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Sport · 1990

GSX-R 750

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MotoLibrary Score
59 /100 Balanced
Power
112 HP
Engine
749 ccm

1990 Suzuki GSX-R 750 Technical Analysis & Specification Breakdown

Engineered by Suzuki for the sport motorcycle segment, the 1990 Suzuki GSX-R 750 utilizes a 749 cc (45.7 cu in) air-cooled in-line four, four-stroke layout. In factory specification, peak output is rated at 112 HP (81.8 kW) at 11,000 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 149.5 HP per liter, the engine character is placing it firmly in high-revving supersport territory where top-end breathing dominates.

On the scales, the GSX-R 750 measures 234 kg (516 lbs) wet (curb), translating to a power-to-weight ratio of 0.48 HP/kg (2.09 kg per horsepower). The 21-liter (5.5 US gal) fuel tank supports practical everyday commuting and weekend road stints.

Within MotoLibrary's Suzuki archive, this model family spans 20 indexed model years from 1985 to 2007, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.

Specific Output
149.5 HP/L
Power-to-Weight
0.48 HP/kg (2.09 kg/HP)
Engine
Displacement 749.0 ccm (45.70 cubic inches)
Engine Type In-line four, four-stroke
Engine Details In-line four, four-stroke
Power 112.0 HP (81.8 kW)) @ 11000 RPM
Compression 10.9:1
Bore x Stroke 70.0 x 48.7 mm (2.8 x 1.9 inches)
Valves/Cylinder 4
Fuel Control Double Overhead Cams/Twin Cam (DOHC)
Cooling Air
Transmission
Gearbox 6-speed
Final Drive Chain (final drive)
Wheels & Brakes
Front Tyre 120/70-17
Rear Tyre 170/60-17
Front Brakes Dual disc
Rear Brakes Single disc
Dimensions & Weight
Weight incl. 234.0 kg (515.9 pounds)
Fuel Capacity 21.00 litres (5.55 US gallons)
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