Jiu-Jitsu or Brazilian Jiu-Jitsu (BJJ), is a ground fighting self-defense martial art which teaches leverage, chokes, and joint locks to defeat an opposing person.


Jiu-Jitsu has been around for hundreds of years, stemming from Kodokan Judo, and was created by the Japanese to be used by the samurai. It was brought to Brazil by Mitsuyo Maeda around the early 1900s and taught to only a select few. Carlos Gracie was one of Maeda’s students. He shared his knowledge with his brothers and together they dedicated their life studying, creating, and mastering the techniques of the art. The Gracie brothers created a family dynasty and they and their children proudly shared Jiu-Jitsu with the world!


Our main focus at Cross Collar Academy is on self-defense and sport Jiu-Jitsu.

Sport Jiu-Jitsu, is where two competitors engage in a grappling match, with or without the Gi (Kimono). The goal is to submit your opponent by making them tap out. Sport Jiu-Jitsu can also be won by points using takedowns, sweeps, and guard passes in a competition setting.


Bio: Justin DuMontier started training BJJ in February of 2009 and currently holds the rank of brown belt, under Professor Jim Collins. Justin has been a fan of Mixed Martial Arts for a number of years but never had any ambition to train due to the fact he was a heavy smoker. Finally able to break the habit and needing something to keep his mind occupied, his cousin informed him of Jiu-Jitsu classes being held in Arlee, MT. So, he decided to go check it out, and the rest is history.


I hope you enjoy and love Jiu-Jitsu as much as I do!

Remember, Jiu-Jitsu is a life long journey and consistency is key!!!


-Justin DuMontier


Coach Justin DuMontier