Yamaha XJ550 Maxim (1982)

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

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