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Honda CB 400SF Super Four

Make Model	Honda CB 400SF Super Four
Year	1992 - 95
Engine	Liquid cooled, transverse four cylinders, four stroke,
Capacity	399 cc / 24.3 cu in
Bore x Stroke	55 x 42 mm
Compression Ratio	11.3:1
Induction	4x 32mm carbs
Ignition	CDI
Starting	Electric
Max Power	53 hp / 38.6 kW @ 10000 rpm
Max Torque	40.1 Nm / 29.5 lb-ft @ 7500 rpm
Clutch	Wet, multi-plate
Transmission	5 Speed
Final Drive	Chain
Front Suspension	41mm Telescopic forks
Rear Suspension	Swing arm, Pro-link monoshock
Front Brakes	2x 296mm discs 4 piston calipers
Rear Brakes	Single 240mm disc 2 piston caliper
Front Tyre	110/80-18
Rear Tyre	140/70-17
Wheelbase	1410 mm / 56 in
Seat Height	755 mm / 29.7 in
Wet Weight	200 kg / 440 lbs
Fuel Capacity	18 Litres / 4.0 US gal

Model History

The Honda CB400 Super Four is a CB series 399 cc (24.3 cu in) standard motorcycle produced by Honda at the Kumamoto plant from 1992 to the present. The CB400 embodies the typical Universal Japanese Motorcycle produced through the 1970s, updated with modern technology. To this end, the bike has a naked retro design, paired with a smooth inline-four engine. Originally a Japan-only bike, it was later also available in SE Asia, and from 2008 in Australia.

The CB400 Super Four had a similar engine as the early CB-1.

Super Bold'or

Starting in 1999 the CB400 has also been available in Japan with a small headlight fairing, this model is known as the Super Bol D'Or.

1992 - 1999

The CB400 Super Four (1992) was produced between 1992 and 1999 in a variety of colours.
In 1994, minor changes were made to the engine to improve efficiency, a new instrument cluster with fuel gauge in the tachometer was added.

Compared to the CBR400RR, the engine was tilted backwards to obtain a much more erect cylinder bank. Carburetion went from downdraft to sidedraft type, but still CV.

The cylinder head received new mounting lugs to the frame totally different from the original CBR design. Originally fitted with gear cam drive system, the new version of the engine fitted to the CB400SF was outfitted with a more conventional chain drive system. Overall gearing was altered so that the engine turned less rpm in 6th gear compared to the CBR and CB-1. Also, the gearbox received a wider ratio so that while 6th gear was taller, 1st were lower compared to earlier versions of the engine. Redline was set to 12500 rpm for the CB400SF compared to 13500 rpm for the CB-1.