Kawasaki Zephyr 400 X (2001-03) vs Triumph Speed Triple T509 (1998) vs Ducati GT 1000 Classic (2007) vs Triumph Street Triple R (2014)
Comparison technical specifications
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| Make: | Kawasaki | Triumph | Ducati | Triumph |
| Model: | Zephyr 400 X | Speed Triple T509 | GT 1000 Classic | Street Triple R |
| Years: | 2001-03 | 1998 | 2007 | 2014 |
| Engine: | Four stroke parallel twin cylinder. DOHC, 4 valves per cylinder | Four stroke, transverse three cylinder, DOHC, 4 valve per cylinder. | Four stroke, 90° “L” twin cylinder, desmodromic 2 valves per cylinder, operated by four rocker arms (two opening rockers and 2 closing rockers) SOHC. Driven by the crankshaft through spur gears, timing belt pulleys and toothed timing belts | Four stroke, in-line 3-cylinder, DOHC, 12 valves |
| Capacity: | 399 cc / 24.4 cu-in | 885 cc / 54.0 cu-in | 992 cc / 60.5 cu in | 675 cc / 41.19 cu-in |
| Bore x Stroke: | 55 х 42 mm | 76 x 65 mm | 94 x 71.5 mm | 74 x 52.3 mm |
| Cooling System: | Air cooled | Liquid cooled | Air cooled | Liquid-cooled |
| Compression Ratio: | 10.3:1 | 10.0:1 | 10.0:1 | 12.65:1 |
| Induction: | 4X Keihin CVK30 carburetors | 41 mm Fuel injection | Marelli electronic fuel injection, 45mm throttle body | Multipoint sequential electronic fuel injection with forced air induction |
| Ignition: | Full transistor | Digital CDI | Marelli electronic | Digital - inductive type |
| Starting: | Electric | Electric | Electric | Electric |
| Max Power: | 49 hp / 36.8 kW @ 11000 rpm | 80.5 kW / 108 hp / @ 9000rpm | 61 kW / 81.8 hp @ 8,000 rpm | 79 kW / 107 hp @ 11700 rpm |
| Max Torque: | 3.1 kgf m / 22.4 lb-ft @ 10500 rpm | 84.0 Nm / 8.57 kgf-m / 62 ft-lb / @ 6,500rpm | 83 Nm / 61.2 lb-ft @ 6,000 rpm | 69 Nm / 7.0 kgf-m / 51 ft-lb @ 9100 rpm |
| Transmission: | 6 Speed | 6 Speed | 6 Speed | 6 Speed |
| Final Drive: | Chain | Chain | Chain, gear ration:15/39 | O-ring chain |
| Front Suspension: | Telescopic forks | 45 mm Upside-down forks, preload, dump and rebound adjustable | 43 mm Marzocchi upside down fork | 41mm Kayaba upside down forks, with adjustable preload, rebound and compression damping, |
| Rear Suspension: | Dual shocks | Monoshock, preload, dump and rebound adjustable. | Twin shock absorbers, spring preload | Kayaba monoshock with piggy back reservoir, adjustable for preload, rebound and compression damping, |
| Front Brakes: | 2x discs | 2 x 320 mm Discs, 4 piston calipers | 2x 320 mm Semi-floating discs, 4 piston calipers | 2 x 308mm Floating discs, Nissin4 piston radial calipers |
| Rear Brakes: | Single disc | Single 220 mm disc, 2 piston caliper | Single 245 mm disc, 2 piston caliper | Single 220 mm disc, 1 piston caliper |
| Front Tyre: | 110/80-17 | 120/70 ZR17 | 120/70 ZR17 | 120/80 ZR17 |
| Rear Tyre: | 140/70-18 | 190/50 ZR17 | 180/55 ZR17 | 180/55 ZR17 |
| Seat Height: | 770 mm / 30.1 in | 800 mm / 31.5 in | 825 mm / 32.5 in | 805 mm / 31.7 in |
| Fuel Capacity: | 14 Litres / 3.6 US gal | 18 Litres / 4.7 gal | 15 Litres / 4.0 US gal / 3.3 Imp gal | 17.4 Litres / 4.6 US gal / 3.8 Imp gal |