The most low profile helmet I've come across so far is going to be the arai gp6/gp6s. In comparison to most bell helmets it's a fraction of the size. The only other way I recommend is to get the seat as low as possible.

In all honesty the helmet will not make a big enough difference to safely clear a cage though unless you have some massive obsolete design or the wrong size helmet. You very well may need to look into selling those two frames and picking up a larger frame car such as a boss chassis or eagle chassis


I am a dealer for arai so if there is anything I can help you with in that regard feel free to shoot me a message.

Here is a comparison between a bell dominator 2

Sitting on a table doesn't show the difference this guy's is asking about. As the helmet sits on top of your head, it is the top pad, the inner bead liner, and shell thickness that will determine the height of the top of your helmet. And to pass the Snell standard, all of the helmet brands are close to the same. Your comparison only shows the difference in the trim line at the bottom. We have always built the Bell line to come down further below the chin in the front, and a little more in the back. For dirt racers it tends to help with dust coming up from the bottom.