| MODEL | SUZUKI GSX-R 750 2004 |
| Year | 2004 |
| Engine Type | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder |
| Displacement / Capacity | 749 cc / 45.7 cu in |
| Bore X Stroke | 72 x 46 mm |
| Compression Ratio | 12.3:1 |
| Cooling System | — |
| Max Power | 106.6 kW / 145 hp @ 12800 rpm |
| Max Torque | 86.3 Nm / 8.8 kgf-m / 64 ft-lb @ 11200 rpm |
| Ignition | Digital DC-CDI |
| Induction | Fuel injection, 46 mm throttle bodies |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | Wet sump |
| Gear Box | 6 Speed, constant mesh |
| Clutch | Wet, multiple discs |
| Final Drive | #525 Chain, O-ring sealed, 108 links |
| CHASSIS SPECS | |
| Frame | Conventional twin-beam aluminium construction |
| Front Suspension | Inverted Showa cartridge-type fork with 43 mm inner tubes, fully adjustable damping and spring preload |
| Rear Suspension | Showa link-type, gas/oil damped, fully adjustable spring preload and compression damping, 4-way adjustable rebound damping |
| Front Brakes | 2 x 300 mm discs, Tokico 4 piston calipers |
| Rear Brakes | Single 220 mm disc, Tokico 2 piston caliper |
| DIMENSION SPECS | |
| Overall Length | 2075 mm / 81.7 in |
| Overall Width | 715 mm / 28.1 in |
| Overall Height | 1145 mm / 45.1 in |
| Seat Height | 825 mm / 32.5 in |
| Wheelbase | 1396 mm / 55 in |
| Ground Clearance | 128 mm / 5.0 in |
| Dry Weight | 163 kg / 359 lbs |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 120/70 ZR17 |
| Rear Tyre | 180/55 ZR17 |
| FUEL SYSTEM | |
| Fuel Capacity | 17 Litres / 4.5 US gal |
| Fuel Consumption | — |
| Top Speed | 299 km/h / 186 mph (electronically limited) |
The K4 was a thorough refinement with titanium valves, a faster 32-bit engine computer, new bodywork and radial-mounted four-piston Tokico front brakes. Claimed power rose to about 145 hp and dry weight fell to 163 kg. A magazine review called it the only three-quarter-litre pure sportbike on sale at the time.
