ProfessorDarienCobon.
Trained by legends. Built to teach.
Momentum · Reno, NVFour disciplines.
One teacher.
Professor Darien Cobon teaches the way he trains: across the ground, the stand-up and the moments before a fight ever starts.
Rickson Gracie Jiu Jitsu
Professor of Rickson Gracie Jiu Jitsu. Black belt under Chris Haueter and Chris “Bones” Burns.
Tae Kwon Do
Third-degree black belt.
Muay Thai
Kru — a Muay Thai teacher.
Personal protection
NRA and USCCA certified pistol, carbine and personal protection instructor.
With Master Rickson GracieTrained by
legends.
Darien earned his jiu-jitsu black belt under Chris Haueter — one of the “Dirty Dozen,” the first Americans ever awarded a Brazilian jiu-jitsu black belt — and Chris “Bones” Burns.
He continues to train as a private student of Master Rickson Gracie, and teaches as a Professor of Rickson Gracie Jiu Jitsu: leverage, connection and base before strength.
Haueter · Burns · Rickson Gracie
Momentum Martial Arts · RenoBuilt to
teach.
At Momentum Martial Arts in Reno, Nevada, Darien teaches Gracie Jiu Jitsu and coaches the Momentum Martial Arts Competition Team — proudly sponsored by Submission Coffee.
Class 01 shows how he teaches: a base game to feel the problem, one clear principle that solves it, drilling until it sticks, then live rounds to prove it. That night the principle was simple — control the joint above, and use counter pressure.
From the mat,
not a script.
Lines from Class 01 at Momentum Martial Arts, October 14, 2026.
“The joint above is the number one thing that will help you finish submissions.”
Class 01 · Control the joint above“I try to maintain my own base and structure and let him hit a concrete wall that is me.”
Against a stronger partner“Increase your knowledge of breaking down the human body in a fight.”
On drilling with new partners“Joint above, counter pressure, and I think that will help you forever.”
The two things
Self-defense demo · Class 01Harder
to kill.
Jiu jitsu is where Darien starts, not where he stops. As an NRA and USCCA certified pistol, carbine and personal protection instructor, he teaches the whole picture of staying safe, and shares that side of his work as Momentum Tactical.
That is the idea behind Harder To Kill, his online community with Submission Coffee: jiu jitsu, firearms, striking and knife control, taught by one instructor and built to work together.
Two ways
onto his mat.
Harder To Kill
Full-length classes filmed at Momentum, starting with Class 01: Control the Joint Above. New classes added as they're filmed. $249 a year.
Momentum Martial Arts
Gracie Jiu Jitsu, MMA, Muay Thai, boxing and functional fitness. 920 Matley Ln #5, Reno, NV 89502.
