Best Deal for
0-180 KPH Motorcycle Speedometer, 
10 000 RPM Tachometer 4:1 ratio
80mm Fitment Size, M18x1.5 Thread

(A Smiths Replica Mechanical Speedometer+ Tachometer)

Size & Dimensions:

80mm Case
M18x1.5 Connection Thread
Studs & Brackets
Illumination Bulb & Holder included

will fit many models of vintage bikes with 0-180 Kilometer per hour Range