The GSX-R750 is a 750 class sport bike motorcycle from Suzuki

Suzuki

is a Japanese multinational corporation headquartered in Hamamatsu, Japan that specializes in manufacturing compact automobiles and 4x4 vehicles, a full range of motorcycles, all-terrain vehicles , outboard marine engines, wheelchairs and a variety of other small internal combustion engines...

's GSX-R series

Suzuki GSX-R Series

The Suzuki GSX-R series, or Maruti GSX-R for India, is the top-of-the-line series of sport bikes made by Japanese manufacturer Suzuki. The series currently offers the following motorcycles:* GSX-R600 1992–1993, since 1997* GSX-R750 since 1985...

 of motorcycles. It was introduced in 1985 and can be considered to be the first of the modern racer-replicas with many race-derived technologies and the looks of a Suzuki Endurance racer at an affordable price.

Air-cooled and oil-cooled

The oil-cooled models can be further divided into the first generation and second generation oil-cooled models. They are informally referred to as slabbies (slang) and slingshots respectively. The 85-87 models featured body work which is very flat compared to modern sport-bikes, hence slab-side. The '88-91 (92 USA) models are sometimes referred to as slingshots because the carburetors introduced in 1988 were marketed as slingshot carburetors (slingshot describes the cross section of the semi-flat slide carbs).

GSX-R750 (F) 1985

The original model featured a lightweight aluminum alloy frame, flatslide carbs, twin discs with 4-pot calipers and 460 millimetres (18.1 in) tires both front and rear. The unusual choice of an oil-cooled engine was made to save weight as compared with the heavier water-cooled engines of the time.

Engine Type: 16-valve, 4-stroke, DOHC in-line four

Power: 106.00 HP (79.04 kW) @ 10500 RPM

Torque: 73 N.m

Metre

The metre , symbol m, is the base unit of length in the International System of Units . Originally intended to be one ten-millionth of the distance from the Earth's equator to the North Pole , its definition has been periodically refined to reflect growing knowledge of metrology...

 (53.8 ft. lbs.) @ 10000 RPM

Displacement: 749 cc (45.71 cubic inches)

Compression: 9.8:1

Bore x Stroke: 70.0 mm x 48.7 mm (2.8in x 1.9in)

Fuel System: Carburetion

Ignition: Full transistor

Cooling System: Air-Cooled

Gearbox: 6-speed (1 down, 5 up)

Final Drive: Chain

Dry Weight: 176 kilograms (388 lb)

Seat Height: 755 mm (29.7 in)

Overall Height: 1,200 mm (47.2 in)

Overall Length: 2,130 mm (83.9 in)

Overall Width: 620 mm (24.4 in)

Ground Clearance: 140 mm (5.5 in)

Wheelbase: 1,425 mm (56.1 in)

Front Tire: 110/80-18

Rear Tire: 140/70-18

Front Brakes: Hydraulic twin disc with dual opposed piston calipers

Rear Brakes: Single disc, hydraulic

Fuel Capacity: 19 liters (5.02 gallons)

GSX-R750 (G) 1986

The 1986 received a 25 mm longer swing arm to help calm the handling. Apart from a modified belly pan and upgraded headlamps there is very little difference between the 1985 and 1986 models. This is the first year the model was introduced to the USA.

Engine Type: 16-valve, 4-stroke, DOHC in-line four

Power: 106.00 HP (79.04 kW) @ 10500 RPM

Torque: 73 N.m

Metre

The metre , symbol m, is the base unit of length in the International System of Units . Originally intended to be one ten-millionth of the distance from the Earth's equator to the North Pole , its definition has been periodically refined to reflect growing knowledge of metrology...

 (53.8 ft. lbs.) @ 10000 RPM

Displacement: 749.00 cc (45.70 cubic inches)

Compression: 9.8:1

Bore x Stroke: 70.0 x 48.7 mm (2.8 x 1.9 inches)

Fuel System: Carburetion

Ignition: Full Transistor

Cooling System: Air/oil-cooled

Gearbox: 6-speed (1 down, 5 up)

Final Drive: Chain

Dry Weight: 176 kilograms (388 lb)

Seat Height: 755 mm (29.7 in)

Overall Height: 1,200 mm (47.2 in)

Overall Length: 2,130 mm (83.9 in)

Overall Width: 620 mm (24.4 in)

Ground Clearance: 140 mm (5.5 in)

Wheelbase: 1,425 mm (56.1 in)

Front Tire: 110/80-18

Rear Tire: 140/70-18

Front Brakes: Hydraulic twin disc with dual opposed piston calipers

Rear Brakes: Single disc, hydraulic

Fuel Capacity: 19 liters (5.02 gallons)

GSX-R750R 1986

Racing homologation Limited Edition model, limited production.
Including a dry clutch system, alloy tank, solo seat rear section bodywork and Limited Edition graphics.

