Honda CB1000RA 2021 Owner's Manual page 69

Tachometer color function
#
Shift Up Mode
When shift up mode is ON, the tachometer
color changes according to the shift point
setting.
To set the shift up mode
(P.40)
(P.47)
The tachometer blinks yellow when the
engine revolutions exceed the set value of
SHIFT POINT.
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