Metro Boston's Premiere BJJ, BOXING & MMA
Train. Fight. Win!
Brazilian Jiu Jitsu
An Art. A Passion. A Lifestyle.


617 Fight Sports is a family. Every member of our gym works together to create highly skilled fighters with humble hearts and peaceful minds—on and off the mat. We are intense, but respectful. Competitive, yet welcoming.  We transform the mind and body into strength and reasoning.

It never gets easier—you just get better!

GI Jiu Jitsu 

Your uniform is a weapon. 

The GI (pronounced: gee) is the uniform used in Brazilian jiu-jitsu and all students learn to use it as a weapon. It was adapted from Japanese martial arts and is typically composed of a heavy cotton jacket and reinforced trousers. A cloth belt is worn over the gi, to keep the jacket closed, and to signify the skill/rank of the fighter. We recommend all BBJ students incorporate wearing a GI into their formal training.

No-GI Jiu Jitsu Boston

Street fighting without the GI. 

Like anything in life, it is good to be prepared and have diversified skills. While learning and practicing GI jiu-jitsu is essential to understand the roll that the GI plays. However, it is not always practical or available, as in street fighting, to wear a GI. Our students have the opportunity to learn Gi and No-Gi jiu-jitsu for developing skills in all areas.

Kids Jiu Jitsu

Respect for self and others.

Every child can benefit from studying Brazilian Jiu-jitsu . We start at age four and teach discipline, focus, and goal-setting skills while incorporating valuable self-defense.  The emphasis on personal achievement builds confidence while the belt and stripe requirements provide a clear path forward at each level of the training process– there are no “benchwarmers” in martial arts classes. Our students learn self- defense and life lessons while gaining self-confidenceself-disciplineself-esteem, self-respect and self- empowerment. They learn how to take on whatever life throws at them with confidence and grace. Our students learn how to respect their parents, teachers and elders.

Women’s Jiu Jitsu 

Size doesn’t matter. 

Historically, Brazilian Jiu-jitsu was adapted from traditional Japanese Jiu-jitsu to accommodate smaller fighters.  Agility, speed and intelligence are key factors. However, we understand that it might initially be more comfortable for female students who are new to Brazilian Jiu-jitsu to practice with other women. This is exactly why we offer Women’s Jiu Jitsu classes. You will learn exactly what the pros are taught: Conditioning, technique, and lots of bag and mitt work are the mainstays of our classes.

It has been our experience that at some point, the women join the men and may the smarter opponent win!

It’s never about one.

Teamwork and Family are the keys to the culture at 617 Fight Sports. Even though each student trains at their own level and pace, we take care of each other. You will be welcomed from the very first day and all of your accomplishments are OUR accomplishments—from your very first belt to winning a competition—we will be there. More experienced students help and new students and we all have each other’s back. Let us be your Jiu Jitsu Boston family. You never go into a fight alone.