Triumph Rocket 3 R Black (2021) vs Kawasaki ZX-12R Ninja (2002) vs Kawasaki GPz 900 Ninja / ZX900R Ninja (1991-96) vs Kawasaki GPz 550 / Z 550GP (1983-84) vs Kawasaki VN 1500 Vulcan (1991-94)
Comparison technical specifications
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| Make: | Triumph | Kawasaki | Kawasaki | Kawasaki | Kawasaki |
| Model: | Rocket 3 R Black | ZX-12R Ninja | GPz 900 Ninja / ZX900R Ninja | GPz 550 / Z 550GP | VN 1500 Vulcan |
| Years: | 2021 | 2002 | 1991-96 | 1983-84 | 1991-94 |
| Engine: | Four stroke, inline 3-cylinder, DOHC | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. | Four stroke, transverse four cylinder, DOHC, 2 valve per cylinder. | Four stroke, 50° V-Twin, SOHC, 4 valves per cylinder |
| Capacity: | 2458 cc / 150 cub in | 1199 cc / 73.1 cu-in | 908 cc / 55.4 cu-in | 553 cc / 33.7 cu-in | 1470 cc / 89.7 cu-in |
| Bore x Stroke: | 110.2 x 85.9 mm | 83 x 55.4 mm | 72.5 x 55 mm | 58 x 52.4 mm | 102 x 90 mm |
| Cooling System: | Liquid cooled | Liquid cooled | Liquid cooled | Air cooled | Liquid cooled |
| Compression Ratio: | 10.8:1 | 12.2:1 | 11.0:1 | 10.0:1 | 8.8:1 |
| Induction: | Ride-by-Wire, fuel injected | Electronic fuel injection | 4x 34mm Keihin CVK34 carburettors | 4x 22mm Teikei constant vacuum - main jets #94 | 2x Keihin CV 40mm carburetor |
| Ignition: | Digital inductive type via electronic engine management | Digital ignition | Battery ignition, full electronic! | CDI | CDI |
| Starting: | Electric | Electric | Electric | Electric | Electric |
| Max Power: | 123 kW / 165 hp @ 6000 rpm | 178 hp / 131 kW @ 10500 rpm | 108 hp / 80.5 kW @ 9500 rpm | 65 hp / 47.4 Nm @ 9000 rpm | 60.9 hp / 44.5 kW @ 4300 rpm |
| Max Torque: | 221 Nm / 163 ft-lb @ 4000 rpm | 134 Nm / 13.66 kgf-m @ 7500 rpm | 8.7 kgf-m / 62.9 lb-ft @ 8500 rpm | 35.5 lb-ft / 48.1 Nm @ 8000 rpm | 117.6 Nm / 12 kg-m @ 3300 rpm |
| Transmission: | 6 Speed | 6 Speed | 6 Speed | 6 Speed | 4 Speed |
| Final Drive: | Shaft, bevel box | Chain | Chain | #530 O-ring chain | Shaft |
| Front Suspension: | Showa 47mm upside-down 1+1 cartridge front forks, compression and rebound adjuster | 43mm upside-down cartridge fork with adjustable preload, 12-way rebound and 12-way compression damping. | 41mm Telescopic forks, air assisted four way anti dive. | Telescopic forks | Centre axle forks with 41mm tubes, 150mm wheel travel |
| Rear Suspension: | Fully adjustable Showa piggyback reservoir RSU with remote hydraulic preload adjuster | Bottom-Link with gas-charged shock: piggy-back reservoir, adjustable spring preload, 18-way rebound and 20-way compression damping | Uni-Trak air assisted, single shock, 4-way adjustable damping. | Dual shocks, Swinging arm | Dual shock absorbers adjustable for spring preload, 100mm wheel travel. |
| Front Brakes: | 2x 320 mm discs with Brembo M4.30 Stylema 4-piston radial monobloc calipers | 2x 320mm discs 6 piston calipers | 2x 300mm discs 4 piston calipers | 2X 260mm disc | Single disc 1 piston caliper |
| Rear Brakes: | Single 300mm disc, Brembo M4.32 4-piston monobloc caliper | Single 230mm disc 2 piston caliper | Single 250mm disc 2 piston caliper | Single 260mm disc | Single disc 1 piston caliper |
| Front Tyre: | 150/80 R17 V | 120/70 ZR17 | 120/70-17 | 3.25 H19 | 100/90-19 |
| Rear Tyre: | 240/50 R16 V | 200/50 ZR17 | 150/70-18 | 3.75 H18 | 150/90-15 |
| Seat Height: | 773 mm / 30.4 in | 820 mm / 32.3 in | 790 mm / 31.1 in | 800 mm / 31.6 in | 750 mm / 29.5 in |
| Fuel Capacity: | 18 Litres / 4.76 US gal | 20 Litres / 5.0 gal | 22 Litres / 5.8 US gal | 15 Litres / 3.9 US gal | 16 Litres / 4.2 US gal |