1989 Honda NSR 250R-SP MC18-II

Make Model	Honda NSR 250R-SP MC18-II
Year	1989
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 1980 mm / 77.9 in Width 650 mm / 25.5 in Height 1060 mm / 41.7 in
Wheelbase	1345 mm / 52.9 in
Seat Height	790 mm / 31.1 in
Ground Clearance	135 mm / 5.3 in
Dry Weight	131 kg / 288.8 lbs
Wet Weight	149 kg / 328.4 lbs
Fuel Capacity	16 Litres / 4.2 US gal
Review	Type I / Type II / Technical / nsr250.net

The 1989 NSR model went on sale February 10, 1989 for 608,000 Yen. The NSR was again updated but still classified a MC18 in Japan. Version 2 or the R5K for the standard R type NSR's, This time the all new MC18 got new bodywork, higher set silencers, new rear suspension, revised PGM II intake system, wider radial tires and for the third straight year saw the same fighting red and white colors, along with Terra blue colors and a slight variation with the red accented seat cowl. New colors in Black and gun metal grey debuted as well. Due to a large number of traffic accidents involving motorcycles. All NSR 250's were speed restricted from 1989. The option of the SP with lighter magnesium wheels, newly introduced dry clutch and all new colors was available for the price of 689,000 Yen. The SP model was sold in the Terra racing colors ( NSR racing sponsor ) of silver and white with green accents The 1989 SP model also had fully adjustable front forks ( preload and rebound ) compared to the to regular R type which was adjustable for preload only. Also a whole new fully adjustable rear shock with reservoir. 1989 was also the first year for the dry clutch on street SP models. These NSR's were classified the R6K