The Kawasaki GPX 250R (1990-1992) motorcycle had a four-stroke parallel twin engine with a 248 cc capacity and a cooling system of liquid-cooled. The bike had a tubular diamond design frame and a telescopic fork front suspension with a wheel travel of 140mm/5.5in and a UNI-TRAK single shock rear suspension with a wheel travel of 130mm/5.1in. The front and rear brakes were single 260mm and 230mm discs respectively. The bike had a 6-speed manual transmission and a wet, multi-disc, manual, cable-actuated clutch. Its top speed was 152.7 km/h (94.9 mph), and its standing quarter-mile time was 13.8 sec with a speed of 132.4 km/h. It had a seat height of 740 mm and a ground clearance of 150 mm. The bike had a dry weight of 138 kg / 304 lbs and a wet weight of 160 kg / 355 lbs. The fuel capacity was 18 liters / 4.7 US gallons, and the bike had a maximum power of 45 hp / 33.5 kW @ 11000 rpm and a maximum torque of 24 Nm / 17.7 lb-ft @ 10000 rpm. It was also known as the EX250 Ninja or the ZZR 250.
Technical specifications:
Make Model: Kawasaki GPX 250R / EX250 Ninja / ZZR 250
| Year | 1990 – 92 |
|---|---|
| Engine | Four stroke . parallel twin, DOHC , 4 valve per cylinder |
| Capacity | 248 cc / 15.2 cu-in |
| Bore x Stroke | 62 41.2mm |
| Cooling System | Liquid cooled |
| Compression Ratio | 12.4:1 |
| Induction | 2x Keihin CVK30 Constant velocity, diaphragm-type |
| Ignition | Electronic advance |
| Spark Plug | NGK CR8HSA, CR8HIX, CR8HVX option CR7HSA, CR7HIX |
| Starting | Electric |
| Max Power | 45 hp / 33.5 kW @ 11000 rpm |
| Max Torque | 24 Nm / 17.7 lb-ft @ 10000 rpm |
| Clutch | Wet, multi-disc, manual, cable-actuated |
| Transmission | 6 Speed |
| Final Drive | Chain |
| Frame | Tubular diamond design |
| Front Suspension | Telescopic forks |
| Front Wheel Travel | 140 mm / 5.5 in |
| Rear Suspension | UNI-TRAK single shock |
| Rear Wheel Travel | 130 mm / 5.1 in |
| Front Brakes | Single 260mm disc |
| Rear Brakes | Single 230mm disc |
| Front Tyre | 100/80-16 |
| Rear Tyre | 130/80-16 |
| Rake | 27 degrees |
| Trail | 84 mm / 3.3 in |
| Wheelbase | 1400 mm / 55.1 in |
| Seat Height | 740 mm / 29.3 in |
| Ground Clearance | 150 mm / 6.1 in |
| Dry Weight | 138 kg / 304 lbs |
| Wet Weight | 160 kg / 355 lbs |
| Fuel Capacity | 18 Litres / 4.7 US gal |
| Standing 1/4 Mile | 13.8 sec / 82.3 mph 132.4 km/h |
| Top Speed | 152.7 km/h / 94.9 mph |
