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Old 10-31-2012, 07:09 AM   #11
Powdercoat it.
Brtp4's Avatar
Joined: Sep 2006
Location: Bend, OR
Oddometer: 1,989
Originally Posted by vanseagal View Post
More questions. My head is round 57, 5 cm. So the Fly Trekker would be better fit for my head according the reviews I have read. The AFX provides 5 years of warranty for the FX-39. How long is the Fly Racing warranty for the Trekker?
The shape of the two helmets is the same, but the sizing is different. The interior (ABS liner) volume of the AFX is larger than typical, the Fly more consistent with industry norm.

I will try to explain this so it makes sense: Size L is statistically the most common size. Since the AFX runs large, a person who typically wears an L, needs an M. The outer shell mold size splits at M > L. XS, S, M use the small shell, L, XL, 2XL use the large mold.

In many cases, a person who typically wears an L, needs an M in the AFX. The interior volume is OK for this, but the "container" (outer shell) is smaller...occasionally too small. Chinbar too close, not enough vertical volume, etc.

We have found that this affects size M wearers mostly, and most of our size returns are that size. Not all Ms, mind you, but more than statistically normal. Less a problem with other size, S, L, etc.

It is good that the AFX has more graphics, the quick release, was first to market, etc. cases where the wearer specs out to an AFX size M, we recommend the Fly L, and have much better success, and much fewer returns.

Some feel that the two helmets fit the same. We are respectful of everyone's opinions, but after dealing with these two helmets in some detail, I am very, very confident they fit large.

All that said, vanseagal....I do not know the warranty of the Fly...BUT....I would choose based on fit, maybe on other features, not on warranty. The AFX warranty is great, yet I would not wear ANY helmet that long. Frankly, I do not know what the liner would be like at that point anyway.

Hope that helps.


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