Honda NSR 250R MC18-II (1989)

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The Honda NSR 250R MC18-II is a two-stroke motorcycle with a 249cc V-twin cylinder engine that has a compression ratio of 7.3:1. It uses a TA20 carburetor type and a separate pump for lubrication. The maximum power output is 45 horsepower at 9500 rpm, while the maximum torque is 35 Nm at 8500 rpm. It has a multi-plate clutch and a constant mesh 6-speed transmission with a chain final drive. The frame is made of aluminum tube and it has a front suspension of 41mm telescopic air valve semi-adjustable and a rear suspension of Pro-Link single shock swingarm non-adjustable. The front brakes are two discs with two piston calipers and the rear brake is a single disc with a one piston caliper. It has a rake of 23 degrees 15 and a trail of 87 mm. The dry weight is 131 kg and the wet weight is 149 kg. It has a fuel capacity of 16 liters and a ground clearance of 135 mm.

Technical specifications:

Make Model: Honda NSR 250R MC18-II

Year: 1989


Engine: Two stroke, 90 degreesV-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 degrees15
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
Related Links: Type I / Type II / Technical / nsr250.net

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