It is considered as one the very first street-legal racers, there had been a number of sports machines but the GSX-R750 was something else. It was a revolutionary motorcycle with specifications like over 100 hp power output, less than 180 kg dry mass, 55° leaning angle, lightweight alloy double-cradle perimeter frame, 18-inch wheels and streamlined design based on the factory Formula 1 and Endurance racers.
The air/oil-cooled motor had cylinder dimensions of 70,0 x 48,7 mm and had 29 mm flat slide carbs. In a racing trim (there was a tuning kit available for competitive racing) the GSX-R750 engine provided 130 bhp. The new high-tech engine was narrower than earlier inline-fours and materials like magnesium was used to keep the weight down to minimum. The GSX-R750 was basically a street-legal and detuned version of the works GS1000R racer. The flat slide carburetors gave faster response to the throttle compared to the vacuum carburetors. It also required the rider to be more gently with the throttle. There were no compromises, it was very quick in hands of a skillful rider but could be experienced as nervous and even dangerous.
The GSX-R750 entered the market in March 1985. There's not many bikes out there in mint condition, most of them are ridden very hard and seen their best days. Nevertheless the evolution of modern sports bikes started with the GSX-R750. It's a real classic.
Engine: Four stroke, four cylinder, DOHC, 4 valves per cylinder, horizontal in-line
Capacity: 749 c / 45.7 cub. in.
Bore x Stroke: 70 x 48.7 mm
Compression Ratio: 10.8:1
Induction: 4 x 38 mm Mikuni constant-vacuum carbs
Ignition / Starting: Computer controlled electronic ignition
Max Power: 84 kW / 116 hp @ 11000 rpm
Max Torque: 78 Nm / 7.9 kgf-m / 57.5 ft-lb @ 10000 rpm
Transmission / Drive: 6 Speed, constant mesh
Front Suspension: Upside-down telescopic fork. adjustable spring preload . 8-way damping 10-way compression
Rear Suspension: Full-floater Monoshock 4-way adjustable for preload rebound damping
Front Brakes: 2 x 310 mm discs, 4 piston calipers
Rear Brakes: 280 mm disc, 1 piston caliper
Front Tyre: 120/70 ZR17
Rear Tyre: 170/60 ZR17
Dry-Weight: 208 kg / 458.6 lbs
Fuel Capacity: 21 Litres / 5.5 US gal
Consumption average: 6.8 l/100 km / 14.8 km/l / 34.8 mpg
Standing ¼ Mile: 10.88 sec / 201.7 km/h / 125.3 mph
Top Speed: 247.3 km/h / 153.6 mph