Originally Posted by GY3
Originally Posted by 493_DART
What is the current rule for 2021 ? M2015 and newer ?


"The NHRA rule book states that helmets with a 2015 certification don't expire until January 1st of 2027. 2020 certified helmets will expire 2032."


A Snell 2010 is legal to the end of this year.


If the results don't match the theory, change the theory.