Yamaha XV 750E (1981-82) vs Yamaha DT 250 (1981) vs Yamaha WR 250Z (1997) vs Suzuki GSX-R 750 (2014)
Comparison technical specifications
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| Make: | Yamaha | Yamaha | Yamaha | Suzuki |
| Model: | XV 750E | DT 250 | WR 250Z | GSX-R 750 |
| Years: | 1981-82 | 1981 | 1997 | 2014 |
| Engine: | Four stroke, 75°-V-Twin cylinder, SOHC. 2 valve per cylinder. | Two stroke, single cylinder | Two stroke, single cylinder | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. |
| Capacity: | 748 cc / 45.6 cu-in | 246 cc / 15.0 cu-in | 249 cc / 15.2 cu-in | 749 c / 45.7 cub. in. |
| Bore x Stroke: | 83 x 69.2 mm | 70 x 64 mm | 68 x 68.8 mm | 70 x 48.7 mm |
| Cooling System: | Air cooled | Air cooled | Liquid cooled | Liquid. High capacity large trapezoidal-shaped radiator which includes compact cooling fan assembly designed for improved air flow. |
| Compression Ratio: | 8.7:1 | 6.8:1 | 10.9:1 | 12.5:1 |
| Induction: | 34mm Keihin carburetors | Single 28mm Mikuni VM28SS | Mikuni VM38SS carburetor | New 32 bit ECM features 1024 kilobytes of ROM for maximum engine performance working in conjunction with the new S-DMS engine management system |
| Ignition: | CDI | External-rotor magneto; CDI; six-volt battery | CDI | Digital DC-CDI |
| Starting: | Electric | Kick | Kick | Electric |
| Max Power: | 50.8 hp / 37.8 kW @ 7000 rpm | 17 hp 12.6 kW @ 6000 rpm | 49.8 hp / 37.2 kW @ 8250 rpm | 110.3 kW / 148 hp @ 12800 rpm |
| Max Torque: | 5.4 kgf-m / 64.7 Nm @ 5750 rpm | 20.7 Nm / 15.3 lb-ft @ 5500 rpm | 4.69 kgf-m / 44.5 Nm @ 7500 rpm | 86.3 Nm / 8.8 kgf-m / 64 ft-lb @ 11200 rpm |
| Transmission: | 5 Speed | 5 Speed | 5 Speed | 6 Speed, constant mesh |
| Final Drive: | Shaft | Chain | Chain | Chain, RK525ROZ5Y, 116 links |
| Front Suspension: | 37mm Showa leading axle. adjustment for air pressure and rebound damping | Oil-damped, coil-spring fork with forward-mounted axle and | 43mm inverted fork | Showa inverted 41 mm cartridge front forks fully adjustable for high and low speed compression, spring preload, and rebound damping |
| Front Wheel Travel: | 145 mm / 5.7 in | 195 mm / 7.6 in | 300 mm / 11.8 in | 120 mm / 4.7 in. |
| Rear Suspension: | Monoshock single damper, adjustment for air pressure and rebound damping | DeCarbon-type, nitrogen-charged mono-shock producing | Monocross, swinging arm | Showa 41mm aluminum alloy rear shock with a 16mm rod diameter are fully adjustable for high and low speed compression, spring preload and rebound damping |
| Rear Wheel Travel: | 87 mm / 3.4 in | 152 mm / 5.9 in | 315 mm / 12.4 in | 130 mm / 5.1 in. |
| Front Brakes: | 2x 267mm disc 2 piston calipers | Conical hub with drum brake | Single 204mm disc | 2 x 310 mm Discs, radial-mount opposed-four-piston Brembo 4 piston monoblock calipers |
| Rear Brakes: | Drum | Conical hub with rod-actuated drum brake | Single 189mm disc | Single 220 mm disc, Nissin single piston caliper |
| Front Tyre: | 3.50-19 | 3.00-21 | 80/100-21 | 120/70 ZR17 |
| Rear Tyre: | 120/90-18 | 4.00-18 | 110/100-18 | 180/55 ZR17 |
| Fuel Capacity: | 14.5 Litres / 3.8 US gal | 8.5 Litres / 2.2 gal | 13 Litres / 3.4 US gal | 17 Litres / 4.5 US gal / 3.7 Imp gal |