Spec Sheet
The information below is specific to the Honda - 400 CB 400 SF %28F2T%29 Superfour %28Japan%29 NC31, showing anything for service information to the amount of fork oil or even the tyre pressures. If you would like to contribute any missing information, please use the edit link below.
Back.Bike Info
CC:
400
Chassis info:
NC31
Service
Chain Freeplay mm:
30-40mm
Cooling System (litres):
1.6
Engine Oil Grade SAE:
10/40w
Engine Oil quantity (litres):
2.7
Engine Oil quantity with filter (litres):
2.9
Fork oil grade:
10w
Front Fork Oil cc (left leg):
499cc (112mm from top, no springs)
Front Fork Oil cc (right leg):
499cc (112mm from top, no springs)
Idle Speed (rpm):
1200rpm ± 100
Spark Plugs Gap (mm):
0.8-0.9
Tyre Pressure Back Bar / psi:
32psi / 2.2bar
Tyre Pressure Front Bar / psi:
28psi / 2bar
Valve Clearance Cold - Exhaust:
0.19-0.25mm
Valve Clearance Cold - Inlet:
0.12-0.18mm
Brakes
Front:
Twin Disc
Rear:
Disc
Brake fluid:
DOT4
Front Disc Size:
298mm
Front-Pistons-per-caliper:
Twin Piston Calipers
Rear Disc Size:
220mm
Dimensions
Dry Weight:
173Kg. / 381 lbs
Fuel Capacity:
15 Litres
Ground Clearance:
130 mm
Height:
1070 mm
Length:
2050 mm
Rake:
27.15°
Reserve Fuel Capacity:
2 Litres
Seat Height:
760 mm
Wet Weight:
188Kg / 414.5 lbs
Wheelbase:
1415 mm
Width:
725 mm
Electrics
Voltage:
12v
Bulb-Headlight:
70/80w FF ("Future Focus" but H4 will fit, cut one tab)
Spark Plugs:
NGK CR8EH-9
Engine
Type:
Liquid Cooled 4 Stroke DOHC Straight Four
Bore x Stroke:
55 x 42 mm
Carburation:
Keihin CVx4 (VP22)
Carburation Idle Jet:
35
Carburation Main Jet:
1+4: 95, 2+3: 98
Compression Ratio:
11.3
Displacement:
399 cc
No. of Valves:
16
Pilot Screw Setting:
2 1/2
Red line RPM:
12500
Starting:
Electric
Transmission
Chain Number of Links:
112
Chain type:
525
Clutch Type:
Wet Multiplate
Final Drive:
Chain
Gearchange Pattern:
1-N-2-3-4-5-6
Gear Ratio 1st:
3.307
Gear Ratio 2nd:
2.294
Gear Ratio 3rd:
1.750
Gear Ratio 4th:
1.428
Gear Ratio 5th:
1.240
Gear Ratio 6th:
1.130
Sprocket front:
15
Sprocket rear:
46
Transmission:
6 Speed
Misc.
Exhaust:
4 into 1 with 3 bolt-on silencer can
Frame:
Tubular steel cradle frame(NC31)
Motorcycle Style:
ROADSTER
Place of Manufacture:
Japan
Power
Fuel Consumption:
45-55mpg (5.2-4.2l/100km)
Max Power Output:
53 BHP (39.5kW) / 11500rpm
Max Torque:
30ft.lb. (4kgm) (40Nm) @ 9500 rpm
Standing 1000m:
170 kph
Standing 1/4 mile:
14.5 seconds
Top Speed:
105 mph (restrictor fitted) (170kph)
Suspension
Front:
41mm telescopic forks
Front Travel:
130 mm
Rear:
win ShTwin Showa remote reservoir shocks with 5 step preload adjustment
Rear Travel:
110 mm
Tyres
Front:
110/70-17 Tubeless
Rear:
140/70-17 Tubeless
Add information to the model
All information presented on the website is given to the best of our knowledge at the given time. All information is intended to only as a guide. A major Japanese manufacturer's quote:
We reserve the right to vary our specification with or without notice, and as such time and in such manner as we think fit.