Shoei RF-1400 vs AGV K6 S

If you’re spending premium money on a full-face, the Shoei RF-1400 and the AGV K6 S are two of the names that come up most, and they’re genuinely close in quality while pulling in different directions. The Shoei is about refinement, quiet and a Snell rating; the AGV is about being remarkably light with a huge field of view. This is the spec-first breakdown of which one suits which rider. For the full picture on each, our RF-1400 review and K6 S review go deeper still.

The spec sheets, side by side

Every figure above is read from the manufacturer’s page; where a maker doesn’t state a test size for its weight, we say so rather than pretend to a precision we don’t have.

Weight: the AGV’s decisive win

The single biggest difference is weight. AGV’s carbon-aramid shell comes in at a published 1,255 g, one of the lightest full-faces on the market, while the Shoei is listed around 1,651 g. That roughly 400 g gap is genuinely felt on a long ride as reduced neck fatigue, and it’s the K6 S’s headline advantage. If you notice helmet weight, or you ride long days, the AGV starts ahead.

Certification: Snell vs 22.06

Both are thoroughly certified, but to different standards. The RF-1400 adds Snell M2025— the stricter, independent protocol — on top of DOT. The K6 S adds ECE 22.06, the newest European standard with rotational and multi-point impact testing, which the Shoei’s page didn’t list. Neither is simply “more certified”; they emphasize different testing philosophies. Our safety-ratings guide explains what each protocol actually checks, if the distinction matters to your decision.

Refinement vs field of view

The RF-1400’s reputation is built on quiet and refinement: the CWR-F2 shield with vortex generators is engineered against wind noise, and the fit and finish are the Shoei standard that everything else in the class gets measured against. The K6 S answers with a 190-degree Ultravision eye port— an unusually wide field of view that’s a real benefit for situational awareness and for riders who dislike a letterbox feel. It’s a fair summary of the whole comparison: Shoei polishes the experience, AGV opens up the view and drops the weight.

Where they’re the same

Both are premium, both are intermediate-oval helmets, both ship Pinlock-ready, and neither has an internal sun visor — the premium full-face convention is to fit a tinted shield instead. So if a drop-down sun visor is a must-have, neither is your helmet, and you should look at a modular or the budget LS2 Stream II. Between these two, the sun-visor question is a wash.

Fit and head shape

Both helmets are built for an intermediate ovalhead — the most common Western shape — so most riders will find either fits in principle, and the deciding fit question is the finer feel of each brand’s interior. Shoei and AGV both offer replaceable cheek pads and liners so you can fine-tune the fit, which matters because a premium helmet is one you’ll keep for years and should get dialed in properly. The AGV’s sportier shell shape suits a rider who spends time forward and tucked; the Shoei’s interior is a touch more accommodating for upright road use. Neither runs notably round or long, so if your head is distinctly one or the other, try before you buy — and our sizing guide walks through measuring circumference and reading your head shape so you order the right size the first time.

The verdict

Buy the Shoei RF-1400if you want the quietest, most refined experience and value a Snell rating — it’s the benchmark road full-face and the safer pick if you’re unsure. Buy the AGV K6 Sif you want the lightest shell and the widest view, and ECE 22.06 satisfies you on certification. There’s no wrong answer here — both are excellent, and the deciding factors are weight versus refinement and Snell versus 22.06. Confirm which suits your head with the full RF-1400 and K6 S reviews, and see how each ranks in our best full-face roundup.