im 90% sure its 150 psi but the burst is like 3-400 psi i had one on my nissan for 3 years and had the psi up to 300 a few times when i forgot to turn off my edc so you can run 200 and be golden
It should have a 150psi recommended pressure if it is DOT approved and a bust pressure of at least 500 psi if not 600 or more. But be sure to do your homework before hooking it up.