Yamaha IT 250 (1980-81) vs Kawasaki ZX-6R Ninja (2020) vs Suzuki SV 650N (2003-04) vs Suzuki GSX 250E (1981)
Comparison technical specifications
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| Make: | Yamaha | Kawasaki | Suzuki | Suzuki |
| Model: | IT 250 | ZX-6R Ninja | SV 650N | GSX 250E |
| Years: | 1980-81 | 2020 | 2003-04 | 1981 |
| Engine: | Two stroke, single cylinder, read valve | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder | Four stroke, 90°-V-twin, DOHC, 4 valves per cylinder | Four stroke, parallel twin cylinder, DOHC, 4 valves per cylinder |
| Capacity: | 246 cc / 15.07 cu-in | 636 cc / 38.8 cub in | 645 cc / 39.4 cu-in | 249 cc / 15.2 cu in |
| Bore x Stroke: | 70 x 64 mm | 67.0 x 45.1mm | 81 x 62.6 mm | 60 х 44.2 mm |
| Cooling System: | Air cooled | Liquid cooled | Liquid cooled | Air cooled |
| Compression Ratio: | 9.8;1 | 12.9:1 | 11.5:1 | 10.5:1 |
| Induction: | 30mm Mikunis carburetor | DFI with four 38mm Keihin throttle bodies and oval sub-throttles | 2x Mikuni BDSR39 carburetors | 2 x 30mm Mikuni BS30SS carburetors |
| Ignition: | CDI | TCBI with digital advance | Digital transistorized | Electronic |
| Starting: | Kick | Electric | Electric | Electric |
| Max Power: | 32.2 hp @ 7500 rpm | NA | 53 kW / 72 hp @ 9000 rpm | 21.6 kW / 29 hp @ 10000 rpm (dyno: 12 kW / 16.1 hp @ 10000 rpm) |
| Max Torque: | 22.6 / 3.12 kg-m @ 7500 rpm | NA | 64 Nm / 6.53 kg-m / 47.2 lb-ft @ 7200 rpm | 21.6 Nm / 2.2 kgf-m / 15.9 lb-ft @ 8000 rpm (dyno: 12.3 Nm / 1.25 kgf / 9.1 lb-ft @ 8500 rpm) |
| Transmission: | 6 Speed | 6 Speed | 6 Speed | 6 Speed |
| Final Drive: | Chain | 520 series X-ring chain | Chain | Chain |
| Front Suspension: | Air-assisted, oil-damped fork | 41mm inverted Showa BP-SFF fork with top-out springs, stepless compression and rebound damping, adjustable spring preload | Telescopic, coil spring, oil damped, fully adjustable preload | Telescopic forks |
| Rear Suspension: | Aluminum-bodied monoshock with adjustable damping and preload producing | 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 | Link-type, 7-way adjustable spring preload | Swinging arm, dual dampers, 5-way spring preload |
| Front Brakes: | Drum 130 x 22mm shoes | 2 x 310mm petal rotors with dual radial-mount, Nissin four-piston, monobloc calipers and available KIBS ABS | 2 x 290 mm Discs, 2 piston calipers | Single 275mm disc |
| Rear Brakes: | Drum 150 x 25mm shoes | Single 220mm petal rotor with single-piston caliper and KIBS ABS | Single 240 mm disc, 2 piston caliper | Drum |
| Front Tyre: | 90/90 -21 | 120/70 ZR17 | 120/60 ZR17 | 3.60-18 |
| Rear Tyre: | 12/90 -18 | 180/55 ZR17 | 160/60 ZR17 | 4.10-18 |
| Fuel Capacity: | 13 Litres / 3.4 US gal | 17 Litres 4.5 US gal | 17 Litres / 4.5 US gal / 3.7 Imp gal | 12 Litres / 3.2 US gal / 2.6 Imp gal |