GSX-R750 (H) 1987

The 1987 model received upgraded 41 mm front forks with NEAS (New Electrically Activated Suspension) from the previous year's RR and a steering damper was fitted as standard. A larger 21 liter fuel tank was added.

Engine Type: 16-valve, 4-stroke, DOHC in-line four

Power: 106.00 HP (79.04 kW) @10500 RPM

Torque: 73 N.m

Metre

The metre , symbol m, is the base unit of length in the International System of Units . Originally intended to be one ten-millionth of the distance from the Earth's equator to the North Pole , its definition has been periodically refined to reflect growing knowledge of metrology...

(53.8 ft. lbs.) @ 10000 RPM

Displacement: 749.00 cc (45.70 cubic inches)

Compression: 9.8:1

Bore x Stroke: 70.0 x 48.7 mm (2.8 x 1.9 inches)

Fuel System: Carburetion

Ignition: Full Transistor

Cooling System: Air-Cooled

Gearbox: 6-speed (1 down, 5 up)

Final Drive: Chain

Dry Weight: 176 kilograms (388 lb)

Seat Height: 755 mm (29.7 in)

Overall Height: 1,200 mm (47.2 in)

Overall Length: 2,130 mm (83.9 in)

Overall Width: 620 mm (24.4 in)

Ground Clearance: 140 mm (5.5 in)

Wheelbase: 1,425 mm (56.1 in)

Front Tire: 110/80-18

Rear Tire: 140/70-18

Front Brakes: Hydraulic twin disc with dual opposed piston calipers

Rear Brakes: Single disc, hydraulic

Fuel Capacity:21 liters (5.54 gallons)

GSX-R750 (J) 1988

First major revision. New chassis design, engine revisions and body work. Introduction of a new short-stroke version of the oil-cooled engine, now displacing 748 cc. Engine had 73 mm bore and 44.7 mm stoke and could achieve higher engine speeds (13,000 rpm redline indicated, but rev limited engaged at 12,500 according to the Suzuki shop manual). Internal engine dimensions changed to accommodate the new bore and stroke. This engine used larger valves and carburetors than previous years. Mikuni model BST36SS carbs were 36 mm diameter and featured vacuum operated slides. The slide cross section resembled the shape of a slingshot. A four spring clutch was used on the short stroke motor
. New styling, and twin black silencers. Wheels were now a 17 inches (431.8 mm) diameter, three spoke design and used a 160/60VR17 in the rear and 120/70VR17 in the front. Slingshot graphic first appeared on the bodywork. Forks now used a cartridge design and were 43 mm in diameter. The second generation model was heavier than the first but had a stiffer frame and more power.

Engine Type: 16-valve, 4-stroke, DOHC in-line four

Power: 112.00 HP (83.52 kW)) @ 11000 RPM

Torque: 74.4 N.m (54.9 ft. lbs.) @ 1 0000 RPM

Displacement: 748 cc (45.64 cubic inches)

Compression: 10.9:1

Bore x Stroke: 73.0 x 44.7 mm (2.9 x 1.8 inches)

Fuel System: Carburetion

Ignition: Digital/Transistorized

Cooling System: Air-Cooled

Gearbox: 6-speed (1 down, 5 up)

Final Drive: Chain

Dry Weight: 195 kilograms (429.9 lb)

Seat Height: 830 mm (32.7 in.)

Overall Height: 1135 mm (44.7 in.)

Overall Length: 2055 mm (80.9 in.)

Overall Width: 720 mm (28.3 in.)

Ground Clearance: 130 mm (5.1 in.)

Wheelbase: 1400 mm (55.1 in.)

