Interlocking tubing clamps. NHRA legal?

I know the pin style removable crossbar for a roll cage main hoop isn't nhra legal, but was wondring if the more rigid interlocking tube clamps were legal. I'm thinking they're not, but just wanted to make sure. Thanks

Not too many people on here would know the current NHRA rulebook in depth. Probably the Yellowbullet forum would get you much more immediate responses on things drag racing.

i would say NO there is no mention of it in the rule book that i have ever see. and since it is the attachment point for the harness i would assume no. you can always call the local div tech director for confirmation.

Last time I read the rules, no it is not allowed. I have hidden them under padding and never been caught though, depends on your track and how quick you plan to go.