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1973 Honda CB450K Speedometer Purchase Planning

Start the speedometer order for your 1973 CB450K with the drive and instrument you plan to retain. A referenced replacement cable, custom mechanical gauge and protective gear plug serve different needs. Compare each connection and mounting requirement before treating separate purchases as a compatible combination.

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Currently viewing Tach & Speedo

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Honda CB750 CB550 CB500 CB450 CB400 speedometer cable 44830-425-870

Honda CB Speedometer Cable ~ Replaces 44830-425-870

$22.66 USD
51-2304
Replace your CB speedometer cable with this Speedometer Cable in black, replacing OEM #44830-425-870. End-to-end length 38.5". Made in Japan.Key Features• Speedometer cable, black•...
Honda CB1000 CB900 CB750 CB650 speedo gear plug

Honda CB1000/CB900/CB750/CB650 Speedo Gear Plug

$43.95 USD
29-0538
Keep your speedo drive gear clean with this Speedo Gear Plug, 15mm outer diameter, 22mm long.Key Features• Speedo gear plug• 15mm outer diameter, 22mm...
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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1973 Honda CB450K · Tach & Speedo Buying guide

Choose the speed-input arrangement before its supporting parts

The cable lists Honda 44830-425-870 and 38.5-inch end-to-end length. Custom MPH and KPH gauges give separate mechanical specifications with LED lighting. The protective plug instead gives 15mm outer diameter and 22mm length for its stated protection role.

Parts to consider

Custom Vintage Style Speedometer MPH Mechanical MPH option for a custom mount0–130 MPH gauge with stated 2240:60 requirement and LED illumination. Check the fitted drive, cable interface and mounting arrangement before choosing the instrument.View part Custom Vintage Style Speedometer KPH Mechanical KPH option for a custom mount0–220 KPH gauge stated at 60 km/h = 1400 rpm. Verify that requirement, the cable connection and space for the custom bracket.View part Honda CB Speedometer Cable ~ Replaces 44830-425-870 Black cable with a stated replacement referenceJapanese-made cable replacing Honda 44830-425-870, 38.5 inches end-to-end. Confirm the layout’s reach and end fit before pairing it with a changed gauge.View part

Related parts: 15mm-OD plug for original drive protection

A dial choice needs a mechanical comparison

MPH or KPH describes the selected scale, but each listing also gives an input specification that must suit the drive fitted. Compare that value before assessing cable attachment. Styling, the motorcycle application and the cable reference do not establish a verified drive-and-instrument combination for every custom build.

Plan the bracket and lighting connections independently

Both gauges require custom mounting and list 85mm diameter, 55mm thickness and 57mm mounting centres. Compare those figures with the planned bracket and rear connection space. LED illumination is a separate electrical feature; the descriptions do not supply a lighting voltage or establish a complete bracket, cable and wiring kit.

Buying questions

What needs checking if I keep the drive but change the speedometer?

Compare the retained drive with the exact new gauge specification, then verify the cable-end interfaces and needed reach. The cable listing does not give detailed threads or drive-tip dimensions. Obtain those details before deciding that the new combination is compatible.

How should I assess the protective gear plug on a changed front end?

Identify the actual drive opening and required protective use, then compare the plug’s 15mm outer diameter and 22mm length. Its description concerns keeping the original drive gear clean. Those figures do not identify another drive’s cable threads or calibration.

What remains to plan after finding room for the 85mm gauge body?

Allow for the stated 55mm thickness, 57mm mounting centres and access to the rear connections. Custom mounting is required. Confirm the cable and lamp connection details separately, including any supporting parts needed, rather than assuming body diameter establishes a complete installation.

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