Suzuki GSX750ES

Make Model	Suzuki GSX 750ES
Year	1986 - 87
Engine	Four stroke, transverse four cylinders, DOHC, 4 valve per cylinder.
Capacity	747 cc / 45.5 cu-in
Bore x Stroke	67 x 53 mm
Cooled System	Air/Oil cooled
Compression Ratio	9.6:1
Lubrication	Wet sump
Induction	4 x Mikuni 32 mm carburetors
Ignition	Transistorized
Headlight type	55/60W H4 halogen
Starting	Electric
Max Power	69.2 kW / 86 hp @ 9500 rpm
Max Torque	68 Nm / 6.9 kgf-m / 50.2 lb-ft @ 8500 rpm
Clutch	Wet multiple plates, coil spring
Transmission	5 Speed
Final Drive	#530 Chain
Primary Drive Ratio	1.895 :1
Final Drive Ratio	3.071 :1
Gear Ratio	1st 2.50 / 2nd 1.75 / 3rd 1.37 / 4th 1.13 / 5th 0.96
Frame	Steel pipe and profile cradle
Front Suspension	Telescopic fork, preload adjustable and hydraulic anti-dive.
Front Wheel Travel	150 mm / 5.9 in
Rear Suspension	Full floater, preload and 4-way rebound damping adjustable.
Rear Wheel Travel	107 mm / 4.2 in
Front Brakes	2 x 275mm Discs, 2 piston calipers
Rear Brakes	Single 255mm disc, 1 piston caliper
Front Wheel	Cast alloy wheel, 2.15 x 16
Rear Wheel	Cast alloy wheel, 2.50 x 17
Front Tyre	100/90-16, Bridgestone L303
Rear Tyre	120/90-17, Bridgestone G514
Rake	27.8°
Trail	105 mm / 4.13 in
Dimensions	Length: 2 155 mm / 84.8 in Width: 765 mm / 30.1 in Height: 1 260 mm / 49.6 in
Wheelbase	1480 mm / 58.3 in
Seat Height	780 mm / 30. in
Ground Clearance	155 mm / 6.1 in
Dry Weight	210 kg / 462 lbs
Fuel Capacity	19.5 Litres / 5.1 US gal / 4.3 Imp gal
Consumption Average	4.9 L/100 km / 20.4km/l / 48 US mpg / 57.6 Imp mpg
Standing ¼ Mile	12.0 sec / 174 km/h / 108 mph
Top Speed	217.2 km/h / 135 mph

The GSX750ES, introduced in 1983 (called GSX750E in Japan), was based on the naked GSX750E. Like its naked borther, the GSX750ES got the air and oil-cooled 16-valve engine with 84 hp (72 ps in Japan). The new GSX750 line was the smallest, lightest and smoothest of Suzuki's 750cc machines so far. Almost everything on the bike was new, including the cylinder head and the frame.

The new 747cc engine shared only the cylinder measurements with its precessor (63 mm bore, 53 mm stroke. It weigh 16,8 kg (37 lbs) less than the '82 GSX750 engine. Even the exhaust system was made 5,3 kg (11,7 lbs) lighter. The new engine was even shorter, narrower and lower than its precessor.

The maximum power output had increased from 81 to 86 hp by enlargening the valves, increasing the compression ratio and re-designing the cam shafts, exhaust system and the air filter box. Comparing with modern engines, the GSX750ES engine don't impress with its low-rev torque, but the older version of the engine had even less torque.

The GSX750ES had a 16-inch front wheel (100/90-16) for quicker steering and a 17-inch rear wheel (120/90-17). The craddle type frame was welded using steel pipes and profiles and the light alloy rear swing was an oil-damped Full-floater. An top fairing was mounted on the ES model.

The GSX750ES proved to be a fantastic bike for its time. It was sporty, fast and practical. It was easy to manouvre and good for speeds over 200 kph. In many countries it was the best-selling Suzuki in 1983. In Sweden it was actually the best selling bike of the year.