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1986 Honda CB450SC Nighthawk Speedometer Drive & Dial Selection

For a speedometer change on the 1986 CB450SC Nighthawk, compare the mechanical drive with the instrument calibration first. MPH and KPH describe the display units; the published drive requirements determine the compatibility enquiry. Both instruments require a custom mounting plan for this model.

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Honda CB custom vintage style mph speedometer front view

Custom Vintage Style Speedometer MPH

$99.95 USD
03-0760
Custom Vintage Style Speedo (MPH) - Mechanical speedometer ratio: 2240:60. Before ordering, confirm the drive ratio, cable or electrical connection, gauge diameter, and mounting...
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Honda CB custom vintage style kph speedometer front view

Custom Vintage Style Speedometer KPH

$99.95 USD
03-0761
Custom Vintage Style Speedo (KPH) - Mechanical speedometer 60 km/h = 1400 rpm Before ordering, confirm the drive ratio, cable or electrical connection, gauge...
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1986 Honda CB450SC Nighthawk · Tach & Speedo Buying guide

Use the drive requirement to assess the chosen dial

The MPH gauge has a 0–130 mph scale and 2240:60 calibration requiring 2,240 cable revolutions per mile. The KPH gauge spans 0–220 km/h and is calibrated to show 60 km/h at 1,400 cable rpm. Establish the fitted drive specification before selecting either custom instrument.

Parts to consider

Custom Vintage Style Speedometer MPH MPH gauge with 2240:60 calibrationMechanical 0–130 mph display requiring 2,240 cable revolutions per mile. The approximate 85mm diameter, 55mm depth and 57mm mounting centers support planning a custom installation.View part Custom Vintage Style Speedometer KPH KPH gauge with stated cable-speed calibrationMechanical 0–220 km/h display calibrated for a 60 km/h reading at 1,400 cable rpm. Assess that requirement against the fitted wheel, gearbox, tire size and cable-drive ratio.View part

Give the supplier the complete drive arrangement

Record the wheel, speedometer gearbox, tire size and cable-drive ratio actually used. The KPH listing identifies these as factors in reading accuracy. Their combined specification matters when discussing a modified motorcycle; the listed model application does not establish the stock or modified drive ratio.

Check a retained cable as part of the purchase

Confirm the existing cable’s connection thread and direction against the chosen gauge, together with its drive calibration. Neither product specifies a guaranteed original-cable match. Resolve those details before adding cable or connection parts to the custom installation order.

Ordering questions

What drive figure should I supply when assessing the MPH gauge?

Compare the fitted speedometer drive with the gauge’s requirement for 2,240 cable revolutions per mile, stated as 2240:60 calibration. Its 0–130 mph dial range does not establish that match. Obtain the drive specification before ordering this custom instrument.

Which details matter in a KPH enquiry after wheel or tire changes?

Provide the fitted wheel, speedometer gearbox, tire size and cable-drive ratio. Those factors affect accuracy. Compare their resulting drive specification with the gauge’s calibration of 60 km/h at 1,400 cable rpm before choosing the KPH instrument.

What should be verified if I intend to reuse my existing mechanical cable?

Check its thread and direction against the gauge connection, and establish that the fitted drive meets the chosen calibration. The listings require those checks but supply no thread dimensions, direction value or assured original-cable match for this installation.

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Send your model and year, plus photos of your existing part and any changes to the original setup.

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