Adding a digital speed clock

[MatsyLR]

Is there anyway to add a very simple speed meter (like small digital display) to a Sinnis Apache 125? that you can just add somewhere on the front which will tell you, your speed with a digital display?
If so how do you add one and where to get one from?
Would rather have a digital display than the normal speed dial.

 

[ShakenNstirred]

yeah get one for a bicycle, the one I had went up 186mph so fine for a motorbike
put the sensor on the forks and wheel , set the wheel size and that's about it.
or go the more expensive route and get one made for a motorcycle

 

[MatsyLR]

Ahh so I can just use a bike one?/ are they accurate?