199 Honda NSR 250R MC21

Make Model	Honda NSR 250R MC21
Year	1990
Engine	Two stroke, 90°V-twin cylinder, reed valve/exhaust valve
Capacity	249 c / 15.2 cu-in
Bore x Stroke	54 x 54.5 mm
Cooling System	Liquid cooled
Compression Ratio	7.3 : 1
Induction	TA20 Carburetor Type
Lubrication	Seperate Pump (engine) splash type (transmission)
Ignition	PGM-CDI
Starting	Kick
Max Power	45 hp / 32.8 kW @ 9500 rpm
Max Torque	35 Nm / 25.8 ft-lb @ 8500 rpm
Clutch	Multi-plate, coil spring
Transmission	Constant Mesh 6-speed
Final Drive	Chain
Gear Ratio	1st: 2.642 / 2nd: 1.800 / 3rd: 1.380 / 4th: 1.125 / 5th: 1.000 / 6th: 0.916
Frame	Aluminum tube type frame
Front Suspension	41mm Telescopic air valve semi-adjustable
Rear Suspension	Rear: Pro-Link Single shock swingarm non-adjustable
Front Brakes	2x discs 2 piston calipers
Rear Brakes	Single disc 1 piston caliper
Front Tyre	110/70-17 53 H
Rear Tyre	150/60-R18 67 H
Rake	23°15’
Trail	87 mm / 3.4 in
Dimensions	Length 1975 mm / 77.7 in Width 655 mm / 25.7 in Height 1060 mm / 41.7 in
Wheelbase	1345 mm / 52.9 in
Seat Height	770 mm / 30.3 in
Ground Clearance	135 mm / 5.3 in
Dry Weight	132 kg / 291.8 lbs
Wet Weight	151 kg / 337 lbs
Fuel Capacity	16 Litres / 4.2 US gal
Review	Type I / Type II / Technical / nsr250.net

The 1990 NSR's that went on sale from February 13, 1990. These bikes were code named MC21 from the factory and were completely new and different in every way from the earlier NSR's. New everything, gullarm suspension, more exciting bodywork, PGM III intake system, 17 inch wheels with sportier rubber and different colors. Available colors for the 1990 models were red and white with blue accents, blue and white with yellow accents, also black and red with grey accents. These were the standard R type colors and were priced at 609,000 Yen. The option of the SP was available too with it's Cabin racing colors in red, silver, gold and black.