Touring riders cross-shop these two even though one flips up and one doesn't, because they answer the same brief — a comfortable, sun-visor-equipped touring helmet — from different angles. The HJC RPHA 91 is our top modular pick on certification; the Shoei GT-Air 3 is the refined DOT touring full-face. Certification and a flip-up, or Shoei finish and a lighter shell.
Certification: the RPHA 91 leads, clearly
The RPHA 91 carries genuine ECE 22.06 with P/J and an independent 4/5 SHARP score. The US GT-Air 3 is a DOT build (the European GT-Air 3 is the 22.06, 5/5 SHARP unit, but not the US one). So on the exact US helmets, the value HJC out-certifies the premium Shoei — the current rotational standard plus independent data, versus DOT. If the mark on the shell leads your decision, this isn't close.
Format and features
The RPHA 91 is a flip-up modular; the GT-Air 3 is a one-piece full-face. Both have a drop-down sun visor and comms integration, so the feature sets overlap — the difference is the chin bar. If you want to lift the front at stops or wear glasses, the RPHA 91's flip-up is a real advantage. If you don't need it, the GT-Air 3's simpler shell is lighter and, to some riders, feels more solid.
Refinement and quiet: the GT-Air 3's territory
This is where the Shoei earns its price. The GT-Air 3 is quieter, plusher and more finely finished than the value-focused RPHA 91, with a smoother shield mechanism and a more premium interior. The RPHA 91 is a genuinely good helmet, but the GT-Air 3 feels like the flagship it is. For a rider who prizes that refinement over the certification difference, the Shoei delivers it.
Weight and price
The RPHA 91 (~1,740 g) is a touch lighter than the GT-Air 3 (~1,774 g) and costs meaningfully less. So the value equation favors the HJC twice over — cheaper andbetter certified — while the Shoei's premium buys refinement and brand. That's the trade in a sentence.
The verdict
Want the current ECE 22.06 P/J certification, a SHARP score, a flip-up chin bar and a lower price? The HJC RPHA 91— our top modular pick. Want Shoei's refinement, quiet and finish in a one-piece full-face, and DOT satisfies you? The Shoei GT-Air 3. Read the RPHA 91 review and GT-Air 3 review for detail.
How we picked
We compiled published specifications, cited each helmet's certification (DOT, ECE 22.06, Snell, SHARP) from the standards body or manufacturer homologation, and aggregated owner reports, then scored against a published method. The scores are judgments from documented research — not measurements we took. We do not run a crash lab. Certifications reflect the US-market build; where it differs from the European version, we say so and cite it.
