At the heart of the 1970 Harley-Davidson XR 750 cross - motocross motorcycle, Harley-Davidson features a 748 cc (45.6 cu in) air-cooled twin, four-stroke configuration. In factory specification, peak output is rated at 81.8 HP (59.7 kW) at 7,700 rpm. With a specific output of 109.4 HP per liter, 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 XR 750 measures 134 kg (295 lbs) dry, translating to a power-to-weight ratio of 0.61 HP/kg (1.64 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, combined with a 1,441 mm (56.7 in) wheelbase engineered for balanced agility and highway composure. The 9.5-liter (2.5 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 185 km/h (115 mph).
Specific Output
109.4 HP/L
Power-to-Weight
0.61 HP/kg (1.64 kg/HP)
Standover Height
790 mm (31.1 in)
Engine
Displacement748.0 ccm (45.64 cubic inches)
Engine TypeTwin, four-stroke
Power81.8 HP (59.7 kW)) @ 7700 RPM
Bore x Stroke79.0 x 81.0 mm (3.1 x 3.2 inches)
Fuel SystemCarburettor. Mikuni 36mm
Fuel ControlOverhead Valves (OHV)
CoolingAir
Performance
Top Speed185.1 km/h (115.0 mph)
Chassis
Frame TypeTwin Loop Full Cradle
Rake26.0°
Trail87 mm (3.4 inches)
Front SuspensionCeriani Telescopic Fork
Rear Suspension2xGirling Shocks
Wheelbase1441 mm (56.7 inches)
Wheels & Brakes
Front Tyre4-19
Rear Tyre4-19
Dimensions & Weight
Dry Weight134.0 kg (295.4 pounds)
Power/Weight0.6104 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
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Seat Height
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Weight
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Fuel Capacity
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Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
