The HJC i100 is a decent flip-over modular helmet. It's ECE 2.06 certified (latest safety testing in Europe) comes with a good sun visor, Pinlock antifog insert in the box and it's a comfortable and well designed helmet. And of course it's got that flip-right-over chin bar that's one of the main reasons people seem to buy one. The main drawback is that at 1.9Kg it's a bit on the weighty side. But other than that it works well and owners seem to love theirs.
HJC i100: Review of HJC's first ever flip-over modular helmet.
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i100 – HJC HELMETS US
DOT certified for Safety, meets or exceeds FMVSS-218 and DOT safety standards Bluetooth-ready design accepts SMART HJC 10B or 20B Bluetooth
HJC i100 Helmet (Large) (Hyper Silver)