Gilbertsville's Home for Brazilian Jiu-Jitsu
World-class Gi, No-Gi, judo and self-defense — taught by black belts who care as much about how you leave the mats as how you train on them.
Our Programs
One standard of instruction, built around your goals and experience level. Whether it's your first class or your next belt, there's a place for you on our mats.
The "Gentle Art" of Brazilian Jiu-Jitsu blended with judo, wrestling and practical self-defense. Built on trust, integrity and team, every class is designed to help you crush your goals — whether that's a great workout, stress relief, competition training or real-world self-defense.
Structure meets high-energy for ages 6–14, split into two age-tiered classes. We build discipline, confidence and practical self-defense — turning martial-arts concepts into life skills that help kids focus at school, handle bullying and thrive alongside their peers.
New Class
Build real-world fight fitness in this high-intensity, fast-paced class. Combining the sharp hand speed of boxing, the powerful kicks of kickboxing and tactical fight strategy, it sharpens your self-defense while pushing your cardio to the limit — a challenging, ego-free workout that builds genuine confidence and functional power.
Why Sentry Jiu-Jitsu
Welcome to our academy, where community, camaraderie and a team-first mentality form our foundation. We believe Jiu-Jitsu is a personal journey — whether you want to master realistic self-defense, get in peak shape or test your skills. With a wide variety of challenging classes tailored for all levels, we provide an environment designed to push your limits. Above all, we pride ourselves on a strictly no-ego, high-respect culture where every student is supported and empowered. Come join Team Sentry and find your purpose on the mats.
Our team is built on trust, integrity and family. Members from every walk of life train side by side and support each other on and off the mats. Ego stays at the door.
Learn from a 2nd-degree BJJ black belt and a coaching team with decades of combined experience and active competition history. Technical precision meets real-world detail.
A no-nonsense self-preservation system grafting Brazilian Jiu-Jitsu, Judo and self-defense into techniques that work — immediately useful the moment you step off the mats.
Real Results
Whether you're stepping on the mats for the first time or chasing your next belt, Sentry gives you the coaching, curriculum and community to reach your goals — and become the best version of yourself.
New Student Special
Step on the mats for a full week and train as much as you like — no experience required.
Limited to new students · or call 610.915.8116
What Members Say
Real stories from the people who train at Sentry — adults, parents, competitors and first-timers.
As a police officer, the self-defense techniques I've learned here WORK in the real world. Beginning my martial arts journey with this group has been one of the most rewarding things I've ever done.
Joining the academy was one of the greatest choices I have ever made. I was welcomed in with open arms and given the opportunity to learn and grow while stepping out of my comfort zone.
I was worried being over 50 and starting Jiu-Jitsu. Everyone at Sentry is welcoming and the students work with you to grasp the concepts. Professor Dave breaks down everything from the novice to the experienced.
Verified reviews from our Google profile.
Class Times
Kids, juniors and adults train six days a week, organized by focus so every level — from day one to competition — has a place on the mats.
Inside the Academy
A clean, welcoming, fully-matted floor in the heart of Gilbertsville — built for serious training and total beginners alike.
Plan Your First Visit
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Room to drill, roll and move on high-quality competition mats.
A friendly, well-kept space where every member feels at home.
Start from zero with coaches who guide you through every step.
Locally run and rooted in the Gilbertsville community.
Come see the mats for yourself — your first week is on us.
Find Us
Come visit the academy, meet the team, and take your first step onto the mats. Whether you're brand new or returning to training, we'll help you get started.