The Kawasaki GPz 500S / EX 500R Ninja was a motorcycle model produced between 1987 and 88. It was powered by a liquid-cooled, four-stroke, parallel twin-cylinder engine, with a capacity of 498cc and a compression ratio of 10.8:1. The engine was equipped with a wet sump lubrication system and paired with a six-speed transmission, which drove the rear wheel through a chain drive. The bike’s frame was made of iron and featured a double cradle design.
The front suspension comprised 38mm telescopic forks, and the rear suspension was a swinging arm with a single shock that was adjustable for spring preload. The front brakes were a single 270mm disc with a dual-piston caliper, and the rear brakes were a 160mm drum. The bike’s wheelbase measured 1435mm, and it had a dry weight of 170kg.
The Kawasaki GPz 500S / EX 500R Ninja had a maximum power output of 60hp at 9800rpm, and a maximum torque of 46.1Nm at 8500rpm. It had a top speed of 197.9km/h and could travel 12.5 seconds over a quarter-mile. The bike had a fuel capacity of 15.9 liters and was capable of achieving an average consumption of 18.2 km/l. Its braking distance from 60 to 0 and 100 to 0 was 14.6 meters and 39.9 meters, respectively.
Technical specifications:
Make Model: Kawasaki GPz 500S / EX 500R Ninja
| Year | 1987 – 88 |
|---|---|
| Engine | Four stroke, parallel twin cylinders. DOHC, 4 valves per cylinder. |
| Capacity | 498 cc / 30.4 cu-in |
| Bore x Stroke | 74 x 58 mm |
| Cooling System | Liquid cooled, |
| Compression Ratio | 10.8:1 |
| Lubrication | Wet sump |
| Engine Oil | Semi-Synthetic, 10W/40 |
| Induction | 2x Keihin CVK34 carburetor |
| Ignition | TCI (Transistor Controlled Ignition) |
| Spark Plug | NGK, DR9EA |
| Starting | Electric |
| Max Power | 60 hp / 43.7 kW @ 9800 rpm |
| Max Power Rear Tyre | 54.7 hp @ 9500 rpm |
| Max Torque | 46.1 Nm / 4.7 kg-m @ 8500 rpm |
| Clutch | Wet, multiple discs, cable operated |
| Transmission | 6 Speed |
| Final Drive | Chain |
| Frame | Iron, Double cradle frame |
| Front Suspension | 38mm Telescopic forks |
| Front Wheel Travel | 130 mm / 5.1 in |
| Rear Suspension | Swinging arm, single shock adjustable for spring preload |
| Rear Wheel Travel | 100 mm / 3.9 in |
| Front Brakes | Single 270mm disc 2 piston caliper |
| Rear Brakes | 160mm drum |
| Front Tyre | 100/90-16 |
| Rear Tyre | 120/90-16 |
| Rake | 63 degrees |
| Trail | 91 mm / 3.5 in |
| Dimensions | Length 2110 mm / 83 in Width 685 mm / 27.0 in Height: 1160 mm / 45.6 in |
| Wheelbase | 1435 mm / 56.5 in |
| Seat Height | 770 mm / 30.0 in |
| Dry Weight | 170 kg / 370 lbs |
| Wet Weight | 200 kg / 441 lbs |
| Fuel Capacity | 15.9 Litres / 4.2 US gal |
| Consumption Average | 18.2 km/lit |
| Braking 60 – 0 / 100 – 0 | 14.6 m / 39.9 n |
| Standing 1/4 Mile | 12.5 sec / 164.8 km/h |
| Top Speed | 197.9 km/h / 122.9 mph |
