Brazilian Jiu-Jitsu · Boxing · Private Lessons
Adult & kids Brazilian Jiu-Jitsu, boxing, and private lessons at our Appleton gym. Programs start at $89/month — and your first class is free.
Class Times
Day and evening classes — jiu-jitsu, boxing, and youth programs.
Classes & Training
Compete, get in shape, learn self-defense — or all three.
Brazilian Jiu-Jitsu focuses on grappling and ground fighting — using technique and leverage so a smaller person can control a bigger, stronger opponent. We train for both self-defense and sport. Most classes are taught by 1st Degree BJJ Black Belt William Krieg, and all levels are welcome, from first-timers to experienced grapplers. A gi is required after your free trial class (sold at the gym).
Try a free class
A fun way for boys and girls to reach fitness goals while building focus, self-discipline, and social skills they'll carry for life. Classes are structured to challenge kids, with strong positive reinforcement when goals are reached. No equipment needed for the free trial class — a gi is required once they continue (sold at the gym).
Try a free class
Lace up your gloves for an invigorating workout combining cardio, strength training, and the art of boxing. Classes mix conditioning drills, technical training, and controlled sparring with headgear and gloves — all skill levels welcome, beginners always. Students will want gloves, hand wraps, and a mouthguard once they continue.
Try a free classMeet the Team
We are a group of dedicated martial artists based in Appleton, WI — proudly affiliated with Team Vaghi and led by 1st Degree Brazilian Jiu-Jitsu Black Belt William Krieg, who has trained since 1997 and taught since 2000.
Whether your goal is to compete in MMA or BJJ, learn realistic self-defense, or find a fun new way to get in shape, our coaches can help you get there. Classes run day and evening under experienced black belts and qualified assistant instructors — our staff is among the most experienced you'll find in Wisconsin.
All of our coaches teach and compete purely to share their knowledge and the martial arts lifestyle. Individual programs start at just $89/month, with discounts for families and students in multiple programs.
— Team Flashback
Your first class is free — no equipment, no obligation. Come see what Team Flashback is all about.
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