Originally Posted By RylisPro
Yes on the back of 4119 or 9119 seats there is an air duct to hook up a portable fan (or an expensive portable AC unit) to cool down the driver. It is simply a hole that goes through the seat.
Here is the rear of a 9119 carbon/kevlar seat

You can also see the integrated back mount. When tied to the roll cage, the seat is so stiff that you can shake the entire car with it.



I assume this is in a road race car. A drag seat would be useless (and dangerous) for you. Different applications will require different seating solutions. A drag car with a roll bar will not use the same set up as a 25.5 or 25.1 chassis. Street car that will be driven miles? Something completely different.

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