Kitaco helmet lock in black with both keys. Great fit and finish.
Bought it from Webike Japan, and was on the bike for less than a month before I sold my 2017 R3.

KITACO : Helmet Holder [80-564-07700] <-- Webike's sale listing...I believe they say it fits all R3s and MT-03s.

$20 shipped within the lower 48.