Front Tire: 120/70 VR-17

Rear Tire: 160/60 VR-17

Front Brakes: 320 mm dual hydraulic disc

Rear Brakes: 220 mm single hydraulic disc

Fuel Capacity: 5.54 gallons

GSX-R750 (K) 1989

Minor changes such as: modified lower bodywork, changes to graphics and silver exhaust silencers. Magazines reported that the exhaust manifold now featured small chamfers on the collector for increased ground clearance. Cycle magazines also reported a change to the rear shock mounting geometry and front fork length to improve ground clearance. Graphics/paint schemes varied slightly between global markets. US models were available in blue/white and red/white schemes. The SACS acronym decal, located on the lower body work of the blue/white models, changed from a diagonal lettering to a straight lettering.

GSX-R750R 1989

Limited edition racing homologation model. The redesigned engine reverted to the original long stroke (70 x 48.7 mm) configuration. The crankcase, crankshaft connecting rods and clutch were upgraded to serve as a ready to race platform. The RR also received new 40 mm Slingshot carbs and 4-into-1 exhaust pipe, close ratio gearbox, braced rear swing arm, single seat unit and 19L aluminium fuel tank. Model was never sold in the US.

GSX-R750 (L) 1990

Although this model looks very similar to the previous '89 model many changes were made. The 90 model featured changes to the engine, suspension, body work, brakes and chassis. This was the first GSX-R to be fitted with inverted forks as standard (USA models retained the conventional forks until 1991), and returned to the bore and stroke dimension of the original long-stroke engine.

The engine returned to the 749 cc engine bore and stroke dimensions of the original long-stroke engine but still maintained the 13,000 rpm redline. It now featured mm valve (smaller than the 88-89 short stroke but larger than the 85-87) and used larger carburetors. The new Mikuni model BST38SS carburetors were 38 mm diameter and featured an additional high-speed circuit (circuit was blocked in USA models) and the slide breathers were now divorced from air box. The exhaust system was also changed, gone were the dual silencers and replaced with one stainless steel silencer on the right side. The transmission output shaft was lengthened to accommodate a wider wheel. A new curved oil-cooler design and oil lines (attached to the oil pan similar to the original 85-87 engines) were installed.

The frame was changed for 90 and used some of the features from the '89 GSX-R 1100 frame. The rake was now 25.5 degrees and wheelbase 55.7 inches (1,414.8 mm). The front suspension now had inverted forks, the triple clamps (yokes) and handlebars were changed to accommodate the new forks. The rear suspension featured a new damper (shock) and swingarm. The rear damper (shock) now had a remote reservoir and damping adjustment. The revised swingarm now featured cast ends for the axle adjustment. The rear wheel was widened to 5.5 inches (139.7 mm) (previously 4.5 inches (114.3 mm)) but the tire size remained the same. A non-adjustable steering damper was added which attached from the left frame rail to a clamp on the left fork (US models did not receive the damper but the frame had the tapped mounting holes). The rear sprocket carrier and sprocket changed to a six-bolt design (previously five). The front brake rotors changed to a slotted design (previously cross drilled holes).

The body work changed slightly also. The side vents became less rectangular and in a slightly different position. Anew fender was also used with the inverted forks (except US).

GSX-R750 (M) 1991

The '91 GSX-R750M gained 15 kg over the previous model. The most notable feature of the "M" are the faired in headlamps and a slanted nose, both of which were designed to reduce drag. Also fitted was a new larger seat and new rear body work that featured twin tail lamps. This was the last GSX-R to use the oil-cooled SACS engine (except for US). Internal engine changes included a new valvetrain that used one dedicated cam lobe and rocker arm (finger follower) per valve (previous models used one lobe and one forked rocker per two valves). Valve clearance (lash) was now adjusted with shims (previous models used a screw and nut). The cam duration and indexing changed slightly as well as the porting according to a magazine article. The rear tire width was increased to a 170 mm section width. The gauges also changed to white colored needles (previously amber colored).

GSX-R750 (N) 1992

1992 US models are the same as the 1991 with different paint and graphics. All other markets got the new water-cooled GSX-R 750.

GSX-R750 (WN) 1992

New water-cooled engine and revised frame, bodywork and suspension. USA market models retained the oil-cooled engine and the USA 1992 model is basically the same as the 91 model with different graphics. A sleeved down version was available as the GSXR-600 for 92 and 93, both years were available with inverted forks. Interestingly, the 1992 GSXR-600 was water-cooled for the US market while the 750 had to wait one more year.

