Jacob, I would not say it's on size differnce but the 437's I are smaller than other helmets in the same size, which is "M" in my case. When its brand new its a tad too tight but the liner loosens a bit during use.
Compared to an Airoh Aviator, a Nolan (dunno the type) and an Arai its smaller.
But I do not know if that's the same with the 470.
Last edited by Doc Brown; 07-30-2019 at 01:28 AM.
|