Honda CBR 2018 Series Owner's Manual page 22

Instruments
button
MODE
Changing the Speed and Mileage Unit
Press and hold
MODE
"km/h" and "km") for the speedometer, odometer and tripmeter at normal display.
Press button to select either "mph" and "mile" or "km/h" and "km", then press
MODE
and hold
MODE
18
button to change the speed and mileage units ("mph" and "mile" /
button to set.
Tachometer red zone
(excessive engine rpm range)
button
RESET
Tachometer
NOTICE
Do not operate the engine in
the tachometer red zone.
Excessive engine speed can
adversely affect engine life.