Originally Posted by shawnp
Originally Posted by hammertime
I sent a messege to price a SFI diaper and he tried to explain that I did not need one in any class super class or not, I sure hope he isnt telling others this.
All .. Super Classes 8.90 9.90 10.90 and Top Dragster/ Top Sportsman classes do need a SFI diaper, and on top of that any advanced ET cars running faster then 7.49 1/4 & 4.49 1/8th does need a SFI diaper also...

David,
That is not correct. They only require an NHRA APPROVED diaper. The SFI is not rquired until you for TA/D or better. The only place that I know requires the SFI approved diaper for 9.99 and faster is Norwalk for Super Pro and Comp.
Shawn one of is getting bad info from NHRA then, SFI is required for all super classes, td classes in both NHRA and IHRA . I have a non sfi diaper that used to be good to use and I called to make sure it was and got a no go.