At the heart of the 1986 Yamaha XJ 750 Maxim X sport touring motorcycle, Yamaha features a 749 cc (45.7 cu in) liquid-cooled four cylinder boxer, four-stroke configuration. In factory specification, peak output is rated at 90 HP (65.7 kW) at 9,000 rpm while maximum torque reaches 72.5 Nm (53.5 lb-ft) at 8,000 rpm, transferring power to the rear wheel through a 5-speed gearbox and shaft drive (cardan) final drive. With a specific output of 120.2 HP per liter and a 1,000 rpm working window between peak torque (8,000 rpm) and peak power (9,000 rpm), the engine character is reflecting a performance-oriented street tune that balances strong mid-range pull with an energetic top-end rush.
On the scales, the XJ 750 Maxim X measures 232 kg (511 lbs) wet (curb), translating to a power-to-weight ratio of 0.39 HP/kg (2.58 kg per horsepower). Rider ergonomics and chassis geometry center around a 760 mm (29.9 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,520 mm (59.8 in) wheelbase engineered for balanced agility and highway composure. The 13-liter (3.4 US gal) fuel tank paired with a rated consumption of 5.7 L/100 km provides an estimated theoretical range of roughly 228 km (142 miles) between fill-ups, while factory top speed is listed at 187 km/h (116 mph).
Specific Output
120.2 HP/L
Power-to-Weight
0.39 HP/kg (2.58 kg/HP)
Power Band Window
8,000–9,000 rpm
Theoretical Range
~228 km (142 mi)
Engine
Displacement749.0 ccm (45.70 cubic inches)
Engine TypeFour cylinder boxer, four-stroke
Engine DetailsFour cylinder boxer, four-stroke
Power90.0 HP (65.7 kW)) @ 9000 RPM
Torque72.5 Nm (7.4 kgf-m or 53.5 ft.lbs) @ 8000 RPM
Compression11.2:1
Bore x Stroke68.0 x 51.6 mm (2.7 x 2.0 inches)
Valves/Cylinder5
Fuel SystemCarburettor. (4) Standard BS33mm Mikuni CV
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
IgnitionTCI
LubricationWet sump
CoolingLiquid
Max RPM8000
Transmission
Gearbox5-speed
Final DriveShaft drive (cardan) (final drive)
ClutchWet, multidisc
Performance
Top Speed186.9 km/h (116.1 mph)
0-400m11.66 seconds
0-100 km/h3.20 seconds
Fuel Consumption5.70 litres/100 km (17.5 km/l or 41.27 mpg)
Greenhouse Gases132.2 CO2 g/km. (CO2 - Carbon dioxide emission)
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.
