The Yamaha XJ 550J Maxim is a motorcycle that was produced in 1982. It has a four-stroke, transverse four-cylinder engine with DOHC and 2 valves per cylinder. The capacity of the engine is 528cc or 32.2 cubic inches, with a bore of 57mm and stroke of 51.8mm. The motorcycle is air-cooled and has a compression ratio of 9.5:1 with 4x 28mm Mikuni carburetors for induction. The battery-powered inductive ignition system allows for easy electric starting. The motorcycle can produce a maximum power of 37 kW or 50 PS at 9000 rpm, and a maximum torque of 41.9 Nm or 4.3 m-kg at 7500 rpm. It has a 6-speed transmission and a chain final drive. The front suspension is telescopic coil spring forks with a wheel travel of 137mm or 5.3in, and the rear suspension is a swinging arm with dual dampers that are adjustable for preload with a wheel travel of 80mm or 3.7in. The front brakes consist of 2x 267mm discs, and the rear brakes consist of a 182mm drum. The front and rear tires are 3.25-19 and 130/90-16, respectively. The dry weight of the motorcycle is 185 kg or 407.8 lbs and it has a fuel capacity of 13 litres or 3.4 US gallons. The average fuel consumption is 55 mpg. The standing 1/4 mile time is 13.3 seconds with a speed of 97 mph, and it has a top speed of 180 km/h or 112 mph.
Technical specifications:
Make Model: Yamaha XJ 550J Maxim
| Year | 1982 |
|---|---|
| Engine | Four stroke, transverse four cylinder. DOHC, 2 valves per cylinder. |
| Capacity | 528 cc / 32.2 cu-in |
| Bore x Stroke | 57 X 51.8 mm |
| Cooling System | Air cooled |
| Compression Ratio | 9.5:1 |
| Induction | 4x 28mm Mikuni carburetors |
| Ignition | Battery powered inductive |
| Starting | Electric |
| Max Power | 37 kW / 50 PS @ 9000 rpm |
| Max Torque | 41.9 Nm / 4,3 m-kg @ 7500 rpm |
| Transmission | 6 Speed |
| Final Drive | Chain |
| Front Suspension | Telescopic coil spring forks |
| Front Wheel Travel | 137 mm / 5.3 in |
| Rear Suspension | Swinging arm with dual dampers adjustable for preload |
| Rear Wheel Travel | 80 mm / 3.7 in |
| Front Brakes | 2x 267mm discs |
| Rear Brakes | 182mm Drum |
| Front Tyre | 3.25-19 |
| Rear Tyre | 130/ 90-16 |
| Dry Weight | 185 kg / 407.8 lbs |
| Fuel Capacity | 13 Litres / 3.4 US gal |
| Consumption Average | 55 mpg |
| Standing 1/4 Mile | 13.3 sec / 97 mph |
| Top Speed | 180 km/h / 112 mph |
