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1972 Honda CB450K Speedometer Drive & Cable Guide

Identify the speedometer drive on your 1972 CB450K before choosing a replacement cable or custom instrument. The gauges need a matching mechanical input and custom mounting. The cable has a stated Honda reference and length, but its connection fit still matters when components are changed.

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Currently viewing Tach & Speedo

Honda motorcycle parts

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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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1972 Honda CB450K · Tach & Speedo Buying guide

Decide the instrument arrangement before ordering its connections

The black cable is 38.5 inches end-to-end and references Honda 44830-425-870. MPH and KPH custom gauges are mechanically driven with LED illumination. Their own specifications must match the fitted drive independently of cable reach or bracket appearance.

Parts to consider

Honda CB Speedometer Cable ~ Replaces 44830-425-870 38.5-inch cable with Honda replacement referenceBlack Japanese-made speedometer cable, replacing Honda 44830-425-870. Check the needed reach and each connection before pairing it with a changed instrument.View part Custom Vintage Style Speedometer MPH Custom mechanical gauge with MPH scale0–130 MPH speedometer listed at 2240:60. Its LED illumination is separate from the mechanical speed input; confirm the drive, cable and custom mount.View part Custom Vintage Style Speedometer KPH Custom mechanical gauge with KPH scale0–220 KPH speedometer specified at 60 km/h = 1400 rpm. Compare that requirement with the fitted drive and verify cable fit and mounting space.View part

Related parts: Speedo gear plug for drive protection

Keep calibration beside the selected gauge

The MPH and KPH products give their own mechanical specifications. Carry the chosen value into the drive comparison, then verify cable attachment as a separate requirement. A cable listed for the motorcycle or a similar vintage-style dial does not establish the complete custom instrument combination.

Specify the protective part independently

The gear plug is described for keeping the original speedo drive gear clean. Its measurements are 15mm outer diameter and 22mm length. Compare the opening and intended protective use without treating those measurements as cable-end dimensions, a drive ratio or a complete speedometer conversion package.

Buying questions

What should I check before combining the cable with a custom gauge?

Confirm both end connections, the needed reach and the selected instrument’s mechanical requirement. The cable description gives a Honda reference and overall length, not exact thread or drive-tip dimensions. Obtain that connection information before treating the parts as a verified combination.

Can gauge diameter alone decide the new mounting arrangement?

Also compare the listed 55mm thickness and 57mm mounting centres, plus space for the rear cable and lighting connections. Both 85mm gauges require custom mounting. Their diameter does not verify original-bracket fit or identify every supporting part needed.

What should I compare before choosing the drive-protection plug?

Identify the drive opening and protective part required, then compare the listed 15mm outer diameter and 22mm length. Confirm the arrangement after any front-end change. Those plug measurements do not establish cable connections or a complete speedometer conversion package.

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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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