The funny thing about Police Motorcycles...Other than the decade they were produced...they were by design.. all alike.
In the case of Harley, the only thing that changed was the engine....and then only marginally. Harley engines changed about every 20 years...but only in the "Top End". The "Top End" was the cylinder heads and valves.
HARLEY: There was the
"Flat Head". Then there was the
"Knuckle Head". Then there was the
"Pan Head". then there was the
"Shovel Head." Then there is the...*****Head". I can't remember.... which is still current after 20 years. . The basic Harley engine is the same engine as 60 years ago. Oh Wait..they have fuel injection now.
Indian had a few Police Bikes way back when Harley was their only competitor.
There was a Kawasaki Police Bike (Ref: Tv Series: Chips)
Harley's are still the choice of municipalities because they are American...and they seem to be suited to slow speed cruising such as Motorcades and Funerals.
Just an observation.
NB