Positioned in Yamaha's naked motorcycle lineup, the 1983 Yamaha XJ 550 Maxim pairs a 528 cc (32.2 cu in) air-cooled in-line four, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 50 HP (36.5 kW) at 9,000 rpm while maximum torque reaches 41.9 Nm (30.9 lb-ft), transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 94.7 HP per liter, the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.
On the scales, the XJ 550 Maxim measures 185 kg (408 lbs) dry, translating to a power-to-weight ratio of 0.27 HP/kg (3.7 kg per horsepower). Rider ergonomics and chassis geometry center around a 790 mm (31.1 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance. The 13-liter (3.4 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 180 km/h (112 mph).
Specific Output
94.7 HP/L
Power-to-Weight
0.27 HP/kg (3.7 kg/HP)
Standover Height
790 mm (31.1 in)
Engine
Displacement528.0 ccm (32.22 cubic inches)
Engine TypeIn-line four, four-stroke
Power50.0 HP (36.5 kW)) @ 9000 RPM
Torque41.9 Nm (4.3 kgf-m or 30.9 ft.lbs)
Compression9.5:1
Bore x Stroke57.0 x 51.8 mm (2.2 x 2.0 inches)
Valves/Cylinder2
Fuel SystemCarburettor. 4 x 28mm Mikuni
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
IgnitionInductive
CoolingAir
Transmission
Gearbox6-speed
Final DriveChain (final drive)
Performance
Top Speed180.0 km/h (111.8 mph)
Chassis
Front SuspensionTelescopic coil spring forks
Front Travel137 mm (5.4 inches)
Rear SuspensionSwinging arm with dual dampers adjustable for preload
Rear Travel80 mm (3.1 inches)
Wheels & Brakes
Front Tyre3.25-19
Rear Tyre130/90-16
Front BrakesDouble disc
Front Brake Ø267 mm (10.5 inches)
Rear BrakesExpanding brake
Rear Brake Ø182 mm (7.2 inches)
Dimensions & Weight
Dry Weight185.0 kg (407.9 pounds)
Power/Weight0.2703 HP/kg
Seat Height790 mm (31.1 inches) If adjustable, lowest setting.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
