rebound damping and compression electronically adjustable with optional ESA) | Swingarm, twin Girling dampers | Dual shocks | Monoshock with adjustable preload, compression and rebound damping |
| Front Brakes: | Single 226mm disc | 2 x ∅320mm discs, 4 piston calipers | 8" SLS drum | Single disc | 2 x 320 mm Discs, 4 piston calipers |
| Rear Brakes: | 180mm Drum | Single ∅265mm disc | 7" SLS drum | Drum | Single 255 mm disc, 2 piston caliper |
| Front Tyre: | 3.25 - S18 4PR | 120/70-17 | 3.25 x 19, Dunlop Universal | 3.25-18 | 120/70 ZR17 |
| Rear Tyre: | 3.50 - SIB 4PR | 180/55-17 | 4.00 x 18, Dunlop Universal | 130/90-16 | 180/55 ZR17 |
| Dry Weight: | 175 kg / 386 lbs | 237 kg / 522 lbs | 165 kg / 363 lbs | 170 kg / 374.7 lbs | 210 kg / 462 lbs (ABS model: 213kg / 469 lbs) |
| Fuel Capacity: | 14 Litres / 3.6 US gal | 19 L / 5.0 US gal | US: 13.6 L / 3.6 US gal / 3 Imp gal / UK and other Export: 18 L / 4.8 US gal / 4 Imp gal | 12 Litres / 3.1 US gal | 20 Litres / 5.3 US gal / 4.4 Imp gal |