AGV K1 S vs AGV K6 S

Here's the AGV decision with the certification held equal. Both the K1 S and the K6 S carry genuine US DOT + ECE 22.06 — the same current standard — but the K6 S costs roughly three times as much. So this page answers a blunt question: with the mark on the shell identical, what does the flagship money buy?

Certification: a genuine tie, with one edge to the K6 S

Both hold genuine DOT + ECE 22.06. The tiebreak is independent data: the K6 S has been SHARP-tested at a perfect 5/5, real third-party impact data, while the budget K1 S is not SHARP-rated. That doesn't make the K1 S less certified — the homologation is the same — but the K6 S has an extra, independent safety data point on its side.

Weight: the K6 S wins, decisively

This is where the money goes. The K6 S is around 1,255 gof carbon-aramid — one of the lightest full-face helmets made — versus the thermoplastic K1 S's ~1,600 g. That's a ~345 g difference you feel as neck fatigue on a long day and as agility through corners. If low weight matters to you, the K6 S is in a different class.

Finish and fit

The K6 S feels like the premium helmet it is — plusher interior, more refined finish — while the K1 S is comfortable but plainer. Both share AGV's sporty, wide-view character and a fit that suits intermediate-oval-to-sporty heads and runs snug for round ones. Neither has a sun visor. So the K6 S is the better helmet to live with; the K1 S gives you AGV's look and the current certification for far less.

The verdict

Want the lightest AGV full-face with independent SHARP data and a premium feel? The K6 S— the safety-data leader of its class. Want genuine ECE 22.06 and AGV's character at a budget price, and you can live with the weight? The K1 Sis the value choice, and you're not compromising on the current standard to get it. Read the K1 S review and K6 S review for the detail.