Gearbox, Speedometer

Hi,
I'm the owner of a 1975 Norton roadster and I will like to install a KPH speedo instead of a MPH. Is the gearbox Speedo the same as the MPH one?
Gearbox speedo #06-5540
MPH Speedo: Smith 06-5638
KPH Speedo: Smith 06-5645
Thanks for the interest for tis question

michel 09 said:

Is the gearbox Speedo the same as the MPH one?

Click to expand...

Yes. = 1.25:1 (15/12)

hey guys

Just found out the hard way, mine is 2:1, as it died today


and my mph speedometer showed kph for me

Thanks for your quick answers,
Have a nice summer and enjoy your ride