System Jiu-Jitsu
About
System Jiu-Jitsu in Boise offers comprehensive training in MMA and Brazilian Jiu-Jitsu under a team of highly credentialed black belt instructors. The coaching staff includes owners and head coaches Jacen Flynn, a first-generation black belt under Craig Kukuk with a professional MMA record, and Nick Kugelman, along with coaches Matt Cantwell, Matt Lane, and William Chain, all bringing deep lineage and competition experience. The gym provides a shop for training gear and essentials, creating a complete training environment for practitioners of all levels.
reviewsWhat Members Say
Members consistently describe System Jiu-Jitsu as the best gym in the Treasure Valley, praising the world-class instruction from coaches like Jacen and Nick. Reviewers highlight the passionate, knowledgeable teaching that fosters genuine growth in technique and mindset, with excellent individualized feedback during situational sparring. Beginners appreciate how welcoming and comfortable the environment feels, while experienced practitioners value the no-nonsense approach and supportive community. Specific praise focuses on Jacen's exceptional instruction that inspires students to think and improve beyond just going through the motions.
rate_reviewGoogle Reviews (5)
Alex Melo
4 months ago
Hands down the best BJJ school I’ve been to. This place fosters true growth in technique and mindset. Lots of great situational sparring with individualized feedback from the coaches. Everyone is friendly and willing to help others become better. Up-front no bs pricing. Can’t ask for more!
Jackson Zrubek
5 months ago
I've trained Jiu Jitsu consistently 2-3 days a week for 4.5 years now. My BJJ Journey began at the ORIGIN USA HQ in Maine. After a Year of rolling with those savages up in the woods I moved to Sacramento and began training at Carlson Gracie Sacramento where I received my Blue Belt. I had previously always preferred training in the Gi. Fast forward to present day, I have now been at System for one year. This gym is undoubtedly the best gym in the Treasure Valley. The instruction from Nick and Jacen is Tier 1.
Anthony DeHerrera
3 months ago
“I had the chance to visit System recently and was blown away. Jacen is an exceptional instructor — passionate, knowledgeable, and genuinely invested in helping the class not just train, but truly grow. He inspires you to think, improve, and push beyond just going through the motions. The facility is top-notch, and the instruction is world-class. Highly recommend to anyone serious about jiu jitsu!”
Jace Tyree
3 months ago
Everyone was super respectful and helped me understand the basics. They know how daunting it can be entering a new gym and they make you feel welcome and comfortable! Great knowledgeable group of guys would come back!
Carson Winter
3 months ago
It was my first time doing Jiu Jitsu, and I felt as if the coaches and the environment made it easy to learn the ropes. No complications, nothing confusing, just a great Jiu Jitsu experience.
fitness_centerAmenities
Contact
735 N Ralstin St, Meridian, ID 83642, USA
scheduleHours
Monday: 5:00 – 6:00 AM, 6:30 – 8:00 PM
Tuesday: 5:00 – 6:30 AM, 6:30 – 8:00 PM
Wednesday: 5:00 – 6:30 AM, 6:30 – 8:00 PM
Thursday: 5:00 – 6:30 AM, 6:30 – 8:00 PM
Friday: 5:00 – 6:30 AM, 6:30 – 8:00 PM
Saturday: 8:00 – 10:00 AM
Sunday: Closed
groupCoaches & Instructors
Matt Cantwell
Coach
Black Belt (under Jacen Flynn, awarded 2025), ADCC Trials semifinalist
High-level competitor in gi and no-gi across multiple rule sets. Brings pressure, pace, and precision to coaching.
Nick Kugelman
Head Coach / Owner
Black Belt (under Jacen Flynn, 2015)
Head coach at System. Started training in 2004. Coaching philosophy centers on pressure, fundamentals, and building tough, capable humans.
Matt Lane
Coach
Black Belt (awarded 2023)
Training with Jacen and Nick since 2012. Premier leg locker in the Pacific Northwest. Teaches high-level competition classes.
William Chain
Coach
Black Belt (under Jacen Flynn), Brown belt under Richie Martinez
Navy veteran. Began training in 2020. Joined System coaching team in 2024. Competes and studies combat sports.
Jacen Flynn
Head Coach / Owner
Black Belt (first black belt under Craig Kukuk, 2006), 10-3 professional MMA record
Head coach at System. Trained since 1996. MMA wins over Dean Lister and Denis Kang. Coaches with direct, technical focus on pressure and timing.