Honda CBR400RR (1988)

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The Honda CBR400RR was a motorcycle model produced in 1988. It has a four-stroke, transverse four-cylinder, DOHC engine with a capacity of 399 cc. The valve system has four valves per cylinder and the intake valve closes at 1mm lift, while the exhaust valve opens at 1mm lift. The engine is cooled by a liquid cooling system with a radiator and cooling fan. It has a compression ratio of 11.3:1 and uses forced pressure and wet sump lubrication. The bike has a four-carburetor induction system and a triple-phase output alternator. It’s ignition is digitalized full transistor ignition, and the battery is 12v (6AH) YTX7A-BS. It starts with electric ignition and has a maximum power of 59 hp / 42.2 kW at 12500 rpm and maximum torque of 39 Nm / 28.8 ft-lb @ 10000 rpm. The clutch is multi-plate, wet and uses a six-speed transmission, with final drive provided by a chain. The frame is a twin-spar, box-section aluminum design, and the bike has 41mm Showa damper-rod forks with adjustable pre-load for the front suspension and Showa gas/oil shock with adjustable preload and compression for the rear suspension. The front brakes have two 275mm discs with 4 piston calipers, while the rear brake has a single 220mm disc with a 2 piston caliper. It has a wheelbase of 1375mm / 54.1 in and weighs 163 kg / 359.4 lbs. It has a fuel capacity of 15 Litres / 4.0 gal. The CBR400RR model has a rake of 24.3 degrees and a trail of 91 mm / 3.6 in. The dimensions are length 1990mm / 78.3 in, width 670mm / 26.4 in, and height 1080 mm / 42.5 in. The seat height is 750 mm / 29.5 in and the ground clearance is 125 mm / 4.9 in.

Technical specifications:

Make Model: Honda CBR 400RR

Year: 1988


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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