Honda NSR 125F (1991)

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The Honda NSR 125F-II was produced in 1991 and featured a two-stroke, single-cylinder engine with a displacement of 124.8 cc. It had a bore and stroke of 54 x 54 mm and was cooled by liquid. The engine had a compression ratio of 12.0:1 and was fed by a Dell’Orto PHBH 28 FS carburetor. The ignition was capacitor discharge electronic and it had both an electric and kick-start. The bike delivered a maximum power of 31 hp at 10,500 rpm and a maximum torque of 20.85 Nm at 9,000 rpm. A 6-speed transmission and a chain final drive were included. The frame was a double-cradle tubular steel construction and it used Marzocchi telescopic forks on the front and Marzocchi shock with Pro-Kink adjustable preload on the rear. Braking was provided by a single 316mm disc with a 2-piston caliper at the front and a single 220mm disc with a 1-piston caliper on the rear. The front and rear wheels had 100/80-17 and 130/70-18 tires, respectively. The bike had a seat height of 800 mm and a dry weight of 132 kg. The fuel tank had a capacity of 10 litres and it gave an average fuel consumption of 18.0 km per litre. The bike delivered a top speed of 160.0 km/h and was tested in the Motosprint 1990.

Technical specifications:

Make Model: Honda NSR 125F-II

Year: 1991


Engine: Two stroke, single cylinder, Reed valve induction
Capacity: 124.8 cc / 7.6 cu-in
Bore x Stroke: 54 x 54 mm
Cooling System: Liquid cooled
Compression Ratio: 12.0:1
Induction: Dell’Orto PHBH 28 FS carburetor
Ignition: Capacitor discharge electronic ignition
Starting: Electric & Kick
Max Power: 31 hp / 23.1 kW @ 10500 rpm
Max Torque: 20.85 Nm / 15.1 lb-ft / 2.1 kgf-m @ 9000 rpm
Clutch: Multi-disc oil bath
Transmission: 6 Speed
Final Drive: Chain
Frame: Double cradle tubular steel panels
Front Suspension: 35mm Marzocchi telescopic forks

Rear Suspension: Marzocchi shock with Pro-kink adjustable preload
Front Brakes: Single 316mm disc 2 piston caliper
Rear Brakes: Single 220mm disc 1 piston caliper
Front Tyre: 100/80 -17
Rear Tyre: 130/70 -18
Seat Height: 800 mm / 31.4 in
Dry Weight: 132 kg / 291 lbs
Fuel Capacity: 10 Litres / 2.6 US gal
Consumption Average: 18.0 km/lit
Braking 60 – 0 / 100 – 0: 13.4 m / 38.6 m
Standing 1/4 Mile: 15.4 sec / 136.3 km/h
Top Speed: 160.0 km/h / 100 mph
Road Test: Motosprint 1990

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