**Snell Approved Racing Helmet's - SA2010 vs M2010**
don't ask here, ask the sanctioning body with whom you will race.
HELMET (Feb. 4, 2013)
For all 10.00 to 13.99 closed-bodied cars, either an open-face or a
full-face Snell M2005, M2010, K2005, SA2000, SA2005, SA2010,
SFI 31.1A, 31.1/2005, 31.2A, 41.1A, 41.1/2005, or 41.2A helmet
with or without a shield is mandatory.
Rule book does not say how much you have to spend...only the helmet needs to meet those specs...