Kawasaki ZX-6R Ninja (2021) vs Ducati 848 EVO Corse Special Edition (2012) vs Suzuki GSX-R 750WN (1992) vs Yamaha XSR 155 (2021) vs Norton Commando 750 Production Racer (1968-71)
Comparison technical specifications
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| Make: | Kawasaki | Ducati | Suzuki | Yamaha | Norton |
| Model: | ZX-6R Ninja | 848 EVO Corse Special Edition | GSX-R 750WN | XSR 155 | Commando 750 Production Racer |
| Years: | 2021 | 2012 | 1992 | 2021 | 1968-71 |
| Engine: | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder | Four stroke, 90°“L”twin cylinder, DOHC, desmodromic 4 valve per cylinder. | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. | Four stroke, single cylinder, SOHC, 4 valve with variable valve actuation | Parallel twin cylinder, 4-stroke, OHV |
| Capacity: | 636 cc / 38.8 cub in | 848 cc / 51.7 cu in | 749 c / 45.7 cub. in. | 155.1 cc / 9.14 cu-in | 745 cc / 45.5 cu in |
| Bore x Stroke: | 67.0 x 45.1mm | 94 x 61.2mm | 70 x 48.7 mm | 58.0 × 58.7 mm | 73 x 89 mm |
| Compression Ratio: | 12.9:1 | 13.2:1 | 11.8:1 | 11.6:1 | 10.25:1 |
| Cooling System: | Liquid cooled | Liquid cooled | Liquid cooled | Liquid cooled | Air cooled |
| Induction: | DFI with four 38mm Keihin throttle bodies and oval sub-throttles | Marelli electronic fuel injection, elliptical throttle bodies | 4 x 38 mm Mikuni BST38SS carburetors | Fuel Injection | 2 x Ø32 mm Amal GP carburetors |
| Ignition: | TCBI with digital advance | Digital CD | Computer controlled electronic ignition | TCI | Boyer electronic ignition |
| Starting: | Electric | Electric | Electric | Electric | Electric and kick |
| Max Power: | NA | 103 kW / 140 hp @ 10500 rpm | 88 kW / 118 hp @ 11500 rpm | 14.1 kW / 19 hp @ 10000 rpm | 52 kW / 70 hp @ 7000 rpm |
| Transmission: | 6 Speed | 6 Speed | 6 Speed, constant mesh | 6 Speed slip-and-assist clutch | 5 Speed Rod Quaife gearbox, close ratio |
| Final Drive: | 520 series X-ring chain | Chain; front sprocket 15; rear sprocket 39 | #530 Chain, O-ring sealed, 108 links | Chain | Chain |
| Front Suspension: | 41mm inverted Showa BP-SFF fork with top-out springs, stepless compression and rebound damping, adjustable spring preload | Showa 43mm fully adjustable upside-down fork | Showa 41 mm cartridge style upside-down forks, preload, compression and rebound adjustable | Upside-down Telescopic fork | Telescopic forks |
| Rear Suspension: | Bottom-link Uni-Trak with gas-charged shock, top-out spring and pillow ball upper mount, stepless compression damping, 25-way adjustable rebound damping, fully adjustable spring preload | Progressive linkage with fully adjustable Ohlins monoshock. Aluminium single-sided swingarm | Full floater, preload, compression and rebound adjustable | Monoshock operating on a die-cast aluminium swingarm | Dual shocks, swingarm |
| Front Brakes: | 2 x 310mm petal rotors with dual radial-mount, Nissin four-piston, monobloc calipers and available KIBS ABS | 2 x 330 mm Semi-floating discs, radially mounted Brembo Monobloc 4-piston calipers | 2 x 310 mm Discs, 4 piston Nissin calipers | Single 282mm disc 2 piston caliper, ABS | Drum later models Single disc |
| Rear Brakes: | Single 220mm petal rotor with single-piston caliper and KIBS ABS | Single 245 mm disc, 2 piston caliper | Single 240 mm disc, 2 piston Nissin caliper | Single 240mm disc 1 piston caliper, ABS | Drum |
| Fuel Capacity: | 17 Litres 4.5 US gal | 15.5 L / 4.1 US gal / 3.4 Imp gal | 21 Litres / 5.5 US US gal / 4.6 Imp gal | 10 Litres / 2.6 US gal | 22.7 L / 6 US gal |