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1970 Honda CB450K Speedometer Parts Guide

Speedometer work on a 1970 CB450K may mean replacing a cable or choosing a custom instrument. Decide which arrangement to keep before ordering. The replacement cable has a stated Honda reference and length; the custom gauges require their own drive and mounting checks.

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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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1970 Honda CB450K · Tach & Speedo Buying guide

Separate cable replacement from custom instrument fit

The black cable is listed at 38.5 inches end-to-end, replacing Honda 44830-425-870. The MPH and KPH instruments are mechanically driven, 85mm in diameter and LED illuminated. Their descriptions require custom mounting rather than confirming a complete original-gauge replacement.

Parts to consider

Honda CB Speedometer Cable ~ Replaces 44830-425-870 38.5-inch black speedometer cableMade in Japan and referenced to Honda 44830-425-870. Compare the stated end-to-end length and both connections with the cable arrangement you need.View part Custom Vintage Style Speedometer MPH Custom MPH mechanical speedometer0–130 MPH instrument with the stated 2240:60 ratio and LED illumination. Custom mounting is required; verify the drive and cable before ordering.View part Custom Vintage Style Speedometer KPH Custom KPH mechanical speedometer0–220 KPH instrument specified at 60 km/h = 1400 rpm, with LED illumination. Compare its mechanical input and custom mounting requirements.View part

Related parts: Speedo drive gear plug

Do not assume a cable and gauge are a verified combination

The cable’s model application does not establish compatibility with either custom gauge. Its description supplies length and a replacement reference, but not exact thread or drive-tip dimensions. Check both connection ends and the chosen instrument’s drive specification before assembling a custom speedometer order.

Choose a protective plug for its separate function

The gear plug is described as keeping the original speedo drive gear clean. Its listed dimensions are 15mm outer diameter and 22mm length. It is not a cable or a speed-reading instrument; compare the fitted drive opening before choosing it for the protection needed in your arrangement.

Buying questions

Can I assume the replacement cable fits either custom speedometer?

Confirm the actual cable ends and the selected gauge connection. The cable description gives a Honda reference and overall length, without the end dimensions needed to prove that custom pairing. The speedometer’s required drive specification also needs an independent match.

What does LED illumination change about the speedometer input?

It describes the lamp. Both gauges still use a mechanical drive for road-speed input. Plan the cable and drive compatibility separately from the lighting connection, whose voltage and wiring details are not established by the LED wording alone.

What should I compare when the front end has been replaced?

Identify the speedo drive and cable connections belonging to the fitted front end. Then compare the required gauge specification, cable length and mount. A 1970 frame year cannot establish the compatibility of components used in a front-end conversion.

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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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