Honda CRF125F 2022 Owner's Manual page 21

Modifications
We strongly advise you not to remove any
original equipment or modify your motorcycle
in any way that would change its design or
operation. Such changes could seriously impair
your motorcycle's handling, stability and
braking, making it unsafe to ride.
Because safety, vehicle movement, and
clearance must be taken into consideration, you
must consult your tyre maker or Honda dealer
before changing your tyre model type.
Removing or modifying your exhaust system
(such as the spark arresters or mufflers) or
other equipment can also make your
motorcycle illegal.
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