GSX-R750 (WP) 1993

Mostly cosmetic changes, minor revision of engine internals, minor increase in power.

GSX-R750 (WR) 1994

Reduced power and weight on last years model. The inverted forks for this year were blue annodized.

GSX-R750 SPR 1994-1995

A limited-edition racing homologation model and was available for two years. Factory parts included wide-mouthed TRM40 carbs, close-ratio gearbox, magnesium engine covers, ally water pump, six-piston brake calipers and a new braced swingarm, holding a wider 180-rear-section tyre. The SPR was also around 10 kilos lighter than the WP.

GSX-R750 (WS) 1995

Last model to use the double-cradle frame. Increased power and weight and over last years model. The US model was essentially the SPR model in terms of technical specs. Inverted forks were clear annodized for 95. Frame was reinforced for more stiffness over the 94 model year and the top fairing was all new with lighter, twin reflector beam headlights. Touted by Motorcyclist as having the most ground clearance leaned over, just behind a 916.

SRAD

Suzuki Ram Air Direct.

Meaning there are air intakes at the front that force air directly into the airbox. All models as of 1996 have employed this design.

GSX-R750 (T) 1996

The '96 GSX-R introduced a new twin-spar frame which was derived from Suzuki's RGV 500 GP racer. A new compact and lightweight engine incorporated magnesium covers on the cylinder head, starter motor and clutch cover to aid weight reduction. These changes resulted in a decrease in weight by 20 kg to 179 kg, while power had increased to a 118 bhp. This year's model finally addressed the weight problems that had plagued the GSX-R through the first half of the 90s.

Other features included electronically controlled carburetors and 43 mm inverted forks which were fully adjustable. Also 17in rear rim was fitted as std with a 190/50-17 size tire as fitted to all model from 1996 to 1999.

GSX-R750 (X) 1999

Only minor modifications were carried out on the 1998 model consisting of new graphics. Rear wheel rim increased to 6 inches and stock rear tire width increased to 190 only for this year. The 1999 Model year GSX-R won the sportbike of the year award, produced 134 Crank Horsepower, and was the last year of the known "SRAD" design.

GSX-R750 Y - 2000

All New Model covering 2000 through 2003 -Lighter Stronger Faster: Sometimes called superman bike because of headlight shape.

Engine:
Much smaller yet stronger motor, upgraded fuel injection, redesigned narrower cylinder head with straighter intake tracts, bigger air box, better ram air, stainless steel 4 into 1 exhaust, lighter stronger engine components and covers, increased cooling capacity.

Body:
More aerodynamic bodywork, smaller frontal area, redesigned instrument cluster, new LCD information (odometer, coolant temperature, clock).

Frame:
New re-designed twin spar frame, extended swingarm, lighter front brakes to reduce un-sprung mass, lighter cast wheels to reduce rotating mass.

GSX-R750 K2 - 2002

Few minor tweaks for 2002:
Changes to the EFI, new adjustable swingarm, new mirrors, and new fully brushed exhaust.

GSX-R750 K3 - 2003

Colors changed. First year that bikes have lights on 24 hrs (UK).
Redesign year (Not UK).

GSX-R750 K4 - 2004

Refined version of the 00-03 model years. ECU now 32 bit, from 16 bit, titanium valves, new body work, black powdercoated frame and swingarm, and radial brakes.

749.00 cc (45.70 cubic inches) Dual overhead cam, 4 valves per cylinder In-line 4.

Compression:	12.3:1
Bore x stroke:	72.0 x 46.0 mm (2.8 x 1.8 inches)
Fuel delivery:	Electronic Injection
Cooling system:	Liquid
Power:	147 hp claimed power at crank shaft; 127.3 hp at 12,750 rpm rear wheel hp tested by bike magazine on uncertified dynamometer
Torque:	79 N.m (58.2 ft.lbf) @ 10,750 rpm
Gearbox:	6-speed
Final drive:	6 speed, chain drive
Dry weight:	163.0 kg (359.4 pounds)
Seat height:	825 mm (32.5 inches) If adjustable, lowest setting.
Wheelbase:	1,396 mm (55.0 inches)
Overall length:	2,075 mm (81.7 inches)
Fuel capacity:	17 l (35.9 US pt)
Front suspension:	Inverted telescopic, coil spring, fully adjustable spring preload, rebound and compression damping
Rear suspension:	Link-type, gas/oil damped, fully adjustable spring preload, compression and rebound damping
Front tire dimensions:	120/70-ZR17
Rear tire dimensions:	180/55-ZR17
Front brakes:	Double disc
Rear brakes:	Single disc
Color options:	Blue/White, Yellow/Gray, Silver/Red/Black

