Check out this Quality metal Chrome speedometer adapter ring for 85mm GPS speedometers, 85mm tachometers or original gauges with a 3-1/2" diameter.
Speedometer includes clamps used for installation. 85mm adapter ring is shown installed on a FLTR dash panel. Dash panel Not included.
More Information
Diameter O.D. 5"
Diameter I.D. 3-3/8" 

FITS Harley-Davidson
FLHR 2008-2020
FLST 1996-2017
FXST 1996-2017