While the Suzuki GSX-R750 engine was air-cooled and oil-cooled, the Suzuki GSX-R250 had a liquid-cooled engine. Most sales of this bike were made in Japan, it is difficult to find outside the Asian country. In the front train mounted 17-inch wheels and 300mm double brake discs.
The Suzuki GSX-R250 1990 had a welded aluminum twin tube frame, 18-inch rear wheel and larger front brakes. The Suzuki GSX-R250 1990 SP version (pure street-legal racing model) had even full adjustable suspension etc.
New graphics for the Suzuki GSX-R250 1990.
Suzuki GSX-R250 1990 Specifications
Colors
Solid Black and Gold
Dimensions and dry mass
Overall Length: 2000 mm (78.7 inches)
Overall Width: 700 mm (27.6 inches)
Overall Height: 1105 mm (43.5 inches)
Seat Height: 770 mm (30.3 inches)
Wheelbase: 1370 mm (53.9 inches)
Ground clearance: 125 mm (4.9 inches)
Dry mass: 138 kg (304.2 lbs)
Engine
Engine Type: Four-stroke, water-cooled, DOHC
Number of cylinders: 4
Bore: 49 mm (1.929 in) x 33 mm
Stroke: 33 mm (1.299 in)
Piston displacement: 248 cc (15.1 cu. in)
Compression Ratio: 12.5:1
Carburetor: Mikuni BSW 27
Claimed Horsepower: 45 hp (33.6 kW) @ 15000 rpm
Maximum Torque: 24 Nm (17.7 ft. lbs) @ 10500 rpm
Starte system: Electric
Air cleaner: Polyurethane foam element
Transmission
Clutch: Wet multi-plate type
Transmission type: 6-speed constant mesh
Gearshift pattern: 1-down, 5-up
Primary reduction Ratio: 2.285 (80/35)
Gear Ratios: 1st 3.454 (38/11), 2nd 2.266 (34/15), 3th 1.750 (28/16), 4th 1.450 (29/20), 5th 1.250 (30/24), 6th 1.150 (23/20)
Final reduction ratio: Chain, 3.615 (47/13)
Chassis
Frame: Steel box type
Front Suspension: Telescopic, coil sping, oil damped
Rear Suspension: Full floating suspension system, oil damped, spirng preload 7-way adjustable
Caster: 64º
Trail: 103 mm (4.1 inches)
Steering angle: 35º
Turning radius: 2.8m (9.2ft)
Front Brake: Dual 275 mm discs with 2-piston calipers
Rear Brake: Single 210 mm disc with 1-piston calipers
Front Tire: 100/80-17 52H
Rear Tire: 130/70-17 62H
Electrical
Ignition Type: Full transistorized
Spark plug: NGK C8A or Nippon Denso U24FUS-U
Battery: 12V 32.4 kC(9Ah)/10HR
Generator: Three-phase A.C. generator
Fuse: 20A
Headlight: 12V 35/35W
Turn signal light: 12v 23w
Trail/Brake light: 12V 5/21W
Speedometer light: 12V 3.4W
Tachometer light: 12V 3.4W
Neutral indicator light: 12V 3.4W
High beam indicator light: 12V 1.7W
Turn signal indicator light: 12V 3.4W
Oil pressure indicator light: 12V 3.4W
Capacities
Fuel tank, including reserve: 14 l (3.7 gal)
reserve: 2.4 L (0.6 gal)
Engine oil, with filter change: 2300ml (2.4 qt)
without filter change: 2000ml (2.1 qt)
overhaul: 2600ml (2.7 qt)
