Positioned in Harley-Davidson's custom - cruiser motorcycle lineup, the 1999 Harley-Davidson Sportster 1200 Custom utilizes a 1200 cc (73.2 cu in) air-cooled v2, four-stroke layout. In factory specification, peak output is rated at 58 HP (42.3 kW) at 5,200 rpm while maximum torque reaches 88 Nm (64.9 lb-ft) at 4,000 rpm, transferring power to the rear wheel through a 5-speed gearbox and belt final drive. With a specific output of 48.3 HP per liter and a 1,200 rpm working window between peak torque (4,000 rpm) and peak power (5,200 rpm), the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.
On the scales, the Sportster 1200 Custom measures 223 kg (492 lbs) dry, translating to a power-to-weight ratio of 0.26 HP/kg (3.84 kg per horsepower). Rider ergonomics and chassis geometry center around a 734 mm (28.9 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,524 mm (60 in) wheelbase engineered for planted straight-line stability. The 12.5-liter (3.3 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 188 km/h (117 mph).
Within MotoLibrary's Harley-Davidson archive, this model family spans 11 indexed model years from 1996 to 2019, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
48.3 HP/L
Power-to-Weight
0.26 HP/kg (3.84 kg/HP)
Power Band Window
4,000–5,200 rpm
Standover Height
734 mm (28.9 in)
Engine
Displacement1200.0 ccm (73.22 cubic inches)
Engine TypeV2, four-stroke
Engine DetailsV2, four-stroke
Power58.0 HP (42.3 kW)) @ 5200 RPM
Torque88.0 Nm (9.0 kgf-m or 64.9 ft.lbs) @ 4000 RPM
Bore x Stroke88.9 x 96.5 mm (3.5 x 3.8 inches)
Fuel SystemCarburettor
CoolingAir
Transmission
Gearbox5-speed
Final DriveBelt (final drive)
ClutchMulti plate wet
Performance
Top Speed188.3 km/h (117.0 mph)
Chassis
Front Suspension39mm telescopic fork
Rear SuspensionDual shocks
Wheelbase1524 mm (60.0 inches)
Ground Clearance170 mm (6.7 inches)
Wheels & Brakes
Front Tyre100/90-19
Rear Tyre130/90-16
Front BrakesSingle disc. 4-piston caliper
Front Brake Ø292 mm (11.5 inches)
Rear BrakesSingle disc. 4-piston caliper
Rear Brake Ø292 mm (11.5 inches)
Dimensions & Weight
Dry Weight223.0 kg (491.6 pounds)
Power/Weight0.2601 HP/kg
Seat Height734 mm (28.9 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.
