Honda CBR400RR (1990)

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The Honda CBR 400RR is a motorcycle model from 1990. It has a four-stroke, transverse four-cylinder, DOHC engine with a capacity of 399cc. The bike has a liquid cooling system with a radiator and cooling fan, and a compression ratio of 11.3:1. The engine is lubricated by forced pressure and a wet sump. The bike has an electric starter and a maximum power output of 59 hp at 12500 rpm. The clutch is multi-plate and wet, and the transmission has six speeds. The bike’s frame is a twin-spar box-section aluminum construction, and the front forks are 41mm Showa damper-rod forks with adjustable preload. The rear suspension is a Showa gas/oil shock with adjustable preload and compression. The bike has front brakes with 2x 275mm discs and four-piston calipers, and rear brakes with a single 220mm disc and two-piston caliper. The bike weighs 163 kg and has a ground clearance of 125 mm. It can hold up to 15 liters of fuel. The bike has a sleek design and a sporty feel, making it popular among motorcycle enthusiasts.

Technical specifications:

Make Model: Honda CBR 400RR

Year: 1990


Engine: Four stroke, transverse four cylinder, DOHC, 4 valve per cylinder.
Capacity: 399 cc / 24.3 cu-in
Valve: Intake valve closes @ 1mm lift / Exhaust valve opens @ 1mm lift
Bore x Stroke: 55 x 42 mm
Cooling System: Liquid cooled; radiator with cooling fan
Compression Ratio: 11.3:1
Lubrication: Forced pressure and wet sump
Oil Pump Type: Trockoid
Oil Capacity: 3.8 Liters
Induction: 4x 26mm Flat-side CV
Charging: Triple phase output alternator
Ignition: Digitalized full transistor ignition
Spark Plug: NGK CR9EH-9 or ND U27FER-9
Battery: 12v (6AH) YTX7A-BS
Starting: Electric

Max Power: 59 hp / 42.2 kW @ 12500 rpm
Max Torque: 39 Nm / 28.8 ft-lb @ 10000 rpm
Clutch: Multi-plate, wet
Transmission: 6 Speed
Final Drive: Chain
Primary Drive: 2.117
Gear Ratio: 1st 3.307: 1 (43/13) 2nd 2.352: 1 (40/17) 3rd 1.875 (30/16) 4th 1.591 (35/22)3 5th 1.435 (33/23) 6th 1.318 (29/22)
Frame: Twin-spar, box-section aluminum
Front Suspension: 41mm Showa damper-rod forks with adjustable pre-load
Rear Suspension: Showa gas/oil shock with adjustable preload and compression
Front Brakes: 2x 275mm discs 4 piston calipers
Rear Brakes: Single 220mm disc 2 piston caliper
Font Wheel: 17×3.5 in.
Rear Wheel: 17×4.5 in.
Front Tyre: 120/60-17
Rear Tyre: 150/60-18
Rake: 24.3 degrees
Trail: 91 mm / 3.6 in
Dimensions: Length 1990mm / 78.3 in width 670mm / 26.4 in Height 1080 mm / 42.5 in
Wheelbase: 1375mm / 54.1 in

Seat Height: 750 mm / 29.5 in
Dry Weight: 163 kg / 359.4 lbs
Ground Clearance: 125 mm / 4.9 in
Fuel Capacity: 15 Litres / 4.0 gal

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