We have several different configurations of door and tubing connectors. The connectors themselves are NHRA approved and have passed tech with several road racing organizations. Where you install them and how is the deciding factor when it comes to any specific class legality. We did lab testing and the tubing actually sheared before the connection was broken.
Click For Side Bar Clevis Sets.
Also, we just started offering our Gemini Connector as a separate part. This makes it so any vertical tube can be disconnected.
Click Here For 1-5/8" Gemini Connectors.
There are some special configurations that we came up with for the Exact-Fit roll bars and cages.
CLICK HERE for the PT cage and bar section. Scroll down a little for the connectors. The Camaro we're taking to SEMA this year will have removable door bars on the roll bar. Here's a pic of JUST the hardware for the door bar, SKU # 7045.
You can see both types of connections on the Camaro clip below.