Honda NSR 250R MC21 (1992-93)

The Honda NSR 250R MC21 was a two-stroke motorcycle built in 1992-93. It had a 249cc V-twin engine with a 90-degree angle and reed valve/exhaust valve. The bike was liquid-cooled and had a compression ratio of 7.3:1. The TA20 carburetor type and separate pump lubrication made this bike stand out from others. Additionally, it had an aluminum tube frame, 41mm semi-adjustable front suspension, and Pro-Link single shock swingarm non-adjustable rear suspension. The bike had 2x discs, 2 piston calipers for front brakes and a single disc, 1 piston caliper for rear brakes, and a constant mesh 6-speed transmission with a chain final drive. The NSR 250R MC21 had a dry weight of 132 kg / 291.8 lbs and a wet weight of 151 kg / 337 lbs. The fuel capacity of the bike was 16 liters / 4.2 US gal. The bike had a max power of 45 hp / 32.8 kW @ 9500 rpm, and a max torque of 35 Nm / 25.8 ft-lbs @ 8500 rpm. The wheelbase was 1345 mm / 52.9 in, seat height 770 mm / 30.3 in, and ground clearance 135 mm / 5.3 in. The Honda NSR 250R MC21 was widely reviewed, with different types of reviews available, including type I, type II, technical, and nsr250.net. Overall it was a lightweight, high-performance motorcycle with advanced suspension and braking systems.

Technical specifications:

Make Model: Honda NSR 250R MC21

Year: 1992 – 93
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
Review: Type I / Type II / Technical / nsr250.net