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machine specifications

This data is provided for informational purposes only. Information provided in this document is provided 'as is' without warranty of any kind, either express or implied. The user assumes the entire risk as to the accuracy and the use of these documents and as such sevenfifty.co.uk, Laurie Baker, Phil Skinner or Chris Chapman cannot be held responsible for any loss resulting from the use of this data.

If you are in any doubt whatsoever, contact your nearest agent and ask for Honda's recommendations or consult a trained motorcycle mechanic.

Honda CB Sevenfifty (RC42) UK Specification

Machine dimensions
Overall Length 85 inches (2.1mtr)
Overall Width 31 inches (0.78mtr)
Wheelbase 59 inches (1.5mtr)
Ground Clearance 5 inches (130mm)
Dry Weight 475lbs (215kg)
Weight with fuel, Oil etc. 520lbs (235kg)
Petrol Tank Capacity 20 litres
Reserve Capacity 3 litres

Engine data
Bore and Stroke 67 x 53mm
Engine Capacity 747cc
Firing Order 1,2,4,3
Ignition Timing 'F' Mark 10° BTDC
Compression Ratio 9.3 : 1

Capacities and Oils
Engine Oil Capacity
Engine Oil Capacity (oil change) 2.8 litres
Engine Oil Capacity (oil change + filter) 3.0 litres
Engine Oil Capacity (at build) 3.8 litres

Engine Oil Type
API service classification: SE, SF or SG. Viscosity should be selected according to the ambient temp - see following list.

-10 to 33°C 10W-30 multigrade
-10 to 40°C+ 10W-40 multigrade
-0 to 40°C+ 20W-40 multigrade
-0 to 40°C++ 20W-50 multigrade

Front fork oil capacity 482cm³
Front fork oil type 110
Front suspension free spring length 28cm (10.7 inch)
Rear suspension damper medium Compressed Nitrogen Gas
Rear suspension free spring length 253mm (10 inch)

Front/Rear Brake fluid type DOT4
Brake disk thickness service limit 4mm

Size and No. of links 525 / 112

Minimum Tread Depth 1.5mm
Cold tyre pressure (driver only) 36psi
Cold tyre pressure (driver & passenger) 36psi
Tyre Size 120/70 17

Minimum Tread Depth 2.0mm
Cold tyre pressure (driver only) 36psi
Cold tyre pressure (driver & passenger) 42psi
Tyre Size 150/70 17

Spark Plugs
Recommended Plugs
X24EPR-U9 (Nippondenso)

0.8 - 0.9mm (0.03 - 0.04 inch)