Most drag tracks will accept a Snell M-rated helmet. Heck - Atco doesn't even check to see if it's DOT approved (Bad example, I know)
The basic way it was explained to me is that Snell M-Rated helmets are designed to protect against impact from the ground, and the SA-Rated helmets were designed to protect against impact against things inside a car like the steering wheel / roll bar(cage) / etc.
Feel free to correct me if that's not right....
- Justin
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1999 Camry - Beigemobile DD
2002 Suburban - Wife's DD
2004 Grand Cherokee - Not running / Project / Selling?
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