Honda NSR 250SP MC21 (1991-92)

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The Honda NSR 250SP MC21 is a two-stroke motorcycle with a 249 cc V-twin engine, capable of 45 horsepower and 35 Nm of torque. It has a kick-start ignition system and a constant mesh 6-speed transmission with a chain final drive. The frame is made of aluminum tubing and the suspension consists of a 41mm telescopic front fork and a Pro-Link single shock swingarm in the rear. The brakes consist of two discs with 2-piston calipers in the front and a single disc with a 1-piston caliper in the rear. The motorcycle has a 23 degree 15 rake and 87 mm trail with a length of 1975 mm, a width of 655 mm, and a height of 1060 mm. The wheelbase is 1345 mm and the seat height is 770 mm. The dry weight is 132 kg while the wet weight is 151 kg with a 16 liter fuel capacity. This motorcycle was produced in 1991-92 and is known for its high performance on the road.

Technical specifications:

Make Model: Honda NSR 250SP MC21

Year: 1991 – 92


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 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
Related Links: Type I / Type II / Technical / nsr250.net
Road Test: Motosprint 1991

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