Sport-touring full-face helmets ranked by the mark on the shell — the lightest, the quietest, and the ones with the independent SHARP data to back the badge.
The full-face is the safest helmet shape you can buy, and the category where certification data is richest — several of these have been independently SHARP-tested, so you're not taking the manufacturer's word for it. The decision here comes down to three axes: weight, whether you want a built-in sun visor, and which certification philosophy you trust.
The AGV K6 S is the standout on paper: ~1,255 g of carbon-aramid, genuine US DOT + ECE 22.06, and a perfect 5/5 SHARP score. The Shoei RF-1400 is the sport-touring default — light, quiet, DOT + Snell M2025, and its European twin (the NXR2) is also a 5/5 SHARP helmet. Neither has a sun visor. If you commute and want one, the Shoei GT-Air 3 is the touring answer — but note its US build is DOT, while the European GT-Air 3 is ECE 22.06 and 5/5 SHARP. And the Arai Contour-X (the US Quantic) is the pick for round-oval heads that every other brand pinches.
The recurring theme is unavoidable in this category: the Japanese flagships' US builds lean DOT or DOT + Snell, while the European versions carry ECE 22.06. That doesn't make the US helmets unsafe — Snell is a demanding standard and DOT is the legal floor these exceed. It means you should buy with your eyes open about which mark is on the shell, which is the entire point of this site.
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