Honda CBR1000RR 2018 Owner's Manual page 120

Storage Equipment
Helmet Holder
CBR1000RA
The helmet holders are located underside of
the rear seat.
Use the helmet holder only when parked.
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Removing the Rear Seat
116
Helmet holder
Helmet D-ring
(P.144)
WARNING
3
Riding with a helmet attached to the
holder can interfere with your ability to
safely operate the motorcycle and
could lead to a crash in which you can
be seriously hurt or killed.
Use the helmet holder only while
parked. Do not ride with a helmet
secured by the holder.