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Originally Posted by insite
those are good prices. make sure you get a Snell SA2005 rated helmet. most AutoX and nearly all DE will not allow M rated (FYI, the difference is that the SA rated helmets are fireproof).
also check out discoveryparts.com; their prices are also very good and they are a serious PCA sponsor.
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Hi,
There are other differences between 'M' and 'SA'/'K' (Kart) Snell Foundation rated Helmets.
In addition to not being subjected to Flammability Testing, 'M' (Motorcycle) rated Helmets are only tested for a single impact, after which the Helmet is considered compromised (whether it actually is or not - it is not subjected to, or need pass, multiple impact testing). Also, 'M' Rated Helmets are allowed a broader Field of View (DOT required) (Broader
FOV generally equals less protection).
The 'SA'/'K' rated Helmets are tested for multiple impacts and must retain their intergrity through these to gain approval. In addition, these Helmets are not allowed as broad an FOV as the 'M' rated ones. Then, as mentioned, they must also pass Flammability Testing.
But, due to the natural degredation of the materials used and the stresses of common use, every Helmet, whether 'M' or 'SA'/'K' Rated should be replaced every
5 years, regardless of how often they may or may not have been used.
For more info., see:
http://www.smf.org/standards/2005/m2005/m2005_final.html
http://www.smf.org/standards/2005/sak2005/sa_k2005_final.html
Hope this helps...
Happy Motoring!... Jim'99