VintageCB750 Supplying CB Riders Since 2010

About Us Why Us? Reviews Shipping Info Returns Contact Us
Wish Lists
0 My Cart

Your cart is currently empty.

Browse all parts
Total (USD): $0.00
View cart
Menu
Search
Wish
Cart 0
My motorcycle Choose your Honda CB model

Search parts

Searching all Honda CB parts

Example: brake pads or oil filter.

1978 Honda CB400A Custom Speedometers

These custom mechanical speedometers offer MPH or KPH displays for a CB400A instrument project. They are not complete original instrument assemblies. Compare calibration, cable connection and mounting space, and plan for the Hondamatic’s separate gear indicator before choosing a gauge.

Close ×
Your saved bike Choose your Honda CB model

Shop By Category

Most orders ship same or next business day Fitment guarantee Listed for your exact model and year? We’ll make it right if it doesn’t fit as described. Mechanic-backed support Ask our team for help choosing the right Honda CB part.
Currently viewing Tachometer & Speedometer

Honda motorcycle parts

Choose your model and year to see parts listed for your bike.

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...
View details
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...
View details
compare

1978 Honda CB400A · Custom speedometers Buying guide

Choose display units and verify the complete gauge installation

Both gauges require custom mounting and use mechanical drives with LED illumination. Their stated calibration and dimensions are purchasing checks, not confirmation that either will directly replace the original CB400A instrument.

Parts to consider

Custom Vintage Style Speedometer MPH Custom mechanical MPH speedometer0–130 MPH, 85 mm diameter and 2240:60 mechanical ratio. Custom mounting is required; verify the drive and connections.View part Custom Vintage Style Speedometer KPH Custom mechanical KPH speedometer0–220 KPH, 85 mm diameter and 60 km/h at 1400 rpm calibration. Custom mounting and compatibility checks are required.View part

Compare the two calibrations accurately

The MPH gauge reads 0–130 MPH and specifies a 2240:60 mechanical ratio. The KPH version reads 0–220 KPH and specifies 60 km/h at 1400 rpm. Check the motorcycle’s fitted speedometer drive and cable connection against the chosen gauge before deciding it is suitable.

Measure the mounting space behind the face

Both gauges specify 85 mm diameter, 55 mm housing thickness, a 25 mm rear-mount dimension and mounting points 57 mm center-to-center. Compare those measurements with the intended bracket and nearby controls. Plan LED illumination wiring and the separate gear indicator as part of the custom installation.

Custom speedometers buying questions

Are these bolt-on replacements for the original CB400A instrument?

Both are explicitly custom-mount speedometers. Confirm calibration, cable connection, bracket dimensions and illumination wiring before ordering. The original Hondamatic gear-position indicator also needs to remain functional or be accommodated separately in the planned layout.

What is the difference between the MPH and KPH versions?

They use different road-speed scales and stated calibration: 0–130 MPH at 2240:60, or 0–220 KPH at 60 km/h for 1400 rpm. Verify the selected unit against the fitted drive rather than choosing only by face appearance.

What dimensions matter when making a mounting bracket?

Compare the 85 mm diameter, 55 mm housing thickness, 25 mm rear-mount dimension and 57 mm mounting-point spacing. Allow access for the mechanical cable and lighting leads, and check clearance to the other controls before fabrication.

Not sure which part you need?

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

Ask a fitment question
Parts categories for 1978 Honda CB400A

Your cart

×