GSX-R750 K5 - 2005

Besides changing color on the motorcycle, suzuki celebrated their 20th anniversary by launching the suzuki 20th anniversary gsxr 750, which included a custom paint, custom exhaust and sunex brake rotors.... Ek blue chain, blue seat and 20th anniversary placards

GSX-R750 - 2006-07

Redesign year. New frame and swingarm and motor. Stroke increased and transmission is now stacked. Rotors also went from 300 mm to 310 mm.

Model:	Suzuki GSX-R 750
Year:	2006
Category:	Sport
Price as new (MSRP):	US$ 9,999 Prices depend on country, taxes, accessories, etc.
Displacement:	749 cc (45.70 cubic inches)
Engine type:	In-line four, four-stroke
Horsepower:	150 hp (110.3 kW)/ 13,200 rpm, 86.3 Nm / 11.200 rpm.
Torque:	55 ft·lbf (64 N·m) @ 10,500 rpm
Compression:	12.5:1
Bore x stroke:	70.0 x 48.7 mm (2.8 x 1.9 inches)
Fuel system:	Injection. Fuel Injection
Fuel control:	DOHC
Ignition:	Digital/transistorized
Lubrication system:	Wet Sump
Cooling system:	Liquid
Gearbox:	6-speed
Transmission type, final drive:	Chain
Clutch:	Wet multiple plate coil springs
Front suspension:	Inverted telescopic, coil spring, fully adjustable spring preload, rebound and compression damping
Rear suspension:	Link-type, gas/oil damped, fully adjustable spring preload, compression and rebound damping
Front tire dimensions:	120/70-ZR17
Rear tire dimensions:	180/55-ZR17
Front brakes:	Double disc
Rear brakes:	Single disc
Dry weight:	163.0 kg (359.4 pounds)
Seat height:	810 mm (31.9 inches) If adjustable, lowest setting.
Overall height:	1,125 mm (44.3 inches)
Overall length:	2,040 mm (80.3 inches)
Overall width:	715 mm (28.1 inches)
Wheelbase:	1,400 mm (55.1 inches)
Fuel capacity:	17.00 litres (4.49 gallons)
Color options:	White/Blue, Red/Black, Yellow/Black

Other specifications
Modifications compared to previous model: All new compact and lightweight 4-stroke, 4-cylinder, liquid-cooled engine designed for overall weight reduction, optimum combustion efficiency and power delivery Re-designed cylinder head with narrower valve angles creating a more compact combustion chamber design, higher 12.5:1 compression ratio, large intake and exhaust ports for improved intake and exhaust efficiency and high power output Valve bucket diameters are increased to work with more aggressive camshafts Lightweight titanium valves with steel alloy springs and aluminum spring retainers operated by thin-wall hollow camshafts to reduce weight and inertia

GSX-R750 K8/K9/L0 (2008/2009/2010)

new model - revised headlights, new colors, multi-mode power adjustments

Engine:	750 cc four-cylinder
Power:	147.8 bhp at 13,200 rpm (claimed flywheel brake hp)
Torque:	47 ft.lbf @ 11,200 rpm
Transmission:	6 speed, chain drive
Weight:	167 kg (368.2 lb)
Seat height:	810 mm
Fuel capacity:	17 l (35.9 US pt)

GSX-R750 2011

New model, clean and sleek body style, new headlight, addition of Italian made Brembo brake calipers. The 2011 model is about 9 kilograms (19.8 lb) lighter than the previous year's model. It has a "back torque limiting" clutch that allows for slicker downshifting. Lightweight Showa Big-Piston front fork comes standard along with a Showa rear shock. Features a more compacted instrument panel which was inspired by the GSX-R1000 instrument panel.

External links

• GSX-R History Official site (global)
• GSX-R history Official site